1 files changed, 77 insertions, 0 deletions
diff --git a/runtime/src/test/java/org/onap/policy/clamp/clds/sdc/controller/installer/ChainGeneratorTest.java b/runtime/src/test/java/org/onap/policy/clamp/clds/sdc/controller/installer/ChainGeneratorTest.java
new file mode 100644
index 000000000..d7a3b3823
--- /dev/null
+++ b/runtime/src/test/java/org/onap/policy/clamp/clds/sdc/controller/installer/ChainGeneratorTest.java
@@ -0,0 +1,77 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP CLAMP
+ * ================================================================================
+ * Copyright (C) 2019 Nokia 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.clamp.clds.sdc.controller.installer;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class ChainGeneratorTest {
+    private static final String FIRST_APPP = "first_app";
+    private static final String SECOND_APPP = "second_app";
+    private static final String THIRD_APPP = "third_app";
+    private static final String FOURTH_APPP = "fourth_app";
+    private static final String DEFAULT_VERSION = "1.0.0";
+
+    @Test
+    public void getChainOfMicroServicesTest() {
+        BlueprintMicroService ms1 = new BlueprintMicroService(FIRST_APPP, "", "", DEFAULT_VERSION);
+        BlueprintMicroService ms2 = new BlueprintMicroService(SECOND_APPP, "", FIRST_APPP, DEFAULT_VERSION);
+        BlueprintMicroService ms3 = new BlueprintMicroService(THIRD_APPP, "", SECOND_APPP, DEFAULT_VERSION);
+        BlueprintMicroService ms4 = new BlueprintMicroService(FOURTH_APPP, "", THIRD_APPP, DEFAULT_VERSION);
+
+        List<BlueprintMicroService> expectedList = Arrays.asList(ms1, ms2, ms3, ms4);
+        Set<BlueprintMicroService> inputSet = new HashSet<>(expectedList);
+
+        List<BlueprintMicroService> actualList = new ChainGenerator().getChainOfMicroServices(inputSet);
+        Assert.assertEquals(expectedList, actualList);
+    }
+
+    @Test
+    public void getChainOfMicroServicesTwiceNoInputTest() {
+        BlueprintMicroService ms1 = new BlueprintMicroService(FIRST_APPP, "", "", DEFAULT_VERSION);
+        BlueprintMicroService ms2 = new BlueprintMicroService(SECOND_APPP, "", "", DEFAULT_VERSION);
+        BlueprintMicroService ms3 = new BlueprintMicroService(THIRD_APPP, "", SECOND_APPP, DEFAULT_VERSION);
+        BlueprintMicroService ms4 = new BlueprintMicroService(FOURTH_APPP, "", FIRST_APPP, DEFAULT_VERSION);
+
+        Set<BlueprintMicroService> inputSet = new HashSet<>(Arrays.asList(ms1, ms2, ms3, ms4));
+        List<BlueprintMicroService> actualList = new ChainGenerator().getChainOfMicroServices(inputSet);
+        Assert.assertTrue(actualList.isEmpty());
+    }
+
+    @Test
+    public void getChainOfMicroServicesBranchingTest() {
+        BlueprintMicroService ms1 = new BlueprintMicroService(FIRST_APPP, "", "", DEFAULT_VERSION);
+        BlueprintMicroService ms2 = new BlueprintMicroService(SECOND_APPP, "", FIRST_APPP, DEFAULT_VERSION);
+        BlueprintMicroService ms3 = new BlueprintMicroService(THIRD_APPP, "", FIRST_APPP, DEFAULT_VERSION);
+        BlueprintMicroService ms4 = new BlueprintMicroService(FOURTH_APPP, "", FIRST_APPP, DEFAULT_VERSION);
+
+        Set<BlueprintMicroService> inputSet = new HashSet<>(Arrays.asList(ms1, ms2, ms3, ms4));
+        List<BlueprintMicroService> actualList = new ChainGenerator().getChainOfMicroServices(inputSet);
+        Assert.assertTrue(actualList.isEmpty());
+    }
+}