1 files changed, 97 insertions, 0 deletions
diff --git a/catalog-be/src/test/java/org/openecomp/sdc/be/tosca/ComponentCacheTest.java b/catalog-be/src/test/java/org/openecomp/sdc/be/tosca/ComponentCacheTest.java
new file mode 100644
index 0000000000..12027a755d
--- /dev/null
+++ b/catalog-be/src/test/java/org/openecomp/sdc/be/tosca/ComponentCacheTest.java
@@ -0,0 +1,97 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2020 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.openecomp.sdc.be.tosca;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+import static org.openecomp.sdc.be.components.impl.utils.TestDataUtils.aUniqueId;
+import static org.openecomp.sdc.be.components.impl.utils.TestDataUtils.alphaNum;
+import static org.openecomp.sdc.be.tosca.ComponentCache.entry;
+
+import io.vavr.collection.List;
+import java.util.function.BinaryOperator;
+import org.junit.jupiter.api.Test;
+import org.openecomp.sdc.be.components.impl.utils.TestDataUtils;
+import org.openecomp.sdc.be.model.Component;
+import org.openecomp.sdc.be.tosca.ComponentCache.CacheEntry;
+
+public class ComponentCacheTest {
+    private static final BinaryOperator<CacheEntry> RETURN_LATEST = (oldValue, newValue) -> newValue;
+    private static final BinaryOperator<CacheEntry> NO_MERGE = (oldValue, newValue) ->  {
+        fail("Should not merge");
+        return oldValue;
+    };
+
+    @Test
+    public void emptyCase() {
+        ComponentCache cache = ComponentCache.overwritable(NO_MERGE);
+        List<CacheEntry> actual = cache.all().toList();
+        assertTrue(actual.isEmpty());
+    }
+
+    @Test
+    public void emptyCacheShouldNotMerge() {
+        ComponentCache cache = ComponentCache.overwritable(NO_MERGE);
+
+        String id = alphaNum(10);
+        String fileName = alphaNum(10);
+        Component component = aComponent();
+
+        List<CacheEntry> actual = cache
+            .put(id, fileName, component)
+            .all().toList();
+
+        List<CacheEntry> expected = List.of(entry(id, fileName, component));
+        assertEquals(expected, actual);
+    }
+
+    @Test
+    public void nonEmptyCacheShouldMerge() {
+        ComponentCache cache = ComponentCache.overwritable(RETURN_LATEST);
+
+        String id = alphaNum(10);
+        String fileName = alphaNum(10);
+        String invariantId = aUniqueId();
+
+        Component oldComponent = aComponent(invariantId);
+        Component newComponent = aComponent(invariantId);
+
+        CacheEntry actual = cache
+            .put(id, fileName, oldComponent)
+            .put(id, fileName, newComponent)
+            .all().toList().head();
+
+        assertEquals(newComponent, actual.component);
+        assertEquals(1, cache.all().size());
+    }
+
+    private static Component aComponent() {
+        return aComponent(aUniqueId());
+    }
+
+    private static Component aComponent(String invariantId) {
+        Component component = TestDataUtils.aComponent();
+        component.setInvariantUUID(invariantId);
+        return component;
+    }
+}
+