Added Packet composition test

Author: burdoto

src/test/java/de/kaleidox/test/vban/packet/VBANPacketTest.java

@@ -0,0 +1,69 @@
+package de.kaleidox.test.vban.packet;
+
+import de.kaleidox.vban.VBAN;
+import de.kaleidox.vban.exception.InvalidPacketAttributeException;
+import de.kaleidox.vban.packet.VBANPacket;
+import de.kaleidox.vban.packet.VBANPacketHead;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class VBANPacketTest {
+    private VBANPacket.Factory factory;
+
+    @Before
+    public void setUp() {
+        VBANPacketHead.Factory headFactory = VBANPacketHead.Factory.builder(VBAN.Protocol.TEXT)
+                .setSRValue(VBAN.BitsPerSecond.Bps150)
+                .setFormatValue(VBAN.CommandFormat.UTF8)
+                .setChannel((byte) 5)
+                .setSamples((byte) 8)
+                .setCodec(VBAN.Codec.VBCA)
+                .setStreamName("Textstream")
+                .build();
+
+        factory = VBANPacket.Factory.builder(VBAN.Protocol.TEXT)
+                .setHeadFactory(headFactory)
+                .build();
+    }
+
+    @Test
+    public void testHeadValidity() {
+        byte[] bytes = factory.create().getBytes();
+
+        assertEquals(bytes[0], 'V');
+        assertEquals(bytes[1], 'B');
+        assertEquals(bytes[2], 'A');
+        assertEquals(bytes[3], 'N');
+    }
+
+    @Test
+    public void testHeaderSize() {
+        byte[] bytes = new byte[VBANPacket.MAX_SIZE_WITHOUT_HEAD];
+
+        VBANPacket vbanPacket = factory.create();
+        vbanPacket.setData(bytes);
+
+        assertEquals(VBANPacket.MAX_SIZE, vbanPacket.getBytes().length);
+    }
+
+    @Test
+    public void testHeadDecomposing() throws InvalidPacketAttributeException {
+        byte[] bytes = new byte[VBANPacket.MAX_SIZE_WITHOUT_HEAD];
+        
+        VBANPacket generated = factory.create();
+        generated.setData(bytes);
+
+        VBANPacket.Decoded decoded = VBANPacket.decode(generated.getBytes());
+        VBANPacketHead.Decoded decodedHead = decoded.getHead();
+
+        assertEquals(VBAN.BitsPerSecond.Bps150, decodedHead.getDataRateValue());
+        assertEquals(VBAN.CommandFormat.UTF8, decodedHead.getFormat());
+        assertEquals(5, decodedHead.getChannel());
+        assertEquals(8, decodedHead.getSamples());
+        assertEquals(VBAN.Codec.VBCA, decodedHead.getCodec());
+        assertEquals("Textstream", decodedHead.getStreamName());
+    }
+}