[ONOS-4941][ONOS-4883][ONOS-4979]Grouping and uses interfile linking issue + defect fix

Change-Id: I5e8145f05d3ef570d4ecbbe885c93de172de0ea3
diff --git a/plugin/src/test/java/org/onosproject/yangutils/parser/impl/listeners/CompilerAnnotationListenerTest.java b/plugin/src/test/java/org/onosproject/yangutils/parser/impl/listeners/CompilerAnnotationListenerTest.java
new file mode 100644
index 0000000..cbc4009
--- /dev/null
+++ b/plugin/src/test/java/org/onosproject/yangutils/parser/impl/listeners/CompilerAnnotationListenerTest.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2016-present Open Networking Laboratory
+ *
+ * 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.yangutils.parser.impl.listeners;
+
+import java.io.IOException;
+import org.junit.Test;
+import org.onosproject.yangutils.datamodel.YangAppDataStructure;
+import org.onosproject.yangutils.datamodel.YangCompilerAnnotation;
+import org.onosproject.yangutils.datamodel.YangDataStructure;
+import org.onosproject.yangutils.datamodel.YangModule;
+import org.onosproject.yangutils.datamodel.YangNode;
+import org.onosproject.yangutils.datamodel.YangNodeType;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.parser.impl.YangUtilsParserManager;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.core.Is.is;
+
+/**
+ * Test cases for compiler annotation listener.
+ */
+public class CompilerAnnotationListenerTest {
+
+    private final YangUtilsParserManager manager = new YangUtilsParserManager();
+
+    /**
+     * Checks valid compiler annotation statements.
+     */
+    @Test
+    public void processValidCompilerAnnotation() throws IOException, ParserException {
+
+        YangNode node = manager.getDataModel("src/test/resources/ValidCompilerAnnotation.yang");
+
+        // Check whether the data model tree returned is of type module.
+        assertThat((node instanceof YangModule), is(true));
+
+        // Check whether the node type is set properly to module.
+        assertThat(node.getNodeType(), is(YangNodeType.MODULE_NODE));
+
+        // Check whether the module name is set correctly.
+        YangModule yangNode = (YangModule) node;
+        assertThat(yangNode.getName(), is("event"));
+
+        YangCompilerAnnotation compilerAnnotation = yangNode.getCompilerAnnotationList()
+                .iterator().next();
+        assertThat(compilerAnnotation.getPrefix(), is("ca"));
+        assertThat(compilerAnnotation.getPath(), is("/candidate-servers/server"));
+
+        YangAppDataStructure appDataStructure = compilerAnnotation.getYangAppDataStructure();
+        assertThat(appDataStructure.getPrefix(), is("abc"));
+        assertThat(appDataStructure.getDataStructure(), is(YangDataStructure.MAP));
+
+        assertThat(appDataStructure.getKeyList().iterator().next(), is("name"));
+    }
+}