RequestToJoinEnum contains an int instead of a byte.

Added requestToJoin and joinAcceptance encoding functions to RaceVisionByteEncoder.
Implemented JoinAcceptanceDecoder.
Implemented RequestToJoinDecoder.
Added tests for encoding/decoding RequestToJoin and JoinAcceptance messages.

issue #35
#story[1095]

racevisionGame/src/main/java/network/MessageDecoders/JoinAcceptanceDecoder.java

@@ -0,0 +1,70 @@
+package network.MessageDecoders;
+
+
+import network.Messages.Enums.JoinAcceptanceEnum;
+import network.Messages.JoinAcceptance;
+import network.Utils.ByteConverter;
+
+import java.util.Arrays;
+
+/**
+ * Decoder for {@link JoinAcceptance} messages.
+ */
+public class JoinAcceptanceDecoder {
+
+    /**
+     * The encoded message.
+     */
+    private byte[] encodedMessage;
+
+    /**
+     * The decoded message.
+     */
+    private JoinAcceptance message;
+
+
+    /**
+     * Constructs a decoder to decode a given message.
+     * @param encodedMessage The message to decode.
+     */
+    public JoinAcceptanceDecoder(byte[] encodedMessage) {
+        this.encodedMessage = encodedMessage;
+
+        decode();
+    }
+
+
+    /**
+     * Decodes the contained message.
+     */
+    private void decode() {
+
+        //SourceID is first four bytes.
+        byte[] sourceIdBytes = Arrays.copyOfRange(encodedMessage, 0, 4);
+
+        //Next byte is acceptance type.
+        byte[] acceptanceBytes = Arrays.copyOfRange(encodedMessage, 4, 5);
+
+
+
+        //SourceID is an int.
+        int sourceID = ByteConverter.bytesToInt(sourceIdBytes);
+
+        //Acceptance enum is a byte.
+        JoinAcceptanceEnum acceptanceType = JoinAcceptanceEnum.fromByte(acceptanceBytes[0]);
+
+
+        message = new JoinAcceptance(acceptanceType, sourceID);
+    }
+
+
+    /**
+     * Returns the decoded message.
+     * @return The decoded message.
+     */
+    public JoinAcceptance getMessage() {
+        return message;
+    }
+
+
+}

racevisionGame/src/main/java/network/MessageDecoders/RequestToJoinDecoder.java

@@ -0,0 +1,62 @@
+package network.MessageDecoders;
+
+
+import network.Messages.Enums.RequestToJoinEnum;
+import network.Messages.RequestToJoin;
+import network.Utils.ByteConverter;
+
+import java.util.Arrays;
+
+/**
+ * Decoder for {@link network.Messages.RequestToJoin} messages.
+ */
+public class RequestToJoinDecoder {
+
+    /**
+     * The encoded message.
+     */
+    private byte[] encodedRequest;
+
+    /**
+     * The decoded message.
+     */
+    private RequestToJoin message;
+
+    /**
+     * Constructs a decoder to decode a given message.
+     * @param encodedRequest The message to decode.
+     */
+    public RequestToJoinDecoder(byte[] encodedRequest) {
+        this.encodedRequest = encodedRequest;
+
+        decode();
+    }
+
+
+    /**
+     * Decodes the contained message.
+     */
+    private void decode() {
+
+        //Request type is first four bytes.
+        byte[] requestTypeBytes = Arrays.copyOfRange(encodedRequest, 0, 4);
+
+        //Request type is an integral type.
+        int requestTypeInt = ByteConverter.bytesToInt(requestTypeBytes);
+        RequestToJoinEnum requestType = RequestToJoinEnum.fromInt(requestTypeInt);
+
+
+        message = new RequestToJoin(requestType);
+    }
+
+
+    /**
+     * Returns the decoded message.
+     * @return The decoded message.
+     */
+    public RequestToJoin getMessage() {
+        return message;
+    }
+
+
+}

racevisionGame/src/main/java/network/MessageEncoders/RaceVisionByteEncoder.java

@@ -346,4 +346,42 @@ public class RaceVisionByteEncoder {
         return result;
     }
 
+
+    /**
+     * Encodes a {@link RequestToJoin} message.
+     * @param requestToJoin Message to encode.
+     * @return Encoded message.
+     */
+    public static byte[] requestToJoin(RequestToJoin requestToJoin) {
+
+        ByteBuffer requestToJoinBuffer = ByteBuffer.allocate(4);
+
+        requestToJoinBuffer.put(intToBytes(requestToJoin.getRequestType().getValue(), 4));
+
+        byte [] result = requestToJoinBuffer.array();
+
+        return result;
+
+    }
+
+    /**
+     * Encodes a {@link JoinAcceptance} message.
+     * @param joinAcceptance Message to encode.
+     * @return Encoded message.
+     */
+    public static byte[] joinAcceptance(JoinAcceptance joinAcceptance) {
+
+        //Message is 5 bytes.
+        ByteBuffer joinAcceptanceBuffer = ByteBuffer.allocate(5);
+
+        //Source ID is first four bytes.
+        joinAcceptanceBuffer.put(intToBytes(joinAcceptance.getSourceID(), 4));
+        //Acceptance type is next byte.
+        joinAcceptanceBuffer.put(intToBytes(joinAcceptance.getAcceptanceType().getValue(), 1));
+
+        byte [] result = joinAcceptanceBuffer.array();
+
+        return result;
+
+    }
 }

racevisionGame/src/main/java/network/Messages/Enums/RequestToJoinEnum.java

@@ -35,22 +35,22 @@ public enum RequestToJoinEnum {
     /**
      * Primitive value of the enum.
      */
-    private byte value;
+    private int value;
 
 
     /**
-     * Ctor. Creates a RequestToJoinEnum from a given primitive integer value, cast to a byte.
-     * @param value Integer, which is cast to byte, to construct from.
+     * Ctor. Creates a RequestToJoinEnum from a given int value.
+     * @param value Integer to construct from.
      */
     private RequestToJoinEnum(int value) {
-        this.value = (byte) value;
+        this.value = value;
     }
 
     /**
      * Returns the primitive value of the enum.
      * @return Primitive value of the enum.
      */
-    public byte getValue() {
+    public int getValue() {
         return value;
     }
 
@@ -58,32 +58,32 @@ public enum RequestToJoinEnum {
 
 
     /**
-     * Stores a mapping between Byte values and RequestToJoinEnum values.
+     * Stores a mapping between Integer values and RequestToJoinEnum values.
      */
-    private static final Map<Byte, RequestToJoinEnum> byteToRequestMap = new HashMap<>();
+    private static final Map<Integer, RequestToJoinEnum> intToRequestMap = new HashMap<>();
 
 
     /*
-      Static initialization block. Initializes the byteToRequestMap.
+      Static initialization block. Initializes the intToRequestMap.
      */
     static {
         for (RequestToJoinEnum type : RequestToJoinEnum.values()) {
-            RequestToJoinEnum.byteToRequestMap.put(type.value, type);
+            RequestToJoinEnum.intToRequestMap.put(type.value, type);
         }
     }
 
 
     /**
-     * Returns the enumeration value which corresponds to a given byte value.
-     * @param requestToJoinEnum Byte value to convert to a RequestToJoinEnum value.
-     * @return The RequestToJoinEnum value which corresponds to the given byte value.
+     * Returns the enumeration value which corresponds to a given int value.
+     * @param requestToJoinEnum int value to convert to a RequestToJoinEnum value.
+     * @return The RequestToJoinEnum value which corresponds to the given int value.
      */
-    public static RequestToJoinEnum fromByte(byte requestToJoinEnum) {
+    public static RequestToJoinEnum fromInt(int requestToJoinEnum) {
         //Gets the corresponding MessageType from the map.
-        RequestToJoinEnum type = RequestToJoinEnum.byteToRequestMap.get(requestToJoinEnum);
+        RequestToJoinEnum type = RequestToJoinEnum.intToRequestMap.get(requestToJoinEnum);
 
         if (type == null) {
-            //If the byte value wasn't found, return the NOT_A_REQUEST_TYPE RequestToJoinEnum.
+            //If the int value wasn't found, return the NOT_A_REQUEST_TYPE RequestToJoinEnum.
             return RequestToJoinEnum.NOT_A_REQUEST_TYPE;
         } else {
             //Otherwise, return the RequestToJoinEnum.

racevisionGame/src/test/java/network/MessageDecoders/JoinAcceptanceDecoderTest.java

@@ -0,0 +1,99 @@
+package network.MessageDecoders;
+
+import network.MessageEncoders.RaceVisionByteEncoder;
+import network.Messages.Enums.JoinAcceptanceEnum;
+import network.Messages.JoinAcceptance;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+
+/**
+ * Test for the {@link network.Messages.JoinAcceptance} encoder and decoder
+ */
+public class JoinAcceptanceDecoderTest {
+
+
+    /**
+     * Encodes and decodes a given message.
+     * @param message Message to encode/decode.
+     * @return The decoded message.
+     */
+    private JoinAcceptance encodeDecodeMessage(JoinAcceptance message) {
+
+        //Encode.
+        byte [] testEncodedMessage = RaceVisionByteEncoder.joinAcceptance(message);
+
+        //Decode.
+        JoinAcceptanceDecoder testDecoder = new JoinAcceptanceDecoder(testEncodedMessage);
+        JoinAcceptance decodedMessage = testDecoder.getMessage();
+
+        return decodedMessage;
+    }
+
+
+    /**
+     * Tests if a specific acceptance type message can be encoded and decoded correctly.
+     * @param type The type of acceptance response.
+     * @param sourceID The source ID to assign.
+     */
+    private void responseTypeTest(JoinAcceptanceEnum type, int sourceID) throws Exception {
+
+        //Prepare message.
+        JoinAcceptance beforeMessage = new JoinAcceptance(type, sourceID);
+
+
+        //Encode/decode it.
+        JoinAcceptance afterMessage = encodeDecodeMessage(beforeMessage);
+
+
+        //Compare.
+        assertEquals(beforeMessage.getAcceptanceType().getValue(), afterMessage.getAcceptanceType().getValue());
+        assertEquals(beforeMessage.getSourceID(), afterMessage.getSourceID());
+
+    }
+
+
+    /**
+     * Tests if a join success message, with a source ID, can be encoded and decoded correctly.
+     */
+    @Test
+    public void joinSuccessSourceIDTest() throws Exception {
+        responseTypeTest(JoinAcceptanceEnum.JOIN_SUCCESSFUL, 12345);
+    }
+
+    /**
+     * Tests if a join success message, with no source ID, can be encoded and decoded correctly.
+     */
+    @Test
+    public void joinSuccessNoSourceIDTest() throws Exception {
+        responseTypeTest(JoinAcceptanceEnum.JOIN_SUCCESSFUL, 0);
+    }
+
+    /**
+     * Tests if a participants full message can be encoded and decoded correctly.
+     */
+    @Test
+    public void participantFullTest() throws Exception {
+        responseTypeTest(JoinAcceptanceEnum.RACE_PARTICIPANTS_FULL, 0);
+    }
+
+    /**
+     * Tests if a ghosts full message can be encoded and decoded correctly.
+     */
+    @Test
+    public void ghostFullTest() throws Exception {
+        responseTypeTest(JoinAcceptanceEnum.GHOST_PARTICIPANTS_FULL, 0);
+    }
+
+    /**
+     * Tests if a server full message can be encoded and decoded correctly.
+     */
+    @Test
+    public void serverFullTest() throws Exception {
+        responseTypeTest(JoinAcceptanceEnum.SERVER_FULL, 0);
+    }
+
+
+
+}

racevisionGame/src/test/java/network/MessageDecoders/RequestToJoinDecoderTest.java

@@ -0,0 +1,82 @@
+package network.MessageDecoders;
+
+import network.MessageEncoders.RaceVisionByteEncoder;
+import network.Messages.Enums.RequestToJoinEnum;
+import network.Messages.RequestToJoin;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+
+/**
+ * Test for the RequestToJoin encoder and decoder
+ */
+public class RequestToJoinDecoderTest {
+
+
+    /**
+     * Encodes and decodes a given message.
+     * @param message Message to encode/decode.
+     * @return The decoded message.
+     */
+    private RequestToJoin encodeDecodeMessage(RequestToJoin message) {
+
+        //Encode.
+        byte [] testEncodedMessage = RaceVisionByteEncoder.requestToJoin(message);
+
+        //Decode.
+        RequestToJoinDecoder testDecoder = new RequestToJoinDecoder(testEncodedMessage);
+        RequestToJoin decodedMessage = testDecoder.getMessage();
+
+        return decodedMessage;
+    }
+
+
+    /**
+     * Tests if a specific request type message can be encoded and decoded correctly.
+     * @param type The type of join request.
+     */
+    private void requestTypeTest(RequestToJoinEnum type) throws Exception {
+
+        //Prepare message.
+        RequestToJoin beforeMessage = new RequestToJoin(type);
+
+
+        //Encode/decode it.
+        RequestToJoin afterMessage = encodeDecodeMessage(beforeMessage);
+
+
+        //Compare.
+        assertEquals(beforeMessage.getRequestType().getValue(), afterMessage.getRequestType().getValue());
+
+    }
+
+
+    /**
+     * Tests if a spectator request message can be encoded and decoded correctly.
+     */
+    @Test
+    public void spectatorTest() throws Exception {
+        requestTypeTest(RequestToJoinEnum.SPECTATOR);
+    }
+
+    /**
+     * Tests if a participant request message can be encoded and decoded correctly.
+     */
+    @Test
+    public void participantTest() throws Exception {
+        requestTypeTest(RequestToJoinEnum.PARTICIPANT);
+    }
+
+    /**
+     * Tests if a ghost request message can be encoded and decoded correctly.
+     */
+    @Test
+    public void ghostTest() throws Exception {
+        requestTypeTest(RequestToJoinEnum.GHOST);
+    }
+
+
+
+}