Increase test coverage for plugins-executor-mvel

Add junit test cases into apex-pdp/plugins/plugins-executor-mvel

Issue-ID: POLICY-1523
Change-Id: I74d47974a326c7fbd53a0b7d88262ef1dbd54c8c
Signed-off-by: Hengye <yehui.wang@est.tech>

7 files changed, 496 insertions, 15 deletions

diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java
index 5086259a8..bdf6b1363 100644
--- a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutor.java
@@ -98,11 +98,7 @@ public class MvelStateFinalizerExecutor extends StateFinalizerExecutor {
         executePost(returnValue);
 
         // Send back the return event
-        if (returnValue) {
-            return getOutgoing();
-        } else {
-            return null;
-        }
+        return getOutgoing();
     }
 
     /**
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java
index 457539411..1a3611854 100644
--- a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutor.java
@@ -97,11 +97,7 @@ public class MvelTaskExecutor extends TaskExecutor {
         executePost(returnValue);
 
         // Send back the return event
-        if (returnValue) {
-            return getOutgoing();
-        } else {
-            return null;
-        }
+        return getOutgoing();
     }
 
     /**
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java
index b07c5e260..f17f1b9ad 100644
--- a/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/main/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutor.java
@@ -99,11 +99,7 @@ public class MvelTaskSelectExecutor extends TaskSelectExecutor {
         executePost(returnValue);
 
         // Send back the return event
-        if (returnValue) {
-            return getOutgoing();
-        } else {
-            return null;
-        }
+        return getOutgoing();
     }
 
     /**
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelExecutorParametersTest.java b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelExecutorParametersTest.java
new file mode 100644
index 000000000..987af43a4
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelExecutorParametersTest.java
@@ -0,0 +1,36 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Ericsson. All rights reserved.
+ * ================================================================================
+ * 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.plugins.executor.mvel;
+
+import static org.junit.Assert.assertNotNull;
+
+import org.junit.Test;
+
+/**
+ * Test the MvelExecutorParameters class.
+ */
+public class MvelExecutorParametersTest {
+
+    @Test
+    public void testJavaExecutorParameters() {
+        assertNotNull(new MvelExecutorParameters());
+    }
+}
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutorTest.java b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutorTest.java
new file mode 100644
index 000000000..ac2503182
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelStateFinalizerExecutorTest.java
@@ -0,0 +1,177 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Ericsson. All rights reserved.
+ * ================================================================================
+ * 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.plugins.executor.mvel;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.context.parameters.ContextParameterConstants;
+import org.onap.policy.apex.context.parameters.DistributorParameters;
+import org.onap.policy.apex.context.parameters.LockManagerParameters;
+import org.onap.policy.apex.context.parameters.PersistorParameters;
+import org.onap.policy.apex.core.engine.EngineParameterConstants;
+import org.onap.policy.apex.core.engine.EngineParameters;
+import org.onap.policy.apex.core.engine.context.ApexInternalContext;
+import org.onap.policy.apex.core.engine.event.EnEvent;
+import org.onap.policy.apex.core.engine.executor.StateExecutor;
+import org.onap.policy.apex.core.engine.executor.exception.StateMachineException;
+import org.onap.policy.apex.core.engine.executor.impl.ExecutorFactoryImpl;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
+import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
+import org.onap.policy.apex.model.policymodel.concepts.AxState;
+import org.onap.policy.apex.model.policymodel.concepts.AxStateFinalizerLogic;
+import org.onap.policy.common.parameters.ParameterService;
+import org.slf4j.ext.XLogger;
+import org.slf4j.ext.XLoggerFactory;
+
+/**
+ * Test the MvelStateFinalizerExecutor class.
+ *
+ */
+public class MvelStateFinalizerExecutorTest {
+
+    private static final XLogger LOGGER = XLoggerFactory.getXLogger(MvelStateFinalizerExecutorTest.class);
+    /**
+     * Initiate Parameters.
+     */
+    @Before
+    public void initiateParameters() {
+        ParameterService.register(new DistributorParameters());
+        ParameterService.register(new LockManagerParameters());
+        ParameterService.register(new PersistorParameters());
+        ParameterService.register(new EngineParameters());
+    }
+
+    /**
+     * Clear down Parameters.
+     */
+    @After
+    public void clearParameters() {
+        ParameterService.deregister(ContextParameterConstants.DISTRIBUTOR_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.LOCKING_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.PERSISTENCE_GROUP_NAME);
+        ParameterService.deregister(EngineParameterConstants.MAIN_GROUP_NAME);
+    }
+
+    @Test
+    public void testJavaStateFinalizerExecutor() {
+        MvelStateFinalizerExecutor msfe = new MvelStateFinalizerExecutor();
+        assertNotNull(msfe);
+
+        try {
+            msfe.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception msfeException) {
+            assertEquals(java.lang.NullPointerException.class, msfeException.getClass());
+        }
+
+        ApexInternalContext internalContext = null;
+        try {
+            internalContext = new ApexInternalContext(new AxPolicyModel());
+        } catch (ContextException e) {
+            fail("test should not throw an exception here");
+        }
+
+        StateExecutor parentStateExcutor = null;
+        try {
+            parentStateExcutor = new StateExecutor(new ExecutorFactoryImpl());
+        } catch (StateMachineException e) {
+            fail("test should not throw an exception here");
+        }
+
+        AxState state = new AxState();
+        parentStateExcutor.setContext(null, state, internalContext);
+        AxStateFinalizerLogic stateFinalizerLogic = new AxStateFinalizerLogic();
+        msfe.setContext(parentStateExcutor, stateFinalizerLogic, internalContext);
+
+        stateFinalizerLogic.setLogic("x > 1 2 ()");
+        try {
+            msfe.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception msfeException) {
+            assertEquals("failed to compile MVEL code for state NULL:0.0.0:NULL:NULL", msfeException.getMessage());
+        }
+
+        stateFinalizerLogic.setLogic("java.lang.String");
+
+        try {
+            msfe.prepare();
+        } catch (Exception msfeException) {
+            fail("test should not throw an exception here");
+        }
+
+        try {
+            msfe.execute(-1, null);
+            fail("test should throw an exception here");
+        } catch (Exception msfeException) {
+            assertEquals("failed to execute MVEL code for state NULL:0.0.0:NULL:NULL",
+                    msfeException.getMessage());
+        }
+
+        AxEvent axEvent = new AxEvent(new AxArtifactKey("Event", "0.0.1"));
+        EnEvent event = new EnEvent(axEvent);
+        try {
+            msfe.execute(-1, event);
+            fail("test should throw an exception here");
+        } catch (Exception msfeException) {
+            assertEquals("failed to execute MVEL code for state NULL:0.0.0:NULL:NULL",
+                    msfeException.getMessage());
+        }
+
+        stateFinalizerLogic.setLogic("executionId !=-1");
+        try {
+            msfe.prepare();
+            msfe.execute(-1, event);
+            fail("test should throw an exception here");
+        } catch (Exception msfeException) {
+            assertEquals(
+                    "execute-post: state finalizer logic execution failure on state \"NULL:0.0.0:NULL:NULL\" "
+                            + "on finalizer logic NULL:0.0.0:NULL:NULL",
+                    msfeException.getMessage());
+        }
+
+        stateFinalizerLogic.setLogic(
+                "if (executionId == -1) {return false;}setSelectedStateOutputName(\"SelectedOutputIsMe\");"
+                        + "return true;");
+        state.getStateOutputs().put("SelectedOutputIsMe", null);
+        try {
+            msfe.prepare();
+            String stateOutput = msfe.execute(0, event);
+            assertEquals("SelectedOutputIsMe", stateOutput);
+        } catch (Exception msfeException) {
+            LOGGER.warn("Unexpected exception happened here.", msfeException);
+            fail("test should not throw an exception here");
+        } finally {
+            try {
+                msfe.cleanUp();
+            } catch (StateMachineException msfeException) {
+                LOGGER.warn("Unexpected exception happened here.", msfeException);
+                fail("test should not throw an exception here");
+            }
+        }
+    }
+}
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutorTest.java b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutorTest.java
new file mode 100644
index 000000000..5d65a4bb8
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskExecutorTest.java
@@ -0,0 +1,139 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Ericsson. All rights reserved.
+ * ================================================================================
+ * 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.plugins.executor.mvel;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.context.parameters.ContextParameterConstants;
+import org.onap.policy.apex.context.parameters.DistributorParameters;
+import org.onap.policy.apex.context.parameters.LockManagerParameters;
+import org.onap.policy.apex.context.parameters.PersistorParameters;
+import org.onap.policy.apex.core.engine.context.ApexInternalContext;
+import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
+import org.onap.policy.apex.model.policymodel.concepts.AxTask;
+import org.onap.policy.common.parameters.ParameterService;
+
+/**
+ * Test the MvelTaskExecutor class.
+ *
+ */
+public class MvelTaskExecutorTest {
+    /**
+     * Initiate Parameters.
+     */
+    @Before
+    public void initiateParameters() {
+        ParameterService.register(new DistributorParameters());
+        ParameterService.register(new LockManagerParameters());
+        ParameterService.register(new PersistorParameters());
+    }
+
+    /**
+     * Clear Parameters.
+     */
+    @After
+    public void clearParameters() {
+        ParameterService.deregister(ContextParameterConstants.DISTRIBUTOR_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.LOCKING_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.PERSISTENCE_GROUP_NAME);
+    }
+
+    @Test
+    public void testMvelTaskExecutor() {
+        MvelTaskExecutor mte = new MvelTaskExecutor();
+        assertNotNull(mte);
+
+        try {
+            mte.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception mteException) {
+            assertEquals(java.lang.NullPointerException.class, mteException.getClass());
+        }
+
+        AxTask task = new AxTask();
+        ApexInternalContext internalContext = null;
+        try {
+            internalContext = new ApexInternalContext(new AxPolicyModel());
+        } catch (ContextException e) {
+            fail("test should not throw an exception here");
+        }
+        mte.setContext(null, task, internalContext);
+
+        task.getTaskLogic().setLogic("x > 1 2 ()");
+        try {
+            mte.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception mteException) {
+            assertEquals("failed to compile MVEL code for task NULL:0.0.0", mteException.getMessage());
+        }
+
+        task.getTaskLogic().setLogic("x");
+
+        try {
+            mte.prepare();
+        } catch (Exception mteException) {
+            fail("test should not throw an exception here");
+        }
+
+        try {
+            mte.execute(-1, null);
+            fail("test should throw an exception here");
+        } catch (Exception mteException) {
+            assertEquals(java.lang.NullPointerException.class, mteException.getClass());
+        }
+
+        Map<String, Object> incomingParameters = new HashMap<>();
+        try {
+            mte.execute(-1, incomingParameters);
+            fail("test should throw an exception here");
+        } catch (Exception mteException) {
+            assertEquals("failed to execute MVEL code for task NULL:0.0.0", mteException.getMessage());
+        }
+
+        task.getTaskLogic().setLogic("executionId != -1");
+        try {
+            mte.prepare();
+            mte.execute(-1, incomingParameters);
+            fail("test should throw an exception here");
+        } catch (Exception mteException) {
+            assertEquals("execute-post: task logic execution failure on task \"NULL\" in model NULL:0.0.0",
+                    mteException.getMessage());
+        }
+
+        try {
+            mte.prepare();
+            Map<String, Object> returnMap = mte.execute(0, incomingParameters);
+            assertEquals(0, returnMap.size());
+            mte.cleanUp();
+        } catch (Exception mteException) {
+            fail("test should not throw an exception here");
+        }
+    }
+}
diff --git a/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutorTest.java b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutorTest.java
new file mode 100644
index 000000000..7c585ee2f
--- /dev/null
+++ b/plugins/plugins-executor/plugins-executor-mvel/src/test/java/org/onap/policy/apex/plugins/executor/mvel/MvelTaskSelectExecutorTest.java
@@ -0,0 +1,141 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2019 Ericsson. All rights reserved.
+ * ================================================================================
+ * 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.plugins.executor.mvel;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.fail;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.apex.context.ContextException;
+import org.onap.policy.apex.context.parameters.ContextParameterConstants;
+import org.onap.policy.apex.context.parameters.DistributorParameters;
+import org.onap.policy.apex.context.parameters.LockManagerParameters;
+import org.onap.policy.apex.context.parameters.PersistorParameters;
+import org.onap.policy.apex.core.engine.context.ApexInternalContext;
+import org.onap.policy.apex.core.engine.event.EnEvent;
+import org.onap.policy.apex.model.basicmodel.concepts.AxArtifactKey;
+import org.onap.policy.apex.model.eventmodel.concepts.AxEvent;
+import org.onap.policy.apex.model.policymodel.concepts.AxPolicyModel;
+import org.onap.policy.apex.model.policymodel.concepts.AxState;
+import org.onap.policy.common.parameters.ParameterService;
+
+/**
+ * Test the MvelTaskSelectExecutor class.
+ *
+ */
+public class MvelTaskSelectExecutorTest {
+    /**
+     * Initiate Parameters.
+     */
+    @Before
+    public void initiateParameters() {
+        ParameterService.register(new DistributorParameters());
+        ParameterService.register(new LockManagerParameters());
+        ParameterService.register(new PersistorParameters());
+    }
+
+    /**
+     * Clear Parameters.
+     */
+    @After
+    public void clearParameters() {
+        ParameterService.deregister(ContextParameterConstants.DISTRIBUTOR_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.LOCKING_GROUP_NAME);
+        ParameterService.deregister(ContextParameterConstants.PERSISTENCE_GROUP_NAME);
+    }
+
+    @Test
+    public void testJavaTaskSelectExecutor() {
+        MvelTaskSelectExecutor mtse = new MvelTaskSelectExecutor();
+        assertNotNull(mtse);
+
+        try {
+            mtse.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception mtseException) {
+            assertEquals(java.lang.NullPointerException.class, mtseException.getClass());
+        }
+
+        AxState state = new AxState();
+        ApexInternalContext internalContext = null;
+        try {
+            internalContext = new ApexInternalContext(new AxPolicyModel());
+        } catch (ContextException e) {
+            fail("test should not throw an exception here");
+        }
+        mtse.setContext(null, state, internalContext);
+
+        state.getTaskSelectionLogic().setLogic("x > 1 2 ()");
+        try {
+            mtse.prepare();
+            fail("test should throw an exception here");
+        } catch (Exception mtseException) {
+            assertEquals("failed to compile MVEL code for state NULL:0.0.0:NULL:NULL", mtseException.getMessage());
+        }
+
+        state.getTaskSelectionLogic().setLogic("java.lang.String");
+
+        try {
+            mtse.prepare();
+        } catch (Exception mtseException) {
+            fail("test should not throw an exception here");
+        }
+
+        try {
+            mtse.execute(-1, null);
+            fail("test should throw an exception here");
+        } catch (Exception mtseException) {
+            assertEquals(java.lang.NullPointerException.class, mtseException.getClass());
+        }
+
+        AxEvent axEvent = new AxEvent(new AxArtifactKey("Event", "0.0.1"));
+        EnEvent event = new EnEvent(axEvent);
+        try {
+            mtse.execute(-1, event);
+            fail("test should throw an exception here");
+        } catch (Exception mtseException) {
+            assertEquals("failed to execute MVEL code for state NULL:0.0.0:NULL:NULL",
+                    mtseException.getMessage());
+        }
+
+        state.getTaskSelectionLogic().setLogic("executionId != -1");
+        try {
+            mtse.prepare();
+            mtse.execute(-1, event);
+            fail("test should throw an exception here");
+        } catch (Exception mtseException) {
+            assertEquals("execute-post: task selection logic failed on state \"NULL:0.0.0:NULL:NULL\"",
+                    mtseException.getMessage());
+        }
+
+        try {
+            mtse.prepare();
+            AxArtifactKey taskKey = mtse.execute(0, event);
+            assertEquals("NULL:0.0.0", taskKey.getId());
+            mtse.cleanUp();
+        } catch (Exception mtseException) {
+            fail("test should not throw an exception here");
+        }
+    }
+}