org.eclipse.lsp4j.jsonrpc.json.MessageJsonHandler Java Examples

@Test(expected=JsonRpcException.class)
public void testIOException() throws Throwable {
	try {
		executorService.submit(() -> {
			InputStream input = new InputStream() {
				@Override
				public int read() throws IOException {
					throw new SocketException("Permission denied: connect");
				}
			};
			MessageJsonHandler jsonHandler = new MessageJsonHandler(Collections.emptyMap());
			StreamMessageProducer messageProducer = new StreamMessageProducer(input, jsonHandler);
			messageProducer.listen(message -> {});
			messageProducer.close();
		}).get(TIMEOUT, TimeUnit.MILLISECONDS);
	} catch (ExecutionException e) {
		throw e.getCause();
	}
}
 

@Test
public void testEnumParam() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<MyEnum>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [1, 2, 3],\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(Arrays.asList(MyEnum.A, MyEnum.B, MyEnum.C),
			parameters);
}
 

@Test
public void testMultiParamsParsing_03() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<String>>() {}.getType(),
			new TypeToken<List<Integer>>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [[\"foo\", \"bar\"], [1, 2], {\"uri\": \"dummy://mymodel.mydsl\"}],\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(3, parameters.size());
	Assert.assertEquals("[foo, bar]", parameters.get(0).toString());
	Assert.assertEquals("[1, 2]", parameters.get(1).toString());
	Assert.assertTrue("" + parameters.get(2).getClass(), parameters.get(2) instanceof Location);
}
 

@Test
public void testMultiParamsParsing_04() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<String>>() {}.getType(),
			new TypeToken<List<Integer>>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [[\"foo\", \"bar\"], [1, 2]],\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(3, parameters.size());
	Assert.assertEquals("[foo, bar]", parameters.get(0).toString());
	Assert.assertEquals("[1, 2]", parameters.get(1).toString());
	Assert.assertNull(parameters.get(2));
}
 

@Test
public void testMultiParamsParsing_02() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<String>() {}.getType(),
			new TypeToken<Integer>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [\"foo\", 2],\n"
			+ "\"method\":\"bar\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof JsonArray);
}
 

@Test
public void testMultiParamsParsing_01() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<String>() {}.getType(),
			new TypeToken<Integer>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [\"foo\", 2],\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(2, parameters.size());
	Assert.assertEquals("foo", parameters.get(0));
	Assert.assertEquals(2, parameters.get(1));
}
 

@Test
public void testEnumParamNull() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<MyEnum>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": [1, 2, null],\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(Arrays.asList(MyEnum.A, MyEnum.B, null),
			parameters);
}
 

@Test
public void testRawMultiParamsParsing_04() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<String>>() {}.getType(),
			new TypeToken<List<Integer>>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"foo\",\n"
			+ "\"params\": [[\"foo\", \"bar\"], [1, 2]]\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(3, parameters.size());
	Assert.assertEquals("[foo, bar]", parameters.get(0).toString());
	Assert.assertEquals("[1, 2]", parameters.get(1).toString());
	Assert.assertNull(parameters.get(2));
}
 

@Test
public void testRequest_AllOrders() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {
			}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	String[] properties = new String[] {
			"\"jsonrpc\":\"2.0\"",
			"\"id\":2",
			"\"method\":\"foo\"",
			"\"params\": {\"uri\": \"dummy://mymodel.mydsl\"}"
			};
	testAllPermutations(properties, json -> {
		RequestMessage message = (RequestMessage) handler.parseMessage(json);
		Object params = message.getParams();
		Class<? extends Object> class1 = params.getClass();
		Assert.assertEquals(Location.class, class1);
		Assert.assertEquals("dummy://mymodel.mydsl", ((Location)params).uri);
	});
}
 

@Test
public void testNormalResponse_AllOrders() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Location>() {}.getType(),
			new TypeToken<Void>() {
			}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	String[] properties = new String[] {
			"\"jsonrpc\":\"2.0\"",
			"\"id\":2",
			"\"result\": {\"uri\": \"dummy://mymodel.mydsl\"}"
			};
	testAllPermutations(properties, json -> {
		ResponseMessage message = (ResponseMessage) handler.parseMessage(json);
		Object result = message.getResult();
		Class<? extends Object> class1 = result.getClass();
		Assert.assertEquals(Location.class, class1);
		Assert.assertEquals("dummy://mymodel.mydsl", ((Location)result).uri);
		Assert.assertNull(message.getError());
	});
}
 

@Test
public void testErrorResponse_AllOrders() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Location>() {}.getType(),
			new TypeToken<Void>() {
			}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	String[] properties = new String[] {
			"\"jsonrpc\":\"2.0\"",
			"\"id\":2",
			"\"message\": \"failed\"",
			"\"error\": {\"code\": 123456, \"message\": \"failed\", \"data\": {\"uri\": \"failed\"}}"
			};
	testAllPermutations(properties, json -> {
		ResponseMessage message = (ResponseMessage) handler.parseMessage(json);
		Assert.assertEquals("failed", message.getError().getMessage());
		Object data = message.getError().getData();
		JsonObject expected = new JsonObject();
		expected.addProperty("uri", "failed");
		Assert.assertEquals(expected, data);
		Assert.assertNull(message.getResult());
	});
}
 

@Test
public void testNotification_AllOrders() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {
			}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	String[] properties = new String[] {
			"\"jsonrpc\":\"2.0\"",
			"\"method\":\"foo\"",
			"\"params\": {\"uri\": \"dummy://mymodel.mydsl\"}"
			};
	testAllPermutations(properties, json -> {
		NotificationMessage message = (NotificationMessage) handler.parseMessage(json);
		Object params = message.getParams();
		Class<? extends Object> class1 = params.getClass();
		Assert.assertEquals(Location.class, class1);
		Assert.assertEquals("dummy://mymodel.mydsl", ((Location)params).uri);
	});
}
 

@Test
public void testResponseErrorData() {
	MessageJsonHandler handler = new MessageJsonHandler(Collections.emptyMap());
	ResponseMessage message = (ResponseMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"error\": { \"code\": -32001, \"message\": \"foo\",\n"
			+ "    \"data\": { \"uri\": \"file:/foo\", \"version\": 5, \"list\": [\"a\", \"b\", \"c\"] }\n"
			+ "  }\n"
			+ "}");
	ResponseError error = message.getError();
	Assert.assertTrue("Expected a JsonObject in error.data", error.getData() instanceof JsonObject);
	JsonObject data = (JsonObject) error.getData();
	Assert.assertEquals("file:/foo", data.get("uri").getAsString());
	Assert.assertEquals(5, data.get("version").getAsInt());
	JsonArray list = data.get("list").getAsJsonArray();
	Assert.assertEquals("a", list.get(0).getAsString());
	Assert.assertEquals("b", list.get(1).getAsString());
	Assert.assertEquals("c", list.get(2).getAsString());
}
 

@Test
public void testRawMultiParamsParsing_02() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<String>() {}.getType(),
			new TypeToken<Integer>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"bar\",\n"
			+ "\"params\": [\"foo\", 2]\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof JsonArray);
}
 

@Test
public void testParamsParsing_04() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"bar\",\n"
			+ "\"params\": null\n"
			+ "}");
	Assert.assertEquals(null, message.getParams());
}
 

@SuppressWarnings({ "unchecked" })
@Test
public void testParseList_01() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<List<? extends Entry>>() {}.getType(),
			new TypeToken<List<? extends Entry>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id)->"foo");
	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n" 
			+ " \"result\": [\n"
			+ "  {\"name\":\"$schema\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":1,\"character\":3},\"end\":{\"line\":1,\"character\":55}}}},\n"
			+ "  {\"name\":\"type\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":2,\"character\":3},\"end\":{\"line\":2,\"character\":19}}}},\n"
			+ "  {\"name\":\"title\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":3,\"character\":3},\"end\":{\"line\":3,\"character\":50}}}},\n"
			+ "  {\"name\":\"additionalProperties\",\"kind\":17,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":4,\"character\":4},\"end\":{\"line\":4,\"character\":32}}}},\n"
			+ "  {\"name\":\"properties\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":5,\"character\":3},\"end\":{\"line\":5,\"character\":20}}}}\n"
			+ "]}");
	List<? extends Entry> result = (List<? extends Entry>) ((ResponseMessage) message).getResult();
	Assert.assertEquals(5, result.size());
	for (Entry e : result) {
		Assert.assertTrue(e.location.uri, e.location.uri.startsWith("file:/home/mistria"));
	}
}
 

@SuppressWarnings({ "unchecked" })
@Test
public void testParseList_02() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Set<Entry>>() {}.getType(),
			new TypeToken<Set<Entry>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id)->"foo");
	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n" 
			+ " \"result\": [\n"
			+ "  {\"name\":\"$schema\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":1,\"character\":3},\"end\":{\"line\":1,\"character\":55}}}},\n"
			+ "  {\"name\":\"type\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":2,\"character\":3},\"end\":{\"line\":2,\"character\":19}}}},\n"
			+ "  {\"name\":\"title\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":3,\"character\":3},\"end\":{\"line\":3,\"character\":50}}}},\n"
			+ "  {\"name\":\"additionalProperties\",\"kind\":17,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":4,\"character\":4},\"end\":{\"line\":4,\"character\":32}}}},\n"
			+ "  {\"name\":\"properties\",\"kind\":15,\"location\":{\"uri\":\"file:/home/mistria/runtime-EclipseApplication-with-patch/EclipseConEurope/something.json\",\"range\":{\"start\":{\"line\":5,\"character\":3},\"end\":{\"line\":5,\"character\":20}}}}\n"
			+ "]}");
	Set<Entry> result = (Set<Entry>) ((ResponseMessage)message).getResult();
	Assert.assertEquals(5, result.size());
	for (Entry e : result) {
		Assert.assertTrue(e.location.uri, e.location.uri.startsWith("file:/home/mistria"));
	}
}
 

/**
 * Cancellation is handled inside this class and not forwarded to the local endpoint.
 * 
 * @return {@code true} if the given message is a cancellation notification,
 *         {@code false} if it can be handled by the local endpoint
 */
protected boolean handleCancellation(NotificationMessage notificationMessage) {
	if (MessageJsonHandler.CANCEL_METHOD.getMethodName().equals(notificationMessage.getMethod())) {
		Object cancelParams = notificationMessage.getParams();
		if (cancelParams != null) {
			if (cancelParams instanceof CancelParams) {
				synchronized (receivedRequestMap) {
					String id = ((CancelParams) cancelParams).getId();
					CompletableFuture<?> future = receivedRequestMap.get(id);
					if (future != null)
						future.cancel(true);
					else
						LOG.warning("Unmatched cancel notification for request id " + id);
				}
				return true;
			} else {
				LOG.warning("Cancellation support is disabled, since the '" + MessageJsonHandler.CANCEL_METHOD.getMethodName() + "' method has been registered explicitly.");
			}
		} else {
			LOG.warning("Missing 'params' attribute of cancel notification.");
		}
	}
	return false;
}
 

@SuppressWarnings({ "unchecked" })
@Test
public void testEither_02() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Either<MyEnum, Map<String,String>>>() {}.getType(),
			new TypeToken<Object>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"result\": 2\n"
			+ "}");
	Either<MyEnum, List<Map<String, String>>> result = (Either<MyEnum, List<Map<String,String>>>) ((ResponseMessage)message).getResult();
	Assert.assertTrue(result.isLeft());
	Assert.assertEquals(MyEnum.B, result.getLeft());
}
 

@Test
public void testParamsParsing_01() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"params\": {\"uri\": \"dummy://mymodel.mydsl\"},\n"
			+ "\"method\":\"foo\"\n"
			+ "}");
	Assert.assertEquals(Location.class, message.getParams().getClass());
}
 

public Launcher<T> create() {
	// Validate input
	if (input == null)
		throw new IllegalStateException("Input stream must be configured.");
	if (output == null)
		throw new IllegalStateException("Output stream must be configured.");
	if (localServices == null)
		throw new IllegalStateException("Local service must be configured.");
	if (remoteInterfaces == null)
		throw new IllegalStateException("Remote interface must be configured.");
	
	// Create the JSON handler, remote endpoint and remote proxy
	MessageJsonHandler jsonHandler = createJsonHandler();
	RemoteEndpoint remoteEndpoint = createRemoteEndpoint(jsonHandler);
	T remoteProxy = createProxy(remoteEndpoint);
	
	// Create the message processor
	StreamMessageProducer reader = new StreamMessageProducer(input, jsonHandler, remoteEndpoint);
	MessageConsumer messageConsumer = wrapMessageConsumer(remoteEndpoint);
	ConcurrentMessageProcessor msgProcessor = createMessageProcessor(reader, messageConsumer, remoteProxy);
	ExecutorService execService = executorService != null ? executorService : Executors.newCachedThreadPool();
	return createLauncher(execService, remoteProxy, remoteEndpoint, msgProcessor);
}
 

@Test
public void testParamsParsing_02() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"foo\",\n"
			+ "\"params\": {\"uri\": \"dummy://mymodel.mydsl\"}\n"
			+ "}");
	Assert.assertEquals(Location.class, message.getParams().getClass());
}
 

@Test
public void testParamsParsing_03() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"bar\",\n"
			+ "\"params\": {\"uri\": \"dummy://mymodel.mydsl\"}\n"
			+ "}");
	Assert.assertEquals(JsonObject.class, message.getParams().getClass());
}
 

@Test
public void testRawMultiParamsParsing_01() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<String>() {}.getType(),
			new TypeToken<Integer>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"foo\",\n"
			+ "\"params\": [\"foo\", 2]\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(2, parameters.size());
	Assert.assertEquals("foo", parameters.get(0));
	Assert.assertEquals(2, parameters.get(1));
}
 

@Test
public void testRawMultiParamsParsing_03() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Void>() {}.getType(),
			new TypeToken<List<String>>() {}.getType(),
			new TypeToken<List<Integer>>() {}.getType(),
			new TypeToken<Location>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	
	RequestMessage message = (RequestMessage) handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"method\":\"foo\",\n"
			+ "\"params\": [[\"foo\", \"bar\"], [1, 2], {\"uri\": \"dummy://mymodel.mydsl\"}]\n"
			+ "}");
	Assert.assertTrue("" + message.getParams().getClass(), message.getParams() instanceof List);

	List<?> parameters = (List<?>) message.getParams();
	Assert.assertEquals(3, parameters.size());
	Assert.assertEquals("[foo, bar]", parameters.get(0).toString());
	Assert.assertEquals("[1, 2]", parameters.get(1).toString());
	Assert.assertTrue("" + parameters.get(2).getClass(), parameters.get(2) instanceof Location);
}
 

@Test
public void testSerializeEmptyList() {
	MessageJsonHandler handler = new MessageJsonHandler(Collections.emptyMap());
	NotificationMessage message = new NotificationMessage();
	message.setMethod("foo");
	message.setParams(Collections.EMPTY_LIST);
	String json = handler.serialize(message);
	Assert.assertEquals("{\"jsonrpc\":\"2.0\",\"method\":\"foo\",\"params\":[]}", json);
}
 

@Test
public void testStopOnSocketClosed() throws Throwable {
	executorService.submit(() -> {
		InputStream input = new InputStream() {
			@Override
			public int read() throws IOException {
				throw new SocketException("Socket closed");
			}
		};
		MessageJsonHandler jsonHandler = new MessageJsonHandler(Collections.emptyMap());
		StreamMessageProducer messageProducer = new StreamMessageProducer(input, jsonHandler);
		messageProducer.listen(message -> {});
		messageProducer.close();
	}).get(TIMEOUT, TimeUnit.MILLISECONDS);
}
 

@Test
public void testParseNullList() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<List<? extends Entry>>() {}.getType(),
			new TypeToken<List<? extends Entry>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id)->"foo");
	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ " \"result\": null}");
	Assert.assertNull(((ResponseMessage)message).getResult());
}
 

@SuppressWarnings({ "unchecked" })
@Test
public void testEither_01() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Either<String, List<Map<String,String>>>>() {}.getType(),
			new TypeToken<Either<String, Integer>>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");
	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ " \"result\": [\n"
			+ "  {\"name\":\"foo\"},\n"
			+ "  {\"name\":\"bar\"}\n"
			+ "]}");
	Either<String, List<Map<String, String>>> result = (Either<String, List<Map<String,String>>>) ((ResponseMessage)message).getResult();
	Assert.assertTrue(result.isRight());
	for (Map<String, String> e : result.getRight()) {
		Assert.assertNotNull(e.get("name"));
	}
	message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n" 
			+ "\"result\": \"name\"\n"
			+ "}");
	result = (Either<String, List<Map<String,String>>>) ((ResponseMessage)message).getResult();
	Assert.assertFalse(result.isRight());
	Assert.assertEquals("name", result.getLeft());
}
 

@SuppressWarnings({ "unchecked" })
@Test
public void testEither_05() {
	Map<String, JsonRpcMethod> supportedMethods = new LinkedHashMap<>();
	supportedMethods.put("foo", JsonRpcMethod.request("foo",
			new TypeToken<Either<List<MyClass>, MyClassList>>() {}.getType(),
			new TypeToken<Object>() {}.getType()));
	MessageJsonHandler handler = new MessageJsonHandler(supportedMethods);
	handler.setMethodProvider((id) -> "foo");

	Message message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"result\": [{\n"
			+ "  value:\"foo\"\n"
			+ "}]}");
	Either<List<MyClass>, MyClassList> result = (Either<List<MyClass>, MyClassList>) ((ResponseMessage)message).getResult();
	Assert.assertTrue(result.isLeft());
	Assert.assertEquals("foo", result.getLeft().get(0).getValue());
	
	message = handler.parseMessage("{\"jsonrpc\":\"2.0\","
			+ "\"id\":\"2\",\n"
			+ "\"result\": {\n"
			+ "  items: [{\n"
			+ "    value:\"bar\"\n"
			+ "}]}}");
	result = (Either<List<MyClass>, MyClassList>) ((ResponseMessage)message).getResult();
	Assert.assertTrue(result.isRight());
	Assert.assertEquals("bar", result.getRight().getItems().get(0).getValue());
}