[ONOS-7683] Add unit tests for a set of telemetry config classes

Change-Id: I73ad36e02044371a2fb87540e28ef2257a6dba92
diff --git a/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/config/TestDefaultGrpcTelemetryConfig.java b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/config/TestDefaultGrpcTelemetryConfig.java
new file mode 100644
index 0000000..ba66f36
--- /dev/null
+++ b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/config/TestDefaultGrpcTelemetryConfig.java
@@ -0,0 +1,107 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+package org.onosproject.openstacktelemetry.config;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.common.testing.EqualsTester;
+import org.junit.Before;
+import org.junit.Test;
+import org.onosproject.openstacktelemetry.api.config.GrpcTelemetryConfig;
+
+import java.util.Map;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * Unit tests for DefaultGrpcTelemetryConfig class.
+ */
+public final class TestDefaultGrpcTelemetryConfig {
+
+    private static final String IP_ADDRESS_1 = "10.10.10.1";
+    private static final String IP_ADDRESS_2 = "20.20.20.1";
+
+    private static final int PORT_1 = 80;
+    private static final int PORT_2 = 8080;
+
+    private static final int MSG_SIZE_1 = 1000;
+    private static final int MSG_SIZE_2 = 2000;
+
+    private static final boolean USE_PLAIN_TEXT_1 = true;
+    private static final boolean USE_PLAIN_TEXT_2 = true;
+
+    private static final Map<String, Object> CONFIG_MAP_1 =
+                                    ImmutableMap.of("key1", "value1");
+    private static final Map<String, Object> CONFIG_MAP_2 =
+                                    ImmutableMap.of("key2", "value2");
+
+    private GrpcTelemetryConfig config1;
+    private GrpcTelemetryConfig sameAsConfig1;
+    private GrpcTelemetryConfig config2;
+
+    @Before
+    public void setup() {
+
+        GrpcTelemetryConfig.Builder builder1 =
+                new DefaultGrpcTelemetryConfig.DefaultBuilder();
+        GrpcTelemetryConfig.Builder builder2 =
+                new DefaultGrpcTelemetryConfig.DefaultBuilder();
+        GrpcTelemetryConfig.Builder builder3 =
+                new DefaultGrpcTelemetryConfig.DefaultBuilder();
+
+        config1 = builder1
+                .withAddress(IP_ADDRESS_1)
+                .withPort(PORT_1)
+                .withMaxInboundMsgSize(MSG_SIZE_1)
+                .withUsePlaintext(USE_PLAIN_TEXT_1)
+                .withConfigMap(CONFIG_MAP_1)
+                .build();
+
+        sameAsConfig1 = builder2
+                .withAddress(IP_ADDRESS_1)
+                .withPort(PORT_1)
+                .withMaxInboundMsgSize(MSG_SIZE_1)
+                .withUsePlaintext(USE_PLAIN_TEXT_1)
+                .withConfigMap(CONFIG_MAP_1)
+                .build();
+
+        config2 = builder3
+                .withAddress(IP_ADDRESS_2)
+                .withPort(PORT_2)
+                .withMaxInboundMsgSize(MSG_SIZE_2)
+                .withUsePlaintext(USE_PLAIN_TEXT_2)
+                .withConfigMap(CONFIG_MAP_2)
+                .build();
+    }
+
+    @Test
+    public void testEquality() {
+        new EqualsTester()
+                .addEqualityGroup(config1, sameAsConfig1)
+                .addEqualityGroup(config2).testEquals();
+    }
+
+    @Test
+    public void testConstruction() {
+        GrpcTelemetryConfig config = config1;
+
+        assertThat(config.address(), is(IP_ADDRESS_1));
+        assertThat(config.port(), is(PORT_1));
+        assertThat(config.maxInboundMsgSize(), is(MSG_SIZE_1));
+        assertThat(config.usePlaintext(), is(USE_PLAIN_TEXT_1));
+        assertThat(config.configMap(), is(CONFIG_MAP_1));
+    }
+}