Add validation of non referenced file in package

Add the validation specified in SOL004, that all files in the package
should be listed in the Manifest file.
Fix Validator related Test class, adapting to the new validation.
Create a manifest builder to help the tests.
Fix minor typos.
Update .gitignore to remove ajcore files.

Change-Id: Ib9a99bf3d7905349e0ec8fef8fd960028bb83f8d
Issue-ID: SDC-2412
Signed-off-by: andre.schmid <andre.schmid@est.tech>

6 files changed, 817 insertions, 177 deletions

diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilder.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilder.java
new file mode 100644
index 0000000000..c7fd225c76
--- /dev/null
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilder.java
@@ -0,0 +1,166 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.validation;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.TreeMap;
+import org.openecomp.sdc.tosca.csar.CSARConstants;
+
+/**
+ * Builds SOL0004 manifest file as a String.
+ */
+public class ManifestBuilder {
+
+    private final Map<String, Map<String, String>> sourceWithPropertiesMap = new TreeMap<>();
+    private final Map<String, List<String>> nonManoArtifactMap = new TreeMap<>();
+    private final Map<String, String> metadataMap = new TreeMap<>();
+    private static final String PROPERTY_FORMAT = "%s: %s%n";
+    private static final String SECTION_FORMAT = "%s:%n";
+
+    /**
+     * Adds a metadata property.
+     *
+     * @param metadataProperty      the property name
+     * @param value                 the property value
+     * @return
+     *  a reference to this object.
+     */
+    public ManifestBuilder withMetaData(final String metadataProperty, final String value) {
+        metadataMap.put(metadataProperty, value);
+        return this;
+    }
+
+    /**
+     * Adds a manifest source path.
+     *
+     * @param sourcePath    The source path
+     * @return
+     *  a reference to this object.
+     */
+    public ManifestBuilder withSource(final String sourcePath) {
+        sourceWithPropertiesMap.put(sourcePath, null);
+        return this;
+    }
+
+    /**
+     * Adds a manifest source path with the source sign.
+     *
+     * @param sourcePath    The source path
+     * @param hashAlgorithm     The hash algorithm
+     * @param hash          The hash representing the sign
+     * @return
+     *  a reference to this object.
+     */
+    public ManifestBuilder withSignedSource(final String sourcePath, final String hashAlgorithm, final String hash) {
+        TreeMap<String, String> sourcePropertiesMap = new TreeMap<>();
+        sourcePropertiesMap.put(CSARConstants.ALGORITHM_MF_ATTRIBUTE, hashAlgorithm);
+        sourcePropertiesMap.put(CSARConstants.HASH_MF_ATTRIBUTE, hash);
+        sourceWithPropertiesMap.put(sourcePath, sourcePropertiesMap);
+        return this;
+    }
+
+    /**
+     * Adds a non mano artifact.
+     *
+     * @param artifactType  the artifact type
+     * @param sourcePath    the artifact source path
+     * @return
+     *  a reference to this object.
+     */
+    public ManifestBuilder withNonManoArtifact(final String artifactType, final String sourcePath) {
+        nonManoArtifactMap.putIfAbsent(artifactType, new ArrayList<>());
+        nonManoArtifactMap.get(artifactType).add(sourcePath);
+        return this;
+    }
+
+
+    /**
+     * Builds the String representing the manifest file.
+     * @return
+     *  The manifest file as String
+     */
+    public String build() {
+        final StringBuilder stringBuilder = new StringBuilder();
+
+        if (!metadataMap.isEmpty()) {
+            stringBuilder.append(buildMetadata());
+        }
+
+        if (!sourceWithPropertiesMap.isEmpty()) {
+            stringBuilder.append(buildSource());
+        }
+
+        if (!nonManoArtifactMap.isEmpty()) {
+            stringBuilder.append(buildNonManoArtifact());
+        }
+
+        return stringBuilder.toString();
+    }
+
+    private String buildMetadata() {
+        final StringBuilder stringBuilder = new StringBuilder();
+        stringBuilder.append(String.format(SECTION_FORMAT, CSARConstants.METADATA_MF_ATTRIBUTE));
+        for (Entry<String, String> metadataAndValue : metadataMap.entrySet()) {
+            stringBuilder.append("\t");
+            stringBuilder.append(String.format(PROPERTY_FORMAT, metadataAndValue.getKey(), metadataAndValue.getValue()));
+        }
+        stringBuilder.append("\n");
+        return stringBuilder.toString();
+    }
+
+    private String buildSource() {
+        final StringBuilder stringBuilder = new StringBuilder();
+        for (final Entry<String, Map<String, String>> signedSourceMap : sourceWithPropertiesMap.entrySet()) {
+            stringBuilder.append(String.format(PROPERTY_FORMAT, CSARConstants.SOURCE_MF_ATTRIBUTE, signedSourceMap.getKey()));
+            final Map<String, String> propertiesMap = signedSourceMap.getValue();
+            if (propertiesMap != null && !propertiesMap.isEmpty()) {
+                final String algorithm = propertiesMap.get(CSARConstants.ALGORITHM_MF_ATTRIBUTE);
+                if (algorithm != null) {
+                    stringBuilder.append(String.format(PROPERTY_FORMAT, CSARConstants.ALGORITHM_MF_ATTRIBUTE, algorithm));
+                }
+
+                final String hash = propertiesMap.get(CSARConstants.HASH_MF_ATTRIBUTE);
+                if (hash != null) {
+                    stringBuilder.append(String.format(PROPERTY_FORMAT, CSARConstants.HASH_MF_ATTRIBUTE, hash));
+                }
+            }
+        }
+        stringBuilder.append("\n");
+        return stringBuilder.toString();
+    }
+
+    private String buildNonManoArtifact() {
+        final StringBuilder stringBuilder = new StringBuilder();
+        stringBuilder.append(String.format(SECTION_FORMAT, CSARConstants.NON_MANO_MF_ATTRIBUTE));
+        for (Entry<String, List<String>> artifactTypeAndSourcesEntry : nonManoArtifactMap.entrySet()) {
+            stringBuilder.append("\t");
+            stringBuilder.append(String.format(SECTION_FORMAT, artifactTypeAndSourcesEntry.getKey()));
+            for (String source : artifactTypeAndSourcesEntry.getValue()) {
+                stringBuilder.append("\t\t");
+                stringBuilder.append(String.format(PROPERTY_FORMAT, CSARConstants.SOURCE_MF_ATTRIBUTE, source));
+            }
+        }
+        return stringBuilder.toString();
+    }
+
+}
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidator.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidator.java
index 893fb7032d..d41d39cf66 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidator.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidator.java
@@ -20,6 +20,7 @@
 
 package org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.validation;
 
+import java.util.Collection;
 import org.openecomp.core.converter.ServiceTemplateReaderService;
 import org.openecomp.core.impl.services.ServiceTemplateReaderServiceImpl;
 import org.openecomp.core.utilities.file.FileContentHandler;
@@ -282,8 +283,8 @@ class SOL004MetaDirectoryValidator implements Validator{
     }
 
     private void validateManifestFile(FileContentHandler contentHandler, String filePath){
-        final Set<String> exitingFiles = contentHandler.getFileList();
-        if(verifyFileExists(exitingFiles, filePath)) {
+        final Set<String> existingFiles = contentHandler.getFileList();
+        if(verifyFileExists(existingFiles, filePath)) {
             Manifest onboardingManifest = new SOL004ManifestOnboarding();
             onboardingManifest.parse(contentHandler.getFileContent(filePath));
             if(onboardingManifest.isValid()){
@@ -293,7 +294,7 @@ class SOL004MetaDirectoryValidator implements Validator{
                    reportError(ErrorLevel.ERROR, e.getMessage());
                    LOGGER.error(e.getMessage(), e);
                 }
-                verifySourcesExists(exitingFiles, onboardingManifest);
+                verifyManifestSources(existingFiles, onboardingManifest);
             }else{
                 List<String> manifestErrors = onboardingManifest.getErrors();
                 for(String error: manifestErrors){
@@ -345,13 +346,42 @@ class SOL004MetaDirectoryValidator implements Validator{
         }
     }
 
-    private void verifySourcesExists(Set<String> exitingFiles, Manifest onboardingManifest) {
-        List<String> sources = filterSources(onboardingManifest.getSources());
-        Map<String, List<String>> nonManoArtifacts = onboardingManifest.getNonManoSources();
-        verifyFilesExist(exitingFiles, sources, MANIFEST_SOURCE);
-        for (Map.Entry entry : nonManoArtifacts.entrySet()) {
-            verifyFilesExist(exitingFiles, filterSources((List)entry.getValue()), MANIFEST_NON_MANO_SOURCE);
-        }
+    /**
+     * Checks if all manifest sources exists within the package and if all package files are being referred.
+     *
+     * @param packageFiles          The package file path list
+     * @param onboardingManifest    The manifest
+     */
+    private void verifyManifestSources(final Set<String> packageFiles, final Manifest onboardingManifest) {
+        final List<String> sources = filterSources(onboardingManifest.getSources());
+        verifyFilesExist(packageFiles, sources, MANIFEST_SOURCE);
+
+        final Map<String, List<String>> nonManoArtifacts = onboardingManifest.getNonManoSources();
+        final List<String> nonManoFiles = nonManoArtifacts.values().stream()
+            .map(this::filterSources)
+            .flatMap(Collection::stream)
+            .collect(Collectors.toList());
+        verifyFilesExist(packageFiles, nonManoFiles, MANIFEST_NON_MANO_SOURCE);
+
+        final Set<String> allReferredFiles = new HashSet<>();
+        allReferredFiles.addAll(sources);
+        allReferredFiles.addAll(nonManoFiles);
+        verifyFilesBeingReferred(allReferredFiles, packageFiles);
+    }
+
+    /**
+     * Checks if all package files are referred in manifest.
+     * Reports missing references.
+     *
+     * @param referredFileSet   the list of referred files path
+     * @param packageFileSet    the list of package file path
+     */
+    private void verifyFilesBeingReferred(final Set<String> referredFileSet, final Set<String> packageFileSet) {
+        packageFileSet.forEach(filePath -> {
+            if (!referredFileSet.contains(filePath)) {
+                reportError(ErrorLevel.ERROR, String.format(Messages.MISSING_MANIFEST_REFERENCE.getErrorMessage(), filePath));
+            }
+        });
     }
 
     private List<String> filterSources(List<String> source){
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilderTest.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilderTest.java
new file mode 100644
index 0000000000..72f235e287
--- /dev/null
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ManifestBuilderTest.java
@@ -0,0 +1,157 @@
+/*
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Nordix Foundation
+ *  ================================================================================
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ *  ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.validation;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.hasItems;
+import static org.hamcrest.Matchers.hasSize;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.isEmptyString;
+
+import java.io.ByteArrayInputStream;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Map;
+import java.util.TreeMap;
+import org.junit.Before;
+import org.junit.Test;
+import org.openecomp.sdc.tosca.csar.CSARConstants;
+import org.openecomp.sdc.tosca.csar.Manifest;
+import org.openecomp.sdc.tosca.csar.SOL004ManifestOnboarding;
+
+public class ManifestBuilderTest {
+
+    private ManifestBuilder manifestBuilder;
+
+    @Before
+    public void setUp() {
+        manifestBuilder = new ManifestBuilder();
+    }
+
+    @Test
+    public void givenNoManifestInformation_whenBuildingManifest_thenEmptyStringShouldBeReturned() {
+        final String manifest = manifestBuilder.build();
+        assertThat("Manifest should be empty", manifest, isEmptyString());
+    }
+
+    @Test
+    public void givenSourceFiles_whenBuildingManifestWithSources_thenManifestSourceListShouldBeTheSame() {
+        final List<String> expectedSourceList = mockSourceList();
+        mockManifestMetadata();
+        expectedSourceList.forEach(source -> manifestBuilder.withSource(source));
+
+        final Manifest onboardingManifest = parseManifest();
+        final List<String> actualSourceList = onboardingManifest.getSources();
+
+        assertThat("Source list should have the same size as expected source items", actualSourceList,
+            hasSize(expectedSourceList.size()));
+        assertThat("Source list should contain all expected source items", actualSourceList,
+            hasItems(expectedSourceList.toArray(new String[0])));
+        assertThat("Source list should contain only expected sources items", expectedSourceList,
+            hasItems(actualSourceList.toArray(new String[expectedSourceList.size()])));
+    }
+
+    @Test
+    public void givenSourceFiles_whenBuildingManifestWithSignedSources_thenManifestSourceListShouldBeTheSame() {
+        final List<String> expectedSourceList = mockSourceList();
+        mockManifestMetadata();
+        expectedSourceList.forEach(sourceArtifact ->
+            manifestBuilder.withSignedSource(sourceArtifact, "anyAlgorithm", "anyHash")
+        );
+
+        final Manifest onboardingManifest = parseManifest();
+        final List<String> sources = onboardingManifest.getSources();
+
+        assertThat("Source list should have the same size as expected source items", sources,
+            hasSize(expectedSourceList.size()));
+        assertThat("Source list should contain all expected source items", sources,
+            hasItems(expectedSourceList.toArray(new String[0])));
+        assertThat("Source list should contain only expected sources items", expectedSourceList,
+            hasItems(sources.toArray(new String[expectedSourceList.size()])));
+    }
+
+    @Test
+    public void givenMetadata_whenBuildingManifestWithMetadata_thenParsedManifestMetadataShouldBeTheSame() {
+        final Map<String, String> expectedMetadataMap = new TreeMap<>();
+        expectedMetadataMap.put(CSARConstants.PNFD_NAME, "myPnf");
+        expectedMetadataMap.put(CSARConstants.PNFD_PROVIDER, "Acme");
+        expectedMetadataMap.put(CSARConstants.PNFD_ARCHIVE_VERSION, "1.0");
+        expectedMetadataMap.put(CSARConstants.PNFD_RELEASE_DATE_TIME, "2019-03-11T11:25:00+00:00");
+
+        expectedMetadataMap.forEach((key, value) -> manifestBuilder.withMetaData(key, value));
+
+        final Manifest onboardingManifest = parseManifest();
+        final Map<String, String> actualMetadataMap = onboardingManifest.getMetadata();
+
+        assertThat("Metadata should be as expected", actualMetadataMap, is(expectedMetadataMap));
+    }
+
+    @Test
+    public void givenNonManoArtifacts_whenBuildingManifestWithArtifacts_thenParsedManifestNonManoArtifactsShouldBeTheSame() {
+        mockManifestMetadata();
+        mockManifestSource();
+
+        final Map<String, List<String>> expectedNonManoArtifactMap = new TreeMap<>();
+        expectedNonManoArtifactMap.put("onap_ves_events", Arrays.asList("Files/Events/MyPnf_Pnf_v1.yaml"));
+        expectedNonManoArtifactMap.put("onap_pm_dictionary", Arrays.asList("Files/Measurements/PM_Dictionary.yaml"));
+        expectedNonManoArtifactMap.put("onap_yang_modules",
+            Arrays.asList("Files/Yang_module/mynetconf.yang", "Files/Yang_module/mynetconf2.yang"));
+        expectedNonManoArtifactMap
+            .put("onap_others", Arrays.asList("Files/Guides/user_guide.txt", "Files/Test/test.txt"));
+
+        expectedNonManoArtifactMap.forEach((key, artifacts) ->
+            artifacts.forEach(s -> manifestBuilder.withNonManoArtifact(key, s))
+        );
+
+        final Manifest onboardingManifest = parseManifest();
+        final Map<String, List<String>> actualNonManoArtifactMap = onboardingManifest.getNonManoSources();
+
+        assertThat("Non Mano Sources should be as expected", actualNonManoArtifactMap, is(expectedNonManoArtifactMap));
+    }
+
+    private Manifest parseManifest() {
+        final Manifest onboardingManifest = new SOL004ManifestOnboarding();
+        onboardingManifest.parse(new ByteArrayInputStream(manifestBuilder.build().getBytes()));
+        return onboardingManifest;
+    }
+
+    private List<String> mockSourceList() {
+        return Arrays.asList("pnf_main_descriptor.mf"
+            , "Definitions/pnf_main_descriptor.yaml"
+            , "Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml"
+            , "Definitions/etsi_nfv_sol001_vnfd_2_5_1_types.yaml"
+            , "Files/ChangeLog.txt"
+            , "Files/Events/MyPnf_Pnf_v1.yaml"
+            , "Files/Guides/user_guide.txt"
+            , "Files/Measurements/PM_Dictionary.yaml"
+            , "Files/Scripts/my_script.sh"
+            , "Files/Yang_module/mynetconf.yang"
+            , "TOSCA-Metadata/TOSCA.meta"
+        );
+    }
+
+    private void mockManifestMetadata() {
+        manifestBuilder.withMetaData(CSARConstants.PNFD_PROVIDER, "test");
+    }
+
+    private void mockManifestSource() {
+        manifestBuilder.withSource("/test.yaml");
+    }
+}
\ No newline at end of file
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidatorTest.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidatorTest.java
index 93c8b23268..17017f5b95 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidatorTest.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/SOL004MetaDirectoryValidatorTest.java
@@ -1,5 +1,6 @@
 package org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.validation;
 
+import org.apache.commons.collections.CollectionUtils;
 import org.junit.Before;
 import org.junit.Test;
 import org.openecomp.core.utilities.file.FileContentHandler;
@@ -13,8 +14,10 @@ import java.util.Collections;
 import java.util.List;
 import java.util.Map;
 
+import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
-import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
+import static org.junit.Assert.fail;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPARATOR_MF_ATTRIBUTE;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ENTRY_DEFINITIONS;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_CERTIFICATE;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_CHANGE_LOG;
@@ -22,6 +25,15 @@ import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_L
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_MANIFEST;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_TESTS;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_PATH_FILE_NAME;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.PNFD_NAME;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.PNFD_PROVIDER;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.PNFD_ARCHIVE_VERSION;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.PNFD_RELEASE_DATE_TIME;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.VNF_PRODUCT_NAME;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.VNF_PROVIDER_ID;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.VNF_PACKAGE_VERSION;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.VNF_RELEASE_DATE_TIME;
+
 import static org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration.csar.validation.TestConstants.*;
 
 public class SOL004MetaDirectoryValidatorTest {
@@ -31,400 +43,660 @@ public class SOL004MetaDirectoryValidatorTest {
     private String metaFile;
 
     @Before
-    public void setUp(){
+    public void setUp() {
         sol004MetaDirectoryValidator = new SOL004MetaDirectoryValidator();
         handler = new FileContentHandler();
         metaFile =
                 "TOSCA-Meta-File-Version: 1.0\n"+
                 "CSAR-Version: 1.1\n"+
                 "Created-by: Vendor\n"+
-                TOSCA_META_ENTRY_DEFINITIONS + SEPERATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n"+
-                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPERATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.mf\n"+
-                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPERATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text\n";
+                TOSCA_META_ENTRY_DEFINITIONS + SEPARATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n"+
+                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPARATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.mf\n"+
+                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPARATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text\n";
     }
 
     @Test
-    public void testGivenTOSCAMetaFile_whenEntryHasNoValue_thenErrorIsReturned() throws IOException{
-
-        String  metaFileWithInvalidEntry = "TOSCA-Meta-File-Version: \n" +
+    public void testGivenTOSCAMetaFile_whenEntryHasNoValue_thenErrorIsReturned() {
+        final String metaFileWithInvalidEntry = "TOSCA-Meta-File-Version: \n" +
                 "Entry-Definitions: Definitions/MainServiceTemplate.yaml";
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFileWithInvalidEntry.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(TestConstants.SAMPLE_DEFINITION_FILE_PATH));
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(TestConstants.SAMPLE_DEFINITION_FILE_PATH));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("TOSCA Meta file with no entries", errors, 1);
     }
 
     @Test
-    public void testGivenTOSCAMeta_withAllSupportedEntries_thenNoErrorsReturned() throws IOException{
+    public void testGivenTOSCAMeta_withAllSupportedEntries_thenNoErrorsReturned() {
 
-        String entryTestFilePath = "Files/Tests";
-        String entryLicenseFilePath = "Files/Licenses";
+        final String entryTestFilePath = "Files/Tests";
+        final String entryLicenseFilePath = "Files/Licenses";
 
-        List<String> folderList = new ArrayList<>();
+        final List<String> folderList = new ArrayList<>();
         folderList.add("Files/Tests/");
         folderList.add("Files/Licenses/");
 
         metaFile = metaFile +
-                TOSCA_META_ETSI_ENTRY_TESTS + SEPERATOR_MF_ATTRIBUTE + entryTestFilePath + "\n" +
-                TOSCA_META_ETSI_ENTRY_LICENSES + SEPERATOR_MF_ATTRIBUTE + entryLicenseFilePath +"\n";
+                TOSCA_META_ETSI_ENTRY_TESTS + SEPARATOR_MF_ATTRIBUTE + entryTestFilePath + "\n" +
+                TOSCA_META_ETSI_ENTRY_LICENSES + SEPARATOR_MF_ATTRIBUTE + entryLicenseFilePath +"\n";
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
         handler.addFile(entryTestFilePath, "".getBytes());
         handler.addFile(entryLicenseFilePath, "".getBytes());
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, folderList);
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder()
+            .withSource(TOSCA_META_PATH_FILE_NAME)
+            .withSource(TOSCA_DEFINITION_FILEPATH)
+            .withSource(TOSCA_CHANGELOG_FILEPATH)
+            .withSource(TOSCA_MANIFEST_FILEPATH).withSource(SAMPLE_SOURCE)
+            .withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH)
+            .withSource(entryTestFilePath)
+            .withSource(entryLicenseFilePath);
+
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, folderList);
         assertTrue(errors.size() == 0);
     }
 
     @Test
-    public void testGivenTOSCAMeta_withUnsupportedEntry_thenWarningIsReturned(){
-
+    public void testGivenTOSCAMeta_withUnsupportedEntry_thenWarningIsReturned() {
         metaFile = "Entry-Events: Definitions/events.log";
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
         assertTrue(errors.size() == 1 && errorMessages.size() == 1);
         assertTrue(errorMessages.get(0).getLevel() == ErrorLevel.ERROR);
-
     }
 
+    /**
+     * Tests if the meta file contains invalid versions in TOSCA-Meta-File-Version and CSAR-Version attributes.
+     */
     @Test
-    public void testGivenTOSCAMetaFile_withInvalidTOSCAMetaFileVersionAndCSARVersion_thenErrorIsReturned() throws IOException{
-
-        String metaFile =
+    public void testGivenTOSCAMetaFile_withInvalidTOSCAMetaFileVersionAndCSARVersion_thenErrorIsReturned() {
+        final String metaFile =
                 "TOSCA-Meta-File-Version: " + Integer.MAX_VALUE +
                 "\nCSAR-Version: " + Integer.MAX_VALUE  +
                 "\nCreated-by: Bilal Iqbal\n" +
-                TOSCA_META_ENTRY_DEFINITIONS+ SEPERATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n" +
-                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPERATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.mf\n"+
-                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPERATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text";
+                TOSCA_META_ENTRY_DEFINITIONS+ SEPARATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n" +
+                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPARATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.mf\n"+
+                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPARATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text";
+
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(TestConstants.SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(TestConstants.SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 2);
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("Invalid TOSCA-Meta-File-Version and CSAR-Version attributes", errors, 2);
     }
 
     @Test
-    public void testGivenTOSCAMetaFile_withNonExistentFileReferenced_thenErrorsReturned(){
-
+    public void testGivenTOSCAMetaFile_withNonExistentFileReferenced_thenErrorsReturned() {
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
         assertTrue(errors.size() == 1 && errorMessages.size() == 3);
     }
 
 
     @Test
-    public void testGivenDefinitionFile_whenValidImportStatementExist_thenNoErrorsReturned() throws IOException{
-
-        String definitionFileWithValidImports = "/validation.files/definition/definitionFileWithValidImports.yaml";
-
+    public void testGivenDefinitionFile_whenValidImportStatementExist_thenNoErrorsReturned() {
+        final ManifestBuilder manifestBuilder = getPnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
-        handler.addFile("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml", ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(definitionFileWithValidImports));
+        manifestBuilder.withSource(SAMPLE_SOURCE);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        handler.addFile("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml", getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml");
+
+        final String definitionFileWithValidImports = "/validation.files/definition/definitionFileWithValidImports.yaml";
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(definitionFileWithValidImports));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertTrue(errors.size() == 0);
     }
 
     @Test
-    public void testGivenDefinitionFile_whenMultipleDefinitionsImportStatementExist_thenNoErrorsReturned() throws IOException{
-
-        byte [] sampleDefinitionFile1 = ValidatorUtil.getFileResource("/validation.files/definition/sampleDefinitionFile1.yaml");
-        byte [] sampleDefinitionFile2 = ValidatorUtil.getFileResource("/validation.files/definition/sampleDefinitionFile2.yaml");
-        byte [] sampleDefinitionFile3 = ValidatorUtil.getFileResource("/validation.files/definition/sampleDefinitionFile3.yaml");
+    public void testGivenDefinitionFile_whenMultipleDefinitionsImportStatementExist_thenNoErrorsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_SOURCE);
+
+        final byte [] sampleDefinitionFile1 = getResourceBytes("/validation.files/definition/sampleDefinitionFile1.yaml");
         handler.addFile(TOSCA_DEFINITION_FILEPATH, sampleDefinitionFile1);
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        final byte [] sampleDefinitionFile2 = getResourceBytes("/validation.files/definition/sampleDefinitionFile2.yaml");
         handler.addFile("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml", sampleDefinitionFile2);
+        manifestBuilder.withSource("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml");
+
+        final byte [] sampleDefinitionFile3 = getResourceBytes("/validation.files/definition/sampleDefinitionFile3.yaml");
         handler.addFile("Definitions/etsi_nfv_sol001_pnfd_2_5_2_types.yaml", sampleDefinitionFile3);
+        manifestBuilder.withSource("Definitions/etsi_nfv_sol001_pnfd_2_5_2_types.yaml");
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertTrue(errors.size() == 0);
     }
 
     @Test
-    public void testGivenDefinitionFile_whenInvalidImportStatementExist_thenErrorIsReturned() throws IOException{
-
-        String definitionFileWithInvalidImports = "/validation.files/definition/definitionFileWithInvalidImport.yaml";
+    public void testGivenDefinitionFile_whenInvalidImportStatementExist_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(definitionFileWithInvalidImports));
+        manifestBuilder.withSource(SAMPLE_SOURCE);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        final String definitionFileWithInvalidImports = "/validation.files/definition/definitionFileWithInvalidImport.yaml";
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(definitionFileWithInvalidImports));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        String manifest = manifestBuilder.build();
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifest.getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("", errors, 1);
     }
 
+    /**
+     * Manifest referenced import file missing
+     */
     @Test
-    public void testGivenDefinitionFile_whenReferencedImportDoesNotExist_thenErrorIsReturned() throws IOException{
+    public void testGivenDefinitionFile_whenReferencedImportDoesNotExist_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_SOURCE);
+
         handler.addFile("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml", "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource("/validation.files/definition/sampleDefinitionFile2.yaml"));
+        manifestBuilder.withSource("Definitions/etsi_nfv_sol001_pnfd_2_5_1_types.yaml");
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes("/validation.files/definition/sampleDefinitionFile2.yaml"));
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("Manifest referenced import file missing", errors, 1);
     }
 
+    /**
+     * Reference with invalid YAML format.
+     */
     @Test
-    public void testGivenDefinitionFile_withInvalidYAML_thenErrorIsReturned() throws IOException{
-
-        String definitionFileWithInvalidYAML = "/validation.files/definition/invalidDefinitionFile.yaml";
+    public void testGivenDefinitionFile_withInvalidYAML_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_MANIFEST_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_SOURCE);
 
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(definitionFileWithInvalidYAML));
+        final String definitionFileWithInvalidYAML = "/validation.files/definition/invalidDefinitionFile.yaml";
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(definitionFileWithInvalidYAML));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("Reference with invalid YAML format", errors, 1);
     }
 
     @Test
-    public void testGivenManifestFile_withValidSourceAndNonManoSources_thenNoErrorIsReturned() throws IOException{
-
-        String nonManoSource = "Artifacts/Deployment/Measurements/PM_Dictionary.yaml";
+    public void testGivenManifestFile_withValidSourceAndNonManoSources_thenNoErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getPnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/validManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(SAMPLE_SOURCE, "".getBytes());
-        handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(SAMPLE_SOURCE);
+
+        handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH);
+
+        final String nonManoSource = "Artifacts/Deployment/Measurements/PM_Dictionary.yaml";
         handler.addFile(nonManoSource, "".getBytes());
+        manifestBuilder.withNonManoArtifact("onap_pm_events", nonManoSource);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertTrue(errors.size() == 0);
     }
 
+    /**
+     * Manifest with non existent source files should return error.
+     */
     @Test
-    public void testGivenManifestFile_withNonExistentSourceFile_thenErrorIsReturned() throws IOException{
-        String nonManoSource = "Artifacts/Deployment/Measurements/PM_Dictionary.yaml";
+    public void testGivenManifestFile_withNonExistentSourceFile_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getPnfManifestSampleBuilder();
+        //non existent reference
+        manifestBuilder.withSource("Artifacts/Deployment/Events/RadioNode_pnf_v1.yaml");
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/validManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH);
+
+        String nonManoSource = "Artifacts/Deployment/Measurements/PM_Dictionary.yaml";
         handler.addFile(nonManoSource, "".getBytes());
+        manifestBuilder.withNonManoArtifact("onap_pm_events", nonManoSource);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("Manifest with non existent source files", errors, 1);
     }
 
+    /**
+     * Tests the validation for a TOSCA Manifest with invalid data.
+     */
     @Test
-    public void testGivenManifestFile_withInvalidData_thenErrorIsReturned() throws IOException{
-
+    public void testGivenManifestFile_withInvalidData_thenErrorIsReturned() {
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/invalidManifest.mf"));
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, getResourceBytes("/validation.files/manifest/invalidManifest.mf"));
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
-        List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-        assertTrue(errors.size() == 1 && errorMessages.size() == 1);
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        assertExpectedErrors("TOSCA manifest with invalid data", errors, 1);
     }
 
     @Test
-    public void testGivenManifestAndDefinitionFile_withSameNames_thenNoErrorReturned() throws IOException {
+    public void testGivenManifestAndDefinitionFile_withSameNames_thenNoErrorReturned()  {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertTrue(errors.size() == 0);
     }
 
+    /**
+     * Main TOSCA definitions file and Manifest file with different name should return error.
+     */
     @Test
-    public void testGivenManifestAndMainDefinitionFile_withDifferentNames_thenErrorIsReturned() throws IOException {
+    public void testGivenManifestAndMainDefinitionFile_withDifferentNames_thenErrorIsReturned() {
         metaFile =
                 "TOSCA-Meta-File-Version: 1.0\n"+
                 "CSAR-Version: 1.1\n"+
                 "Created-by: Vendor\n"+
-                TOSCA_META_ENTRY_DEFINITIONS + SEPERATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n"+
-                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPERATOR_MF_ATTRIBUTE +"Definitions/MainServiceTemplate2.mf\n"+
-                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPERATOR_MF_ATTRIBUTE +"Artifacts/changeLog.text\n";
+                TOSCA_META_ENTRY_DEFINITIONS + SEPARATOR_MF_ATTRIBUTE + "Definitions/MainServiceTemplate.yaml\n"+
+                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPARATOR_MF_ATTRIBUTE +"Definitions/MainServiceTemplate2.mf\n"+
+                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPARATOR_MF_ATTRIBUTE +"Artifacts/changeLog.text\n";
+
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile("Definitions/MainServiceTemplate2.mf", ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH);
+
+        manifestBuilder.withSource("Definitions/MainServiceTemplate2.mf");
+        handler.addFile("Definitions/MainServiceTemplate2.mf", manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Main TOSCA definitions file and Manifest file with different name should return error",
                errors, 1);
     }
 
     @Test
-    public void testGivenManifestFile_withDifferentExtension_thenErrorIsReturned() throws IOException {
+    public void testGivenManifestFile_withDifferentExtension_thenErrorIsReturned() {
         metaFile =
                 "TOSCA-Meta-File-Version: 1.0\n"+
                 "CSAR-Version: 1.1\n"+
                 "Created-by: Vendor\n"+
                 "Entry-Definitions: Definitions/MainServiceTemplate.yaml\n"+
-                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPERATOR_MF_ATTRIBUTE +  "Definitions/MainServiceTemplate.txt\n"+
-                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPERATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text\n";
+                TOSCA_META_ETSI_ENTRY_MANIFEST + SEPARATOR_MF_ATTRIBUTE +  "Definitions/MainServiceTemplate.txt\n"+
+                TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPARATOR_MF_ATTRIBUTE + "Artifacts/changeLog.text\n";
+
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile("Definitions/MainServiceTemplate.txt", ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
         handler.addFile(SAMPLE_DEFINITION_IMPORT_FILE_PATH, "".getBytes());
+        manifestBuilder.withSource(SAMPLE_DEFINITION_IMPORT_FILE_PATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSource("Definitions/MainServiceTemplate.txt");
+        handler.addFile("Definitions/MainServiceTemplate.txt", manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest file with different extension than .mf should return error",
                 errors, 1);
     }
 
     @Test
-    public void testGivenManifestFile_withValidVnfMetadata_thenNoErrorsReturned() throws IOException{
+    public void testGivenManifestFile_withValidVnfMetadata_thenNoErrorsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder();
+        
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with valid vnf mandatory values should not return any errors", errors, 0);
     }
 
     @Test
-    public void testGivenManifestFile_withValidPnfMetadata_thenNoErrorsReturned() throws IOException {
+    public void testGivenManifestFile_withValidPnfMetadata_thenNoErrorsReturned() {
+        final ManifestBuilder manifestBuilder = getPnfManifestSampleBuilder();
+
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest2.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSignedSource(TOSCA_DEFINITION_FILEPATH
+            , "SHA-abc", "09e5a788acb180162c51679ae4c998039fa6644505db2415e35107d1ee213943");
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with valid pnf mandatory values should not return any errors", errors, 0);
     }
 
+    /**
+     * Manifest with mixed metadata should return error.
+     */
     @Test
-    public void testGivenManifestFile_withMetadataContainingMixedPnfVnfMetadata_thenErrorIsReturned() throws IOException {
+    public void testGivenManifestFile_withMetadataContainingMixedPnfVnfMetadata_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = new ManifestBuilder()
+            .withMetaData(PNFD_NAME, "RadioNode")
+            .withMetaData(VNF_PROVIDER_ID, "Bilal Iqbal")
+            .withMetaData(PNFD_ARCHIVE_VERSION, "1.0")
+            .withMetaData(VNF_RELEASE_DATE_TIME, "2019-12-14T11:25:00+00:00");
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/manifestInvalidMetadata.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with mixed metadata should return error", errors, 1);
     }
 
 
     @Test
-    public void testGivenManifestFile_withMetadataMissingPnfOrVnfMandatoryEntries_thenErrorIsReturned() throws IOException{
+    public void testGivenManifestFile_withMetadataMissingPnfOrVnfMandatoryEntries_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = new ManifestBuilder()
+            .withMetaData("invalid_product_name", "RadioNode")
+            .withMetaData("invalid_provider_id", "Bilal Iqbal")
+            .withMetaData("invalid_package_version", "1.0")
+            .withMetaData("invalid_release_date_time", "2019-12-14T11:25:00+00:00");
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/manifestInvalidMetadata2.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with missing vnf or pnf mandatory entries should return error", errors, 1);
     }
 
     @Test
-    public void testGivenManifestFile_withMetadataMissingMandatoryPnfEntries_thenErrorIsReturned() throws IOException{
+    public void testGivenManifestFile_withMetadataMissingMandatoryPnfEntries_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = new ManifestBuilder();
+
+        manifestBuilder.withMetaData(PNFD_NAME, "RadioNode");
+        manifestBuilder.withMetaData(PNFD_RELEASE_DATE_TIME, "2019-12-14T11:25:00+00:00");
+
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/manifestInvalidMetadata4.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
+
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with metadata missing pnf mandatory entries should return error", errors, 3);
 
     }
 
     @Test
-    public void testGivenManifestFile_withMetadataMissingMandatoryVnfEntries_thenErrorIsReturned() throws IOException{
+    public void testGivenManifestFile_withMetadataMissingMandatoryVnfEntries_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = new ManifestBuilder();
+
+        manifestBuilder.withMetaData(VNF_PRODUCT_NAME, "RadioNode");
+
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/manifestInvalidMetadata5.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with metadata missing vnf mandatory entries should return error", errors, 4);
 
     }
 
+    /**
+     * Manifest with more than 4 metadata entries should return error.
+     */
     @Test
-    public void testGivenManifestFile_withMetadataEntriesExceedingTheLimit_thenErrorIsReturned() throws IOException{
+    public void testGivenManifestFile_withMetadataEntriesExceedingTheLimit_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getVnfManifestSampleBuilder()
+            .withMetaData(PNFD_NAME, "RadioNode")
+            .withMetaData(PNFD_PROVIDER, "Bilal Iqbal")
+            .withMetaData(PNFD_ARCHIVE_VERSION, "1.0")
+            .withMetaData(PNFD_RELEASE_DATE_TIME, "2019-03-11T11:25:00+00:00");
+
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/manifestInvalidMetadata3.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, Collections.emptyList());
         assertExpectedErrors("Manifest with more than 4 metadata entries should return error", errors, 2);
     }
 
     @Test
-    public void testGivenManifestFile_withPnfMetadataAndVfEntries_thenErrorIsReturned() throws IOException {
-
-        List<String> folderList = new ArrayList<>();
-        folderList.add("Files/Certificates/");
+    public void testGivenManifestFile_withPnfMetadataAndVfEntries_thenErrorIsReturned() {
+        final ManifestBuilder manifestBuilder = getPnfManifestSampleBuilder();
 
         metaFile = metaFile +
-                TOSCA_META_ETSI_ENTRY_TESTS + SEPERATOR_MF_ATTRIBUTE + "Files/Tests\n" +
-                TOSCA_META_ETSI_ENTRY_LICENSES + SEPERATOR_MF_ATTRIBUTE + "Files/Licenses\n" +
-                TOSCA_META_ETSI_ENTRY_CERTIFICATE + SEPERATOR_MF_ATTRIBUTE + "Files/Certificates";
+            TOSCA_META_ETSI_ENTRY_TESTS + SEPARATOR_MF_ATTRIBUTE + "Files/Tests\n" +
+            TOSCA_META_ETSI_ENTRY_LICENSES + SEPARATOR_MF_ATTRIBUTE + "Files/Licenses\n" +
+            TOSCA_META_ETSI_ENTRY_CERTIFICATE + SEPARATOR_MF_ATTRIBUTE + "Files/Certificates";
 
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
-        handler.addFile(TOSCA_MANIFEST_FILEPATH, ValidatorUtil.getFileResource("/validation.files/manifest/sampleManifest2.mf"));
+        manifestBuilder.withSource(TOSCA_META_PATH_FILE_NAME);
+
         handler.addFile(TOSCA_CHANGELOG_FILEPATH, "".getBytes());
-        handler.addFile(TOSCA_DEFINITION_FILEPATH, ValidatorUtil.getFileResource(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_CHANGELOG_FILEPATH);
+
+        handler.addFile(TOSCA_DEFINITION_FILEPATH, getResourceBytes(SAMPLE_DEFINITION_FILE_PATH));
+        manifestBuilder.withSource(TOSCA_DEFINITION_FILEPATH);
 
-        Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, folderList);
+        manifestBuilder.withSource(TOSCA_MANIFEST_FILEPATH);
+        handler.addFile(TOSCA_MANIFEST_FILEPATH, manifestBuilder.build().getBytes(StandardCharsets.UTF_8));
+
+        final List<String> folderList = new ArrayList<>();
+        folderList.add("Files/Certificates/");
+        final Map<String, List<ErrorMessage>> errors = sol004MetaDirectoryValidator.validateContent(handler, folderList);
         assertExpectedErrors("Tosca.meta should not have entries applicable only to VF", errors, 2);
 
     }
 
-    private void assertExpectedErrors( String testCase, Map<String, List<ErrorMessage>> errors, int expectedErrors){
-        if(expectedErrors > 0){
-            List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
-            assertTrue(testCase, errorMessages.size() == expectedErrors);
-        }else{
-            assertTrue(testCase,errors.size() == expectedErrors);
+    private void assertExpectedErrors(final String testCase, final Map<String, List<ErrorMessage>> errors, final int expectedErrors){
+        final List<ErrorMessage> errorMessages = errors.get(SdcCommon.UPLOAD_FILE);
+        printErrorMessages(errorMessages);
+        if (expectedErrors > 0) {
+            assertEquals(testCase, errorMessages.size(), expectedErrors);
+        } else {
+            assertEquals(testCase, errors.size(), expectedErrors);
         }
     }
+
+    private void printErrorMessages(final List<ErrorMessage> errorMessages) {
+        if (CollectionUtils.isNotEmpty(errorMessages)) {
+            errorMessages.forEach(errorMessage -> {
+                System.out.println(String.format("%s: %s", errorMessage.getLevel(), errorMessage.getMessage()));
+            });
+        }
+    }
+
+    private byte[] getResourceBytes(final String resourcePath) {
+        try {
+            return ValidatorUtil.getFileResource(resourcePath);
+        } catch (final IOException e) {
+            fail(String.format("Could not load resource '%s'", resourcePath));
+            e.printStackTrace();
+        }
+
+        return null;
+    }
+
+    private ManifestBuilder getPnfManifestSampleBuilder() {
+        return new ManifestBuilder()
+            .withMetaData(PNFD_NAME, "myPnf")
+            .withMetaData(PNFD_PROVIDER, "ACME")
+            .withMetaData(PNFD_ARCHIVE_VERSION, "1.0")
+            .withMetaData(PNFD_RELEASE_DATE_TIME, "2019-03-11T11:25:00+00:00");
+    }
+
+    private ManifestBuilder getVnfManifestSampleBuilder() {
+        return new ManifestBuilder()
+            .withMetaData(VNF_PRODUCT_NAME, "RadioNode")
+            .withMetaData(VNF_PROVIDER_ID, "ACME")
+            .withMetaData(VNF_PACKAGE_VERSION, "1.0")
+            .withMetaData(VNF_RELEASE_DATE_TIME, "2019-03-11T11:25:00+00:00");
+    }
 }
\ No newline at end of file
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorFactoryTest.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorFactoryTest.java
index 3f42c5715c..5a43ab5e71 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorFactoryTest.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorFactoryTest.java
@@ -7,7 +7,7 @@ import java.io.IOException;
 import java.nio.charset.StandardCharsets;
 
 import static org.junit.Assert.assertEquals;
-import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPERATOR_MF_ATTRIBUTE;
+import static org.openecomp.sdc.tosca.csar.CSARConstants.SEPARATOR_MF_ATTRIBUTE;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ENTRY_DEFINITIONS;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_CHANGE_LOG;
 import static org.openecomp.sdc.tosca.csar.CSARConstants.TOSCA_META_ETSI_ENTRY_MANIFEST;
@@ -54,7 +54,7 @@ public class ValidatorFactoryTest {
     @Test
     public void testGivenNonSOL004MetaDirectoryCompliantMetaFile_thenONAPCSARValidatorIsReturned() throws IOException{
         metaFile = metaFile +
-                TOSCA_META_ENTRY_DEFINITIONS + SEPERATOR_MF_ATTRIBUTE + TOSCA_DEFINITION_FILEPATH;
+                TOSCA_META_ENTRY_DEFINITIONS + SEPARATOR_MF_ATTRIBUTE + TOSCA_DEFINITION_FILEPATH;
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
 
         assertEquals(ONAPCsarValidator.class, ValidatorFactory.getValidator(handler).getClass());
@@ -64,9 +64,9 @@ public class ValidatorFactoryTest {
     public void testGivenSOL004MetaDirectoryCompliantMetafile_thenONAPCsarValidatorIsReturned() throws IOException{
 
         metaFile = metaFile +
-                TOSCA_META_ENTRY_DEFINITIONS + SEPERATOR_MF_ATTRIBUTE + TOSCA_DEFINITION_FILEPATH + "\n"
-                + TOSCA_META_ETSI_ENTRY_MANIFEST + SEPERATOR_MF_ATTRIBUTE + TOSCA_MANIFEST_FILEPATH + "\n"
-                + TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPERATOR_MF_ATTRIBUTE + TOSCA_CHANGELOG_FILEPATH + "\n";
+                TOSCA_META_ENTRY_DEFINITIONS + SEPARATOR_MF_ATTRIBUTE + TOSCA_DEFINITION_FILEPATH + "\n"
+                + TOSCA_META_ETSI_ENTRY_MANIFEST + SEPARATOR_MF_ATTRIBUTE + TOSCA_MANIFEST_FILEPATH + "\n"
+                + TOSCA_META_ETSI_ENTRY_CHANGE_LOG + SEPARATOR_MF_ATTRIBUTE + TOSCA_CHANGELOG_FILEPATH + "\n";
         handler.addFile(TOSCA_META_PATH_FILE_NAME, metaFile.getBytes(StandardCharsets.UTF_8));
 
        assertEquals(SOL004MetaDirectoryValidator.class, ValidatorFactory.getValidator(handler).getClass());
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorUtil.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorUtil.java
index 91e3807a79..fdde36c935 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorUtil.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/test/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/csar/validation/ValidatorUtil.java
@@ -11,12 +11,27 @@ import java.io.InputStream;
 
 class ValidatorUtil {
 
-    private ValidatorUtil(){
+    private ValidatorUtil() {
 
     }
 
-    public static byte[] getFileResource(String filePath) throws IOException{
-        InputStream inputStream = ClassLoader.class.getClass().getResourceAsStream(filePath);
-        return IOUtils.toByteArray(inputStream);
+    /**
+     * Reads a file and coverts it to a byte array.
+     *
+     * @param filePath      The file path
+     * @return
+     *  The file byte array
+     * @throws IOException
+     *  When the file was not found or the input stream could not be opened
+     */
+    public static byte[] getFileResource(final String filePath) throws IOException {
+        try(final InputStream inputStream = ClassLoader.class.getResourceAsStream(filePath)) {
+            if (inputStream == null) {
+                throw new IOException(String.format("Could not find the resource on path \"%s\"", filePath));
+            }
+            return IOUtils.toByteArray(inputStream);
+        } catch (final IOException ex) {
+            throw new IOException(String.format("Could not open the input stream for resource on path \"%s\"", filePath), ex);
+        }
     }
 }