[ONOS-4583] Union defect fix.

Change-Id: Ic31866b9a1b7bd5d8209d5d22f4292ab9c79a118
diff --git a/utils/yangutils/plugin/src/test/java/org/onosproject/yangutils/plugin/manager/TypeDefTranslatorTest.java b/utils/yangutils/plugin/src/test/java/org/onosproject/yangutils/plugin/manager/TypeDefTranslatorTest.java
new file mode 100644
index 0000000..d433d41
--- /dev/null
+++ b/utils/yangutils/plugin/src/test/java/org/onosproject/yangutils/plugin/manager/TypeDefTranslatorTest.java
@@ -0,0 +1,58 @@
+/*
+ * 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.plugin.manager;
+
+import java.io.IOException;
+
+import org.apache.maven.plugin.MojoExecutionException;
+import org.junit.Test;
+import org.onosproject.yangutils.parser.exceptions.ParserException;
+import org.onosproject.yangutils.utils.io.impl.YangFileScanner;
+import org.onosproject.yangutils.utils.io.impl.YangPluginConfig;
+
+import static org.onosproject.yangutils.utils.io.impl.YangIoUtils.deleteDirectory;
+
+/**
+ * Unit test case for typedef translator.
+ */
+public class TypeDefTranslatorTest {
+
+    private final YangUtilManager utilManager = new YangUtilManager();
+
+    /**
+     * Checks typedef translation should not result in any exception.
+     *
+     * @throws MojoExecutionException
+     */
+    @Test
+    public void processTypeDefTranslator() throws IOException, ParserException, MojoExecutionException {
+
+        String searchDir = "src/test/resources/typedefTranslator";
+        utilManager.createYangFileInfoSet(YangFileScanner.getYangFiles(searchDir));
+        utilManager.parseYangFileInfoSet();
+        utilManager.createYangNodeSet();
+        utilManager.resolveDependenciesUsingLinker();
+
+        YangPluginConfig yangPluginConfig = new YangPluginConfig();
+        yangPluginConfig.setCodeGenDir("target/typedefTranslator/");
+        yangPluginConfig.setManagerCodeGenDir("target/typedefTranslator/");
+        utilManager.translateToJava(yangPluginConfig);
+
+        deleteDirectory("target/typedefTranslator/");
+    }
+
+}