Fix Sonar Issues in apex-pdp-basic-model

Test refactoring and use of Local-Variable Type Inference

Issue-ID: POLICY-3093
Change-Id: If19c9ec96ba440a58eff679f276e4b53a26ce1ab
Signed-off-by: lapentafd <francesco.lapenta@est.tech>

10 files changed, 115 insertions, 74 deletions

diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxArtifactKey.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxArtifactKey.java
index 86c89c35e..1edbc9be9 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxArtifactKey.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxArtifactKey.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -235,7 +235,7 @@ public class AxArtifactKey extends AxKey {
         }
         final AxArtifactKey otherArtifactKey = (AxArtifactKey) otherKey;
 
-        final Compatibility compatibility = this.getCompatibility(otherArtifactKey);
+        final var compatibility = this.getCompatibility(otherArtifactKey);
 
         return !(compatibility == Compatibility.DIFFERENT || compatibility == Compatibility.MAJOR);
     }
@@ -245,14 +245,14 @@ public class AxArtifactKey extends AxKey {
      */
     @Override
     public AxValidationResult validate(final AxValidationResult result) {
-        final String nameValidationErrorMessage = Assertions.getStringParameterValidationMessage(NAME_TOKEN, name,
+        final var nameValidationErrorMessage = Assertions.getStringParameterValidationMessage(NAME_TOKEN, name,
                         NAME_REGEXP);
         if (nameValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
                             "name invalid-" + nameValidationErrorMessage));
         }
 
-        final String versionValidationErrorMessage = Assertions.getStringParameterValidationMessage(VERSION_TOKEN,
+        final var versionValidationErrorMessage = Assertions.getStringParameterValidationMessage(VERSION_TOKEN,
                         version, VERSION_REGEXP);
         if (versionValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
@@ -276,7 +276,7 @@ public class AxArtifactKey extends AxKey {
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("name=");
@@ -309,8 +309,8 @@ public class AxArtifactKey extends AxKey {
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + name.hashCode();
         result = prime * result + version.hashCode();
         return result;
@@ -360,4 +360,4 @@ public class AxArtifactKey extends AxKey {
         }
         return version.compareTo(other.version);
     }
-}
\ No newline at end of file
+}
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxConceptGetterImpl.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxConceptGetterImpl.java
index 175cded08..9c907da9c 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxConceptGetterImpl.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxConceptGetterImpl.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -62,7 +62,7 @@ public class AxConceptGetterImpl<C> implements AxConceptGetter<C> {
         Assertions.argumentNotNull(conceptKeyName, "conceptKeyName may not be null");
 
         // The very fist key that could have this name
-        final AxArtifactKey lowestArtifactKey = new AxArtifactKey(conceptKeyName, "0.0.1");
+        final var lowestArtifactKey = new AxArtifactKey(conceptKeyName, "0.0.1");
 
         // Check if we found a key for our name
         AxArtifactKey foundKey = conceptMap.ceilingKey(lowestArtifactKey);
@@ -117,7 +117,7 @@ public class AxConceptGetterImpl<C> implements AxConceptGetter<C> {
         }
 
         // The very fist key that could have this name
-        final AxArtifactKey lowestArtifactKey = new AxArtifactKey(conceptKeyName, "0.0.1");
+        final var lowestArtifactKey = new AxArtifactKey(conceptKeyName, "0.0.1");
         if (conceptKeyVersion != null) {
             lowestArtifactKey.setVersion(conceptKeyVersion);
         }
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfo.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfo.java
index 4b84a403a..7e92faddf 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfo.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfo.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -233,7 +233,7 @@ public class AxKeyInfo extends AxConcept {
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("artifactId=");
@@ -269,8 +269,8 @@ public class AxKeyInfo extends AxConcept {
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + key.hashCode();
         result = prime * result + uuid.hashCode();
         result = prime * result + description.hashCode();
@@ -336,14 +336,14 @@ public class AxKeyInfo extends AxConcept {
      * @return the uuid
      */
     public static UUID generateReproducibleUuid(final String seed) {
-        Random random = sharedRandom;
+        var random = sharedRandom;
         if (!StringUtils.isEmpty(seed)) {
             /*
              * This is not used for encryption/security, thus disabling sonar.
              */
             random = new Random(seed.hashCode());   // NOSONAR
         }
-        final byte[] array = new byte[UUID_BYTE_LENGTH_16];
+        final var array = new byte[UUID_BYTE_LENGTH_16];
         random.nextBytes(array);
         return UUID.nameUUIDFromBytes(array);
     }
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInformation.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInformation.java
index 2619d2eea..fe597bb08 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInformation.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInformation.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -151,7 +151,7 @@ public class AxKeyInformation extends AxConcept implements AxConceptGetter<AxKey
             final AxArtifactKey artifactKey = (AxArtifactKey) axKey;
 
             keyInfoMap.computeIfAbsent(artifactKey, unusedKey -> {
-                final AxKeyInfo keyInfo = new AxKeyInfo(artifactKey);
+                final var keyInfo = new AxKeyInfo(artifactKey);
                 // generate a reproducible UUID
                 keyInfo.setUuid(AxKeyInfo.generateReproducibleUuid(keyInfo.getId() + keyInfo.getDescription()));
                 return keyInfo;
@@ -290,7 +290,7 @@ public class AxKeyInformation extends AxConcept implements AxConceptGetter<AxKey
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("key=");
@@ -327,8 +327,8 @@ public class AxKeyInformation extends AxConcept implements AxConceptGetter<AxKey
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + key.hashCode();
         result = prime * result + keyInfoMap.hashCode();
         return result;
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyUse.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyUse.java
index fe786469b..eb701e5b3 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyUse.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyUse.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -139,7 +139,7 @@ public class AxKeyUse extends AxKey {
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("usedKey=");
@@ -174,8 +174,8 @@ public class AxKeyUse extends AxKey {
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + usedKey.hashCode();
         return result;
     }
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxModel.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxModel.java
index da6fb49c6..4898b6d76 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxModel.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxModel.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  *  Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -372,7 +372,7 @@ public class AxModel extends AxConcept {
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("key=");
@@ -405,8 +405,8 @@ public class AxModel extends AxConcept {
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + key.hashCode();
         result = prime * result + keyInformation.hashCode();
         return result;
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxReferenceKey.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxReferenceKey.java
index 4b9d647a9..33e26ef69 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxReferenceKey.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/concepts/AxReferenceKey.java
@@ -1,7 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -205,7 +205,7 @@ public class AxReferenceKey extends AxKey {
      *        the key ID in a format that respects the KEY_ID_REGEXP
      */
     public AxReferenceKey(final String id) {
-        final String conditionedId = Assertions.validateStringParameter("id", id, REFERENCE_KEY_ID_REGEXP);
+        final var conditionedId = Assertions.validateStringParameter("id", id, REFERENCE_KEY_ID_REGEXP);
 
         // Split on colon, if the id passes the regular expression test above
         // it'll have just three colons separating the parent name,
@@ -415,28 +415,28 @@ public class AxReferenceKey extends AxKey {
      */
     @Override
     public AxValidationResult validate(final AxValidationResult result) {
-        final String parentNameValidationErrorMessage = Assertions.getStringParameterValidationMessage(PARENT_KEY_NAME,
+        final var parentNameValidationErrorMessage = Assertions.getStringParameterValidationMessage(PARENT_KEY_NAME,
                         parentKeyName, NAME_REGEXP);
         if (parentNameValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
                             "parentKeyName invalid-" + parentNameValidationErrorMessage));
         }
 
-        final String parentKeyVersionValidationErrorMessage = Assertions
+        final var parentKeyVersionValidationErrorMessage = Assertions
                         .getStringParameterValidationMessage(PARENT_KEY_VERSION, parentKeyVersion, VERSION_REGEXP);
         if (parentKeyVersionValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
                             "parentKeyVersion invalid-" + parentKeyVersionValidationErrorMessage));
         }
 
-        final String parentLocalNameValidationErrorMessage = Assertions
+        final var parentLocalNameValidationErrorMessage = Assertions
                         .getStringParameterValidationMessage(PARENT_LOCAL_NAME, parentLocalName, LOCAL_NAME_REGEXP);
         if (parentLocalNameValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
                             "parentLocalName invalid-" + parentLocalNameValidationErrorMessage));
         }
 
-        final String localNameValidationErrorMessage = Assertions.getStringParameterValidationMessage(LOCAL_NAME,
+        final var localNameValidationErrorMessage = Assertions.getStringParameterValidationMessage(LOCAL_NAME,
                         localName, LOCAL_NAME_REGEXP);
         if (localNameValidationErrorMessage != null) {
             result.addValidationMessage(new AxValidationMessage(this, this.getClass(), ValidationResult.INVALID,
@@ -462,7 +462,7 @@ public class AxReferenceKey extends AxKey {
      */
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        final var builder = new StringBuilder();
         builder.append(this.getClass().getSimpleName());
         builder.append(":(");
         builder.append("parentKeyName=");
@@ -501,8 +501,8 @@ public class AxReferenceKey extends AxKey {
      */
     @Override
     public int hashCode() {
-        final int prime = 31;
-        int result = 1;
+        final var prime = 31;
+        var result = 1;
         result = prime * result + parentKeyName.hashCode();
         result = prime * result + parentKeyVersion.hashCode();
         result = prime * result + parentLocalName.hashCode();
diff --git a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/xml/AxReferenceKeyAdapter.java b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/xml/AxReferenceKeyAdapter.java
index d8580be06..8515f5724 100644
--- a/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/xml/AxReferenceKeyAdapter.java
+++ b/model/basic-model/src/main/java/org/onap/policy/apex/model/basicmodel/xml/AxReferenceKeyAdapter.java
@@ -1,6 +1,7 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -50,7 +51,7 @@ public class AxReferenceKeyAdapter extends XmlAdapter<String, AxReferenceKey> im
      */
     @Override
     public final AxReferenceKey unmarshal(final String key) throws Exception {
-        final AxReferenceKey axReferenceKey = new AxReferenceKey();
+        final var axReferenceKey = new AxReferenceKey();
         axReferenceKey.setLocalName(key);
         return axReferenceKey;
     }
diff --git a/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfoTest.java b/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfoTest.java
index 5a57ba3a6..b5fcea3ca 100644
--- a/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfoTest.java
+++ b/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyInfoTest.java
@@ -1,7 +1,7 @@
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019 Nordix-2020 Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,11 +33,14 @@ import org.junit.Test;
 public class AxKeyInfoTest {
 
     @Test
-    public void testAxKeyInfo() {
+    public void testNullAxKeyInfo() {
         assertNotNull(new AxKeyInfo());
         assertNotNull(new AxKeyInfo(new AxArtifactKey()));
         assertNotNull(new AxKeyInfo(new AxArtifactKey(), UUID.randomUUID(), "Key description"));
+    }
 
+    @Test
+    public void testAxKeyInfo() {
         AxKeyInfo testKeyInfo = new AxKeyInfo();
         testKeyInfo.setKey((new AxArtifactKey("PN", "0.0.1")));
         assertEquals("PN:0.0.1", testKeyInfo.getKey().getId());
@@ -78,6 +81,12 @@ public class AxKeyInfoTest {
         assertEquals(0, testKeyInfo.compareTo(new AxKeyInfo(key, uuid, "Key Description")));
 
         assertNotNull(testKeyInfo.getKeys());
+    }
+
+    @Test
+    public void testAxKeyValidation() {
+        AxKeyInfo testKeyInfo = new AxKeyInfo();
+        testKeyInfo.setKey((new AxArtifactKey("PN", "0.0.1")));
 
         AxValidationResult result = new AxValidationResult();
         result = testKeyInfo.validate(result);
diff --git a/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyTest.java b/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyTest.java
index 1e8e7f5af..010f4b8a3 100644
--- a/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyTest.java
+++ b/model/basic-model/src/test/java/org/onap/policy/apex/model/basicmodel/concepts/AxKeyTest.java
@@ -1,7 +1,7 @@
 /*
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2016-2018 Ericsson. All rights reserved.
- *  Modifications Copyright (C) 2019-2020 Nordix Foundation.
+ *  Modifications Copyright (C) 2019-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,41 +29,81 @@ import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertTrue;
 
 import java.lang.reflect.Field;
+import org.junit.Before;
 import org.junit.Test;
 import org.onap.policy.apex.model.basicmodel.concepts.AxKey.Compatibility;
 
 public class AxKeyTest {
 
+    private static AxArtifactKey someKey0;
+    private static AxArtifactKey someKey1;
+    private static AxArtifactKey someKey2;
+    private static AxArtifactKey someKey3;
+    private static AxArtifactKey someKey4;
+    private static AxArtifactKey someKey5;
+    private static AxArtifactKey someKey6;
+
+    /**
+     * Sets data in Keys for the tests.
+     */
+    @Before
+    public void setKeys() {
+        someKey0 = new AxArtifactKey();
+        someKey1 = new AxArtifactKey("name", "0.0.1");
+        someKey2 = new AxArtifactKey(someKey1);
+        someKey3 = new AxArtifactKey(someKey1.getId());
+        someKey4 = new AxArtifactKey(someKey1);
+        someKey5 = new AxArtifactKey(someKey1);
+        someKey6 = new AxArtifactKey(someKey1);
+    }
+
+    private void setKeyValues() {
+        someKey0.setName("zero");
+        someKey0.setVersion("0.0.2");
+        someKey3.setVersion("0.0.2");
+        someKey4.setVersion("0.1.2");
+        someKey5.setVersion("1.2.2");
+        someKey6.setVersion("3");
+    }
+
     @Test
     public void testArtifactKey() {
         assertThatThrownBy(() -> new AxArtifactKey("some bad key id"))
             .hasMessage("parameter \"id\": value \"some bad key id\", "
                             + "does not match regular expression \"[A-Za-z0-9\\-_\\.]+:[0-9].[0-9].[0-9]\"");
-        AxArtifactKey someKey0 = new AxArtifactKey();
+
         assertEquals(AxArtifactKey.getNullKey(), someKey0);
 
-        AxArtifactKey someKey1 = new AxArtifactKey("name", "0.0.1");
-        AxArtifactKey someKey2 = new AxArtifactKey(someKey1);
-        AxArtifactKey someKey3 = new AxArtifactKey(someKey1.getId());
         assertEquals(someKey1, someKey2);
         assertEquals(someKey1, someKey3);
 
         assertEquals(someKey2, someKey1.getKey());
         assertEquals(1, someKey1.getKeys().size());
 
-        someKey0.setName("zero");
-        someKey0.setVersion("0.0.2");
+        setKeyValues();
 
-        someKey3.setVersion("0.0.2");
+        someKey0.clean();
+        assertNotNull(someKey0.toString());
 
-        AxArtifactKey someKey4 = new AxArtifactKey(someKey1);
-        someKey4.setVersion("0.1.2");
+        AxArtifactKey someKey7 = new AxArtifactKey(someKey1);
+        assertEquals(150332875, someKey7.hashCode());
+        assertEquals(0, someKey7.compareTo(someKey1));
+        assertEquals(-12, someKey7.compareTo(someKey0));
 
-        AxArtifactKey someKey5 = new AxArtifactKey(someKey1);
-        someKey5.setVersion("1.2.2");
+        assertThatThrownBy(() -> someKey0.compareTo(null))
+            .hasMessage("comparison object may not be null");
+        assertEquals(0, someKey0.compareTo(someKey0));
+        assertEquals(353602977, someKey0.compareTo(new AxReferenceKey()));
 
-        AxArtifactKey someKey6 = new AxArtifactKey(someKey1);
-        someKey6.setVersion("3");
+        assertNotNull(someKey0);
+        // disabling sonar because this code tests the equals() method
+        assertEquals(someKey0, someKey0); // NOSONAR
+        assertNotEquals(someKey0, (Object) new AxReferenceKey());
+    }
+
+    @Test
+    public void testAxCompatibility() {
+        setKeyValues();
 
         assertEquals(Compatibility.DIFFERENT, someKey0.getCompatibility(new AxReferenceKey()));
         assertEquals(Compatibility.DIFFERENT, someKey0.getCompatibility(someKey1));
@@ -79,6 +119,11 @@ public class AxKeyTest {
         assertFalse(someKey1.isCompatible(someKey0));
         assertFalse(someKey1.isCompatible(someKey5));
         assertFalse(someKey1.isCompatible(new AxReferenceKey()));
+    }
+
+    @Test
+    public void testAxValidation() {
+        setKeyValues();
 
         assertEquals(AxValidationResult.ValidationResult.VALID,
                         someKey0.validate(new AxValidationResult()).getValidationResult());
@@ -94,24 +139,11 @@ public class AxKeyTest {
                         someKey5.validate(new AxValidationResult()).getValidationResult());
         assertEquals(AxValidationResult.ValidationResult.VALID,
                         someKey6.validate(new AxValidationResult()).getValidationResult());
+    }
 
-        someKey0.clean();
-        assertNotNull(someKey0.toString());
-
-        AxArtifactKey someKey7 = new AxArtifactKey(someKey1);
-        assertEquals(150332875, someKey7.hashCode());
-        assertEquals(0, someKey7.compareTo(someKey1));
-        assertEquals(-12, someKey7.compareTo(someKey0));
-
-        assertThatThrownBy(() -> someKey0.compareTo(null))
-            .hasMessage("comparison object may not be null");
-        assertEquals(0, someKey0.compareTo(someKey0));
-        assertEquals(353602977, someKey0.compareTo(new AxReferenceKey()));
-
-        assertNotNull(someKey0);
-        // disabling sonar because this code tests the equals() method
-        assertEquals(someKey0, someKey0); // NOSONAR
-        assertNotEquals(someKey0, (Object) new AxReferenceKey());
+    @Test
+    public void testNullKey() {
+        setKeyValues();
 
         AxArtifactKey nullKey0 = AxArtifactKey.getNullKey();
         assertTrue(nullKey0.isNullKey());
@@ -121,7 +153,6 @@ public class AxKeyTest {
         assertTrue(nullKey2.isNullKey());
         AxArtifactKey notnullKey = new AxArtifactKey("Blah", AxKey.NULL_KEY_VERSION);
         assertFalse(notnullKey.isNullKey());
-
     }