Replace try/catch blocks with assertj - apex-pdp

Replaced try/catch blocks in apex-pdp with assertj assertions

Issue-ID: POLICY-2451
Change-Id: I83375b9e0f38d399b84bb68ce5d441e1cec73ef5
Signed-off-by: waynedunican <wayne.dunican@est.tech>

3 files changed, 56 insertions, 163 deletions

diff --git a/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/model/SampleDomainModelSaverTest.java b/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/model/SampleDomainModelSaverTest.java
index 241f69dc0..c7ab1d9a0 100644
--- a/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/model/SampleDomainModelSaverTest.java
+++ b/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/model/SampleDomainModelSaverTest.java
@@ -1,28 +1,29 @@
 /*-
  * ============LICENSE_START=======================================================
  *  Copyright (C) 2018 Ericsson. All rights reserved.
+ *  Modifications Copyright (C) 2020 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.apex.testsuites.integration.common.model;
 
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
 
 import java.io.File;
 import java.io.IOException;
@@ -30,6 +31,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Comparator;
 import org.junit.Test;
+import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
 
 /**
  * Test the sample domain model saver.
@@ -37,32 +39,19 @@ import org.junit.Test;
 public class SampleDomainModelSaverTest {
 
     @Test
-    public void testSampleDomainModelSaver() throws IOException {
-        try {
-            SampleDomainModelSaver.main(null);
-            fail("test should throw an exception");
-        } catch (Exception exc) {
-            assertEquals("java.lang.NullPointerException", exc.getClass().getName());
-        }
+    public void testSampleDomainModelSaver() throws IOException, ApexException {
+        assertThatThrownBy(() -> SampleDomainModelSaver.main(null)).isInstanceOf(NullPointerException.class);
 
         String[] args0 =
             { "two", "arguments" };
 
-        try {
-            SampleDomainModelSaver.main(args0);
-        } catch (Exception exc) {
-            fail("test should not throw an exception");
-        }
+        SampleDomainModelSaver.main(args0);
 
         Path tempDirectory = Files.createTempDirectory("ApexModelTempDir");
         String[] args1 =
             { tempDirectory.toString() };
 
-        try {
-            SampleDomainModelSaver.main(args1);
-        } catch (Exception exc) {
-            fail("test should not throw an exception");
-        }
+        SampleDomainModelSaver.main(args1);
 
         File tempDir = new File(tempDirectory.toString());
         assertTrue(tempDir.isDirectory());
diff --git a/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/testclasses/TestPingClassTest.java b/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/testclasses/TestPingClassTest.java
index 82f46c04a..92f86f434 100644
--- a/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/testclasses/TestPingClassTest.java
+++ b/testsuites/integration/integration-common/src/test/java/org/onap/policy/apex/testsuites/integration/common/testclasses/TestPingClassTest.java
@@ -21,8 +21,8 @@
 
 package org.onap.policy.apex.testsuites.integration.common.testclasses;
 
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.fail;
 
 import org.junit.Test;
 import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
@@ -32,7 +32,7 @@ import org.onap.policy.apex.model.basicmodel.concepts.ApexException;
  */
 public class TestPingClassTest {
     @Test
-    public void testPingClass() {
+    public void testPingClass() throws ApexException {
         PingTestClass ptc = new PingTestClass();
 
         ptc.setName("Hello");
@@ -46,84 +46,43 @@ public class TestPingClassTest {
 
         ptc.setPongTime(-1);
         assertEquals(-1, ptc.getPongTime());
-
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, name does not start with \"Rose\"", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, name does not start with \"Rose\"");
 
         ptc.setName(null);
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, name length null or less than 4", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, name length null or less than 4");
 
         ptc.setName("Ros");
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, name length null or less than 4", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, name length null or less than 4");
 
         ptc.setName("Rose");
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, description length null or less than 44", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, description length null or less than 44");
 
         ptc.setDescription(null);
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, description length null or less than 44", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, description length null or less than 44");
 
         ptc.setDescription("A rose by any other name would smell as swee");
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, description length null or less than 44", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, description length null or less than 44");
 
         ptc.setDescription("A rose by any other name would smell as swell");
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, description is incorrect", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+           .hasMessageContaining("TestPing is not valid, description is incorrect");
 
         ptc.setDescription("A rose by any other name would smell as sweet");
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, pong time -1 is less than ping time 0", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+            .hasMessageContaining("TestPing is not valid, pong time -1 is less than ping time 0");
 
         ptc.setPongTime(-2);
-        try {
-            ptc.verify();
-            fail("test should throw an exception");
-        } catch (ApexException ae) {
-            assertEquals("TestPing is not valid, pong time -2 is less than ping time 0", ae.getMessage());
-        }
+        assertThatThrownBy(() -> ptc.verify()).isInstanceOf(ApexException.class)
+           .hasMessageContaining("TestPing is not valid, pong time -2 is less than ping time 0");
 
         ptc.setPongTime(1);
-        try {
-            ptc.verify();
-        } catch (ApexException ae) {
-            fail("test should not throw an exception");
-        }
+        ptc.verify();
 
         assertEquals(
                 "PingTestClass(id=0, name=Rose, "
diff --git a/testsuites/integration/integration-context-test/src/test/java/org/onap/policy/apex/testsuites/integration/context/distribution/ContextInstantiation.java b/testsuites/integration/integration-context-test/src/test/java/org/onap/policy/apex/testsuites/integration/context/distribution/ContextInstantiation.java
index 475316a4d..9e9e4626e 100644
--- a/testsuites/integration/integration-context-test/src/test/java/org/onap/policy/apex/testsuites/integration/context/distribution/ContextInstantiation.java
+++ b/testsuites/integration/integration-context-test/src/test/java/org/onap/policy/apex/testsuites/integration/context/distribution/ContextInstantiation.java
@@ -21,6 +21,7 @@
 
 package org.onap.policy.apex.testsuites.integration.context.distribution;
 
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
@@ -242,15 +243,8 @@ public class ContextInstantiation {
         assertTrue(externalContextAlbum.values().containsAll(mapValues));
 
         // Check that clearing does not work
-        try {
-            externalContextAlbum.clear();
-            fail(EXCEPTION_MESSAGE);
-        } catch (final ContextRuntimeException e) {
-            assertEquals("album \"ExternalContextAlbum:0.0.1\" clear() not allowed on read only albums",
-                    e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
+        assertThatThrownBy(() -> externalContextAlbum.clear()).isInstanceOf(ContextRuntimeException.class)
+            .hasMessageContaining("album \"ExternalContextAlbum:0.0.1\" clear() not allowed on read only albums");
         assertEquals(1, externalContextAlbum.size());
 
         assertContextAlbumContains(externalContext, externalContextAlbum);
@@ -258,32 +252,16 @@ public class ContextInstantiation {
         final Set<Entry<String, Object>> entrySet = externalContextAlbum.entrySet();
         assertEquals(1, entrySet.size());
 
-        try {
-            externalContextAlbum.get(null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals("album \"ExternalContextAlbum:0.0.1\" null keys are illegal on keys for get()",
-                    e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
+        assertThatThrownBy(() -> externalContextAlbum.get(null)).isInstanceOf(ContextRuntimeException.class)
+            .hasMessageContaining("album \"ExternalContextAlbum:0.0.1\" null keys are illegal on keys for get()");
         final Object aObject = externalContextAlbum.get(EXTERNAL_CONTEXT);
         assertEquals(aObject, externalContext);
 
         // put null keys should fail, throws a runtime exception
-        try {
-            externalContextAlbum.put(null, null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals("album \"ExternalContextAlbum:0.0.1\" null keys are illegal on keys for put()",
-                    e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
-        try {
-            externalContextAlbum.put("TestExternalContextItem00A", null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItem00A\" for put()", e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
+        assertThatThrownBy(() -> externalContextAlbum.put(null, null))
+            .hasMessageContaining("album \"ExternalContextAlbum:0.0.1\" null keys are illegal on keys for put()");
+        assertThatThrownBy(() -> externalContextAlbum.put("TestExternalContextItem00A", null))
+            .hasMessageContaining(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItem00A\" for put()");
         assertEquals(tciAa, externalContextItem.getTestExternalContextItem00A());
 
         // Should return the hash set
@@ -305,29 +283,17 @@ public class ContextInstantiation {
         assertTrue(externalContextAlbum.put(EXTERNAL_CONTEXT, externalContext).equals(externalContextOther));
         externalContextItem = (TestExternalContextItem) externalContextAlbum.get(EXTERNAL_CONTEXT);
         assertEquals(INT_VAL_3, externalContextItem.getTestExternalContextItem002().getIntValue());
+        assertThatThrownBy(() -> externalContextAlbum.put("TestExternalContextItem00A", null))
+            .hasMessageContaining(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItem00A\" for put()");
 
-        try {
-            externalContextAlbum.put("TestExternalContextItem00A", null);
-        } catch (final ContextRuntimeException e) {
-            assert (e.getMessage().equals(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItem00A\" for put()"));
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
         assertTrue(externalContextAlbum.get(EXTERNAL_CONTEXT).equals(externalContext));
 
-        try {
-            externalContextAlbum.put("TestExternalContextItemFFF", null);
-        } catch (final ContextRuntimeException e) {
-            assert (e.getMessage().equals(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItemFFF\" for put()"));
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
+        assertThatThrownBy(() -> externalContextAlbum.put("TestExternalContextItemFFF", null))
+            .hasMessageContaining(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItemFFF\" for put()");
         assertEquals(1, externalContextAlbum.size());
 
-        try {
-            externalContextAlbum.put("TestExternalContextItemFFF", null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItemFFF\" for put()", e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
+        assertThatThrownBy(() -> externalContextAlbum.put("TestExternalContextItemFFF", null))
+            .hasMessageContaining(NULL_VALUES_ILLEGAL_TAG + "\"TestExternalContextItemFFF\" for put()");
         assertEquals(1, externalContextAlbum.size());
 
         // Should ignore remove
@@ -341,23 +307,13 @@ public class ContextInstantiation {
 
     private void assertContextAlbumContains(final TestExternalContextItem externalContext,
             final ContextAlbum externalContextAlbum) {
-        try {
-            externalContextAlbum.containsKey(null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals("null values are illegal on method parameter \"key\"", e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
+        assertThatThrownBy(() -> externalContextAlbum.containsKey(null))
+            .hasMessageContaining("null values are illegal on method parameter \"key\"");
         assertTrue(externalContextAlbum.containsKey(EXTERNAL_CONTEXT));
         assertTrue(!externalContextAlbum.containsKey(GLOBAL_CONTEXT_KEY));
 
-        try {
-            externalContextAlbum.containsValue(null);
-        } catch (final ContextRuntimeException e) {
-            assertEquals("null values are illegal on method parameter \"value\"", e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
+        assertThatThrownBy(() -> externalContextAlbum.containsValue(null))
+            .hasMessageContaining("null values are illegal on method parameter \"value\"");
         assertTrue(externalContextAlbum.containsValue(externalContext));
         assertFalse(externalContextAlbum.containsValue("Hello"));
     }
@@ -444,23 +400,12 @@ public class ContextInstantiation {
 
     private void assertPutMethods(final ContextAlbum policyContextAlbum, final TestContextStringItem contextStringItem,
             final Map<String, Object> valueMapA) {
-        try {
-            policyContextAlbum.put(TEST_POLICY_CONTEXT_ITEM000, contextStringItem);
-            fail(EXCEPTION_MESSAGE);
-        } catch (final ContextRuntimeException e) {
-            assertEquals(getMessage(TEST_POLICY_CONTEXT_ITEM000, "TestContextItem006",
-                    TestContextStringItem.class.getName(), "stringValue=" + STRING_VAL), e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
-
-        try {
-            policyContextAlbum.putAll(valueMapA);
-            fail(EXCEPTION_MESSAGE);
-        } catch (final ContextRuntimeException e) {
-            assertEquals(getMessage(TEST_POLICY_CONTEXT_ITEM001, "TestContextItem003",
-                    TestContextLongItem.class.getName(), "longValue=" + INT_VAL_3), e.getMessage());
-            LOGGER.trace(NORMAL_TEST_EXCEPTION, e);
-        }
+        assertThatThrownBy(() -> policyContextAlbum.put(TEST_POLICY_CONTEXT_ITEM000, contextStringItem))
+            .hasMessageContaining(getMessage(TEST_POLICY_CONTEXT_ITEM000, "TestContextItem006",
+                    TestContextStringItem.class.getName(), "stringValue=" + STRING_VAL));
+        assertThatThrownBy(() -> policyContextAlbum.putAll(valueMapA))
+            .hasMessageContaining(getMessage(TEST_POLICY_CONTEXT_ITEM001, "TestContextItem003",
+                    TestContextLongItem.class.getName(), "longValue=" + INT_VAL_3));
     }
 
     private AxContextModel getAxContextModel() {