1 files changed, 69 insertions, 0 deletions
diff --git a/src/test/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducerTest.java b/src/test/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducerTest.java
new file mode 100644
index 00000000..d085eb13
--- /dev/null
+++ b/src/test/java/org/onap/dcae/multiplestreamreducer/MultipleStreamReducerTest.java
@@ -0,0 +1,69 @@
+/*
+ * ============LICENSE_START=======================================================
+ * VES Collector
+ * ================================================================================
+ * Copyright (C) 2021 Nokia. 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.dcae.multiplestreamreducer;
+
+import io.vavr.collection.HashMap;
+import io.vavr.collection.Map;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class MultipleStreamReducerTest {
+
+    private final MultipleStreamReducer multipleStreamReducer = new MultipleStreamReducer();
+    private final Map<String, String[]> domainToStreams = HashMap.of(
+            "fault", new String[]{"ves-fault", "stream1", "stream2"},
+            "log", new String[]{"ves-syslog", "stream3", "stream4", "stream5"},
+            "test", new String[]{"stream6"}
+    );
+
+    @Test
+    void shouldReduceStreamsToTheFirstOne() {
+        //given
+        Map<String, String> expected = HashMap.of(
+                "fault", "ves-fault",
+                "log", "ves-syslog",
+                "test", "stream6"
+        );
+
+        //when
+        final Map<String, String> domainToStreamsAfterReduce = multipleStreamReducer.reduce(domainToStreams);
+
+        //then
+        assertEquals(expected, domainToStreamsAfterReduce);
+    }
+
+    @Test
+    void shouldReturnInfoAboutDomainToStreamsConfig() {
+        //given
+        final Map<String, String> domainToStreamsAfterReduce = multipleStreamReducer.reduce(domainToStreams);
+        String expectedRedundantStreamsInfo =
+                "Domain: fault has active stream: ves-fault\n" +
+                "Domain: log has active stream: ves-syslog\n" +
+                "Domain: test has active stream: stream6\n";
+
+        //when
+        final String domainToStreamsConfigInfo = multipleStreamReducer.getDomainToStreamsInfo(domainToStreamsAfterReduce);
+
+        //then
+        assertEquals(expectedRedundantStreamsInfo, domainToStreamsConfigInfo);
+    }
+
+}