Incoming events cache - do not load files, which are in progresshonolulu

- Implement singleton cache for events being processed
- Add JUnit tests
- Bump snapshot version 1.5.1 -> 1.5.2

Issue-ID: DCAEGEN2-2659
Signed-off-by: Joanna Jeremicz <joanna.jeremicz@nokia.com>
Change-Id: I79f32554a8c67d91d0d7b601bc8b060ff4984eab

1 files changed, 63 insertions, 0 deletions

diff --git a/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java b/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java
new file mode 100644
index 0000000..6a77e0f
--- /dev/null
+++ b/src/test/java/org/onap/dcaegen2/services/pmmapper/utils/IncomingEventsCacheTest.java
@@ -0,0 +1,63 @@
+/*-
+ * ============LICENSE_START=======================================================
+ *  Copyright (C) 2021 Nokia.
+ * ================================================================================
+ * 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.dcaegen2.services.pmmapper.utils;
+
+import org.junit.After;
+import org.junit.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class IncomingEventsCacheTest {
+
+    private static final String id1 = "123.dmaap-dr-node";
+    private static final String id2 = "987.dmaap-dr-node";
+
+    @After
+    public void resetCache() {
+        IncomingEventsCache cache = IncomingEventsCache.INSTANCE;
+        for(String id: cache.getCachedEvents()) {
+            cache.remove(id);
+        }
+    }
+
+    @Test
+    public void shouldContainEventAfterAddingItToCache() {
+        IncomingEventsCache eventsCache = IncomingEventsCache.INSTANCE;
+        eventsCache.add(id1);
+        assertEquals(1, IncomingEventsCache.INSTANCE.getCachedEvents().size());
+        assertTrue(IncomingEventsCache.INSTANCE.getCachedEvents().contains(id1));
+    }
+
+    @Test
+    public void shouldRemoveEventFromCache() {
+        IncomingEventsCache eventsCache = IncomingEventsCache.INSTANCE;
+
+        assertEquals(0, IncomingEventsCache.INSTANCE.getCachedEvents().size());
+        eventsCache.add(id1);
+        eventsCache.add(id1);
+        eventsCache.add(id2);
+        assertEquals(2, IncomingEventsCache.INSTANCE.getCachedEvents().size());
+        eventsCache.remove(id1);
+        assertEquals(1, IncomingEventsCache.INSTANCE.getCachedEvents().size());
+        assertTrue(IncomingEventsCache.INSTANCE.getCachedEvents().contains(id2));
+    }
+}