Code coverage for Policy distribution

Added code coverage for some missing instructions on main package

Issue-ID: POLICY-3090
Change-Id: I1ba870a4b3c7f63f6c00dfc3f4b908eee7ca701b
Signed-off-by: adheli.tavares <adheli.tavares@est.tech>

2 files changed, 95 insertions, 1 deletions

diff --git a/main/src/test/java/org/onap/policy/distribution/main/parameters/TestDistributionParameterGroup.java b/main/src/test/java/org/onap/policy/distribution/main/parameters/TestDistributionParameterGroup.java
index 6e2f5377..fb5dfbd4 100644
--- a/main/src/test/java/org/onap/policy/distribution/main/parameters/TestDistributionParameterGroup.java
+++ b/main/src/test/java/org/onap/policy/distribution/main/parameters/TestDistributionParameterGroup.java
@@ -2,7 +2,7 @@
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2018 Ericsson. All rights reserved.
  *  Modifications Copyright (C) 2019-2020 AT&T Intellectual Property. All rights reserved.
- *  Modifications Copyright (C) 2020 Nordix Foundation
+ *  Modifications Copyright (C) 2020-2021 Nordix Foundation.
  * ================================================================================
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@
 
 package org.onap.policy.distribution.main.parameters;
 
+import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
@@ -227,4 +228,26 @@ public class TestDistributionParameterGroup {
                 .contains("\"org.onap.policy.common.endpoints.parameters.RestServerParameters\" INVALID, "
                         + "parameter group has status INVALID"));
     }
+
+    @Test
+    public void testDistributionParameterGroup_NullRestServerParameters() {
+        final RestServerParameters restServerParameters = null;
+        final Map<String, ReceptionHandlerParameters> receptionHandlerParameters =
+                commonTestData.getReceptionHandlerParameters(false);
+        final Map<String, ReceptionHandlerConfigurationParameterGroup> receptionHandlerConfigurations =
+                commonTestData.getReceptionHandlerConfigurationParameters(false);
+        final Map<String, PolicyForwarderConfigurationParameterGroup> forwarderConfigurations =
+                commonTestData.getPolicyForwarderConfigurationParameters(false);
+        final Map<String, PolicyDecoderConfigurationParameterGroup> decoderConfigurations =
+                commonTestData.getPolicyDecoderConfigurationParameters(false);
+
+        final DistributionParameterGroup distributionParameters = new DistributionParameterGroup(
+                CommonTestData.DISTRIBUTION_GROUP_NAME, restServerParameters, receptionHandlerParameters,
+                receptionHandlerConfigurations, forwarderConfigurations, decoderConfigurations);
+        final GroupValidationResult validationResult = distributionParameters.validate();
+        assertFalse(validationResult.isValid());
+        assertThat(validationResult.getResult())
+                .contains("parameter group \"UNDEFINED\" INVALID, "
+                        + "must have restServerParameters to configure distribution rest server");
+    }
 }
diff --git a/main/src/test/java/org/onap/policy/distribution/main/startstop/TestDistributionCommandLineArguments.java b/main/src/test/java/org/onap/policy/distribution/main/startstop/TestDistributionCommandLineArguments.java
new file mode 100644
index 00000000..7e72b852
--- /dev/null
+++ b/main/src/test/java/org/onap/policy/distribution/main/startstop/TestDistributionCommandLineArguments.java
@@ -0,0 +1,71 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  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.
+ * 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.onap.policy.distribution.main.startstop;
+
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.junit.Assert.assertThrows;
+
+import org.junit.Test;
+import org.onap.policy.distribution.main.PolicyDistributionException;
+import org.onap.policy.distribution.main.PolicyDistributionRuntimeException;
+
+/**
+ * Class to perform unit test of DistributionCommandLineArguments.
+ *
+ * @author Adheli Tavares (adheli.tavares@est.tech)
+ *
+ */
+public class TestDistributionCommandLineArguments {
+
+    @Test
+    public void testDistributionCommandLineArgumentsException() {
+        String[] wrongParams = {"arg1", "nothing", "{\"someJson\":1}"};
+        assertThrows(PolicyDistributionRuntimeException.class, () -> new DistributionCommandLineArguments(wrongParams));
+    }
+
+    @Test
+    public void testValidateFileNameEmpty() {
+        String[] argsOnlyKeyNoValue = {"-c", ""};
+        assertValidate(argsOnlyKeyNoValue, "policy distribution configuration file was not specified as an argument");
+    }
+
+    @Test
+    public void testValidateFileNameDoesNotExist() {
+        String[] fileNameNotExistentArgs = {"-c", "someFileName.json"};
+        assertValidate(fileNameNotExistentArgs,
+                "policy distribution configuration file \"someFileName.json\" does not exist");
+    }
+
+    @Test
+    public void testValidateFileNameIsNotFile() {
+        String[] folderAsFileNameArgs = {"-c", "src/test/resources/parameters"};
+        assertValidate(folderAsFileNameArgs,
+                "policy distribution configuration file \"src/test/resources/parameters\" is not a normal file");
+    }
+
+    protected void assertValidate(String[] testArgs, String expectedErrorMsg) {
+        DistributionCommandLineArguments sutArgs = new DistributionCommandLineArguments(testArgs);
+
+        assertThatThrownBy(() -> sutArgs.validate())
+            .isInstanceOf(PolicyDistributionException.class)
+            .hasMessage(expectedErrorMsg);
+    }
+}