Merge "Provide a way to trigger Drools rules when an update occurs"

1 files changed, 110 insertions, 0 deletions

diff --git a/feature-drools-init/src/test/java/org/onap/policy/drools/droolsinit/DroolsInitFeatureTest.java b/feature-drools-init/src/test/java/org/onap/policy/drools/droolsinit/DroolsInitFeatureTest.java
new file mode 100644
index 00000000..36e64960
--- /dev/null
+++ b/feature-drools-init/src/test/java/org/onap/policy/drools/droolsinit/DroolsInitFeatureTest.java
@@ -0,0 +1,110 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * feature-drools-init
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.droolsinit;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.mockito.Matchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.ScheduledThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import org.junit.AfterClass;
+import org.junit.Before;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.kie.api.runtime.KieSession;
+import org.kie.api.runtime.rule.FactHandle;
+import org.onap.policy.drools.core.PolicySession;
+import org.onap.policy.drools.system.PolicyEngineConstants;
+import org.powermock.reflect.Whitebox;
+
+public class DroolsInitFeatureTest {
+    private static final String POLICY_ENGINE_EXECUTOR_FIELD = "executorService";
+    private static ScheduledExecutorService saveExec;
+    private static PolicySession policySession;
+    private static KieSession kieSession;
+
+    private DroolsInitFeature feature;
+
+    /**
+     * Class-level initialization.
+     */
+    @BeforeClass
+    public static void setUpBeforeClass() {
+        saveExec = Whitebox.getInternalState(PolicyEngineConstants.getManager(), POLICY_ENGINE_EXECUTOR_FIELD);
+
+        policySession = mock(PolicySession.class);
+        kieSession = mock(KieSession.class);
+        when(policySession.getKieSession()).thenReturn(kieSession);
+    }
+
+    /**
+     * Restore 'PolicyEngineConstants.manager'.
+     */
+    @AfterClass
+    public static void cleanup() {
+        Whitebox.setInternalState(PolicyEngineConstants.getManager(), POLICY_ENGINE_EXECUTOR_FIELD, saveExec);
+    }
+
+    @Before
+    public void setUp() {
+        feature = new DroolsInitFeature();
+    }
+
+    @Test
+    public void getSequenceNumberTest() {
+        assertEquals(0, feature.getSequenceNumber());
+    }
+
+    @Test
+    public void selectThreadModelTest() {
+        assertNull(feature.selectThreadModel(policySession));
+    }
+
+    @Test
+    public void initTest() {
+        FactHandle factHandle = mock(FactHandle.class);
+        when(kieSession.insert(any())).thenReturn(factHandle);
+        when(kieSession.getObject(factHandle)).thenReturn(new Object());
+
+        // dummy 'ScheduledExecutorService' -- 'schedule' runs immediately
+        ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(3) {
+            @Override
+            public ScheduledFuture<?> schedule(Runnable runnable, long delay, TimeUnit unit) {
+                runnable.run();
+                return null;
+            }
+        };
+
+        Whitebox.setInternalState(PolicyEngineConstants.getManager(), POLICY_ENGINE_EXECUTOR_FIELD, executorService);
+
+        // triggers creation of 'DroolsInitFeature.Init'
+        feature.selectThreadModel(policySession);
+
+        // prove that the 'delete' code ran
+        verify(kieSession).delete(factHandle);
+    }
+}