ONOS-4083,ONOS-4084:JUNIT for ISIS PDU TLV Data Structures

Change-Id: I0849d87ad1c7f9a8e08aabebd547dfd2dfde49df
diff --git a/protocols/isis/isisio/src/test/java/org/onosproject/isis/io/isispacket/tlv/TlvHeaderTest.java b/protocols/isis/isisio/src/test/java/org/onosproject/isis/io/isispacket/tlv/TlvHeaderTest.java
new file mode 100644
index 0000000..22371d5
--- /dev/null
+++ b/protocols/isis/isisio/src/test/java/org/onosproject/isis/io/isispacket/tlv/TlvHeaderTest.java
@@ -0,0 +1,124 @@
+/*
+ * 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.isis.io.isispacket.tlv;
+
+import org.easymock.EasyMock;
+import org.jboss.netty.buffer.ChannelBuffer;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+/**
+ * Unit test class for TlvHeader.
+ */
+public class TlvHeaderTest {
+
+    private TlvHeader tlvHeader;
+    private int result;
+    private ChannelBuffer channelBuffer;
+
+    @Before
+    public void setUp() throws Exception {
+        tlvHeader = new TlvHeader();
+        channelBuffer = EasyMock.createMock(ChannelBuffer.class);
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        tlvHeader = null;
+        channelBuffer = null;
+    }
+
+    /**
+     * Tests tlvLength() getter method.
+     */
+    @Test
+    public void testTlvLength() throws Exception {
+        tlvHeader.setTlvLength(1);
+        result = tlvHeader.tlvLength();
+        assertThat(result, is(1));
+    }
+
+    /**
+     * Tests tlvLength() setter method.
+     */
+    @Test
+    public void testSetTlvLength() throws Exception {
+        tlvHeader.setTlvLength(1);
+        result = tlvHeader.tlvLength();
+        assertThat(result, is(1));
+    }
+
+    /**
+     * Tests tlvType() getter method.
+     */
+    @Test
+    public void testTlvType() throws Exception {
+        tlvHeader.setTlvType(1);
+        result = tlvHeader.tlvType();
+        assertThat(result, is(1));
+    }
+
+    /**
+     * Tests tlvType() setter method.
+     */
+    @Test
+    public void testSetTlvType() throws Exception {
+        tlvHeader.setTlvType(1);
+        result = tlvHeader.tlvType();
+        assertThat(result, is(1));
+    }
+
+    /**
+     * Tests readFrom() method.
+     */
+    @Test
+    public void testReadFrom() throws Exception {
+        tlvHeader.readFrom(channelBuffer);
+        assertThat(tlvHeader, is(notNullValue()));
+    }
+
+    /**
+     * Tests asBytes() getter method.
+     */
+    @Test
+    public void testAsBytes() throws Exception {
+        assertThat(tlvHeader.asBytes(), is(nullValue()));
+    }
+
+    /**
+     * Tests tlvHeaderAsByteArray() method.
+     */
+    @Test
+    public void testTlvHeaderAsByteArray() throws Exception {
+        tlvHeader.setTlvLength(1);
+        tlvHeader.setTlvType(1);
+        assertThat(tlvHeader.tlvHeaderAsByteArray(), is(notNullValue()));
+        assertThat(tlvHeader.tlvType(), is(1));
+        assertThat(tlvHeader.tlvLength(), is(1));
+    }
+
+    /**
+     * Tests toString() getter method.
+     */
+    @Test
+    public void testToString() throws Exception {
+        assertThat(tlvHeader.toString(), is(notNullValue()));
+    }
+}
\ No newline at end of file