io.soliton.protobuf.json.HttpJsonRpcClientTest.java Source code

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Here is the source code for io.soliton.protobuf.json.HttpJsonRpcClientTest.java

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/**
 * Copyright 2013 Julien Silland
 *
 * 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 io.soliton.protobuf.json;

import io.soliton.protobuf.ClientMethod;
import io.soliton.protobuf.NullClientLogger;
import io.soliton.protobuf.testing.TimeRequest;
import io.soliton.protobuf.testing.TimeResponse;

import com.google.common.util.concurrent.FutureCallback;
import com.google.common.util.concurrent.Futures;
import com.google.common.util.concurrent.ListenableFuture;
import com.google.protobuf.InvalidProtocolBufferException;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.DefaultChannelPromise;
import io.netty.handler.codec.http.FullHttpRequest;
import io.netty.util.concurrent.ImmediateEventExecutor;
import org.junit.Assert;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.mockito.Mockito;

import javax.annotation.Nullable;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

/**
 * Tests for {@link HttpJsonRpcClient}.
 *
 * @author Julien Silland (julien@soliton.io)
 */
public class HttpJsonRpcClientTest {

    @Test
    public void testEncodeMethodCallSuccess() throws InvalidProtocolBufferException {
        Channel channel = Mockito.mock(Channel.class);

        Mockito.when(channel.remoteAddress())
                .thenReturn(new InetSocketAddress(InetAddress.getLoopbackAddress(), 10000));

        ArgumentCaptor<Object> captor = ArgumentCaptor.forClass(Object.class);
        ChannelFuture success = Mockito.mock(ChannelFuture.class);
        Mockito.when(success.isDone()).thenReturn(true);
        Mockito.when(success.isSuccess()).thenReturn(true);
        Mockito.when(channel.writeAndFlush(captor.capture())).thenReturn(success);
        JsonRpcClientHandler handler = new JsonRpcClientHandler();
        HttpJsonRpcClient client = new HttpJsonRpcClient(channel, handler, "/rpc", new NullClientLogger());

        ClientMethod<TimeResponse> method = Mockito.mock(ClientMethod.class);
        Mockito.when(method.serviceName()).thenReturn("TimeService");
        Mockito.when(method.name()).thenReturn("GetTime");
        Mockito.when(method.outputBuilder()).thenReturn(TimeResponse.newBuilder());

        client.encodeMethodCall(method, TimeRequest.newBuilder().setTimezone("UTC").build());

        Assert.assertEquals(1, handler.inFlightRequests().size());

        Object captured = captor.getValue();
        Assert.assertTrue(captured instanceof FullHttpRequest);
        FullHttpRequest request = (FullHttpRequest) captured;
        Assert.assertEquals("/rpc?pp=0", request.getUri());
    }

    @Test
    public void testEncodeMethodCallFailure() throws InvalidProtocolBufferException, InterruptedException {
        Channel channel = Mockito.mock(Channel.class);

        Mockito.when(channel.remoteAddress())
                .thenReturn(new InetSocketAddress(InetAddress.getLoopbackAddress(), 10000));

        ArgumentCaptor<Object> captor = ArgumentCaptor.forClass(Object.class);

        DefaultChannelPromise failure = new DefaultChannelPromise(channel, ImmediateEventExecutor.INSTANCE);
        failure.setFailure(new Exception("OMGWTF"));
        Mockito.when(channel.writeAndFlush(captor.capture())).thenReturn(failure);

        JsonRpcClientHandler handler = new JsonRpcClientHandler();
        HttpJsonRpcClient client = new HttpJsonRpcClient(channel, handler, "/rpc", new NullClientLogger());

        ClientMethod<TimeResponse> method = Mockito.mock(ClientMethod.class);
        Mockito.when(method.serviceName()).thenReturn("TimeService");
        Mockito.when(method.name()).thenReturn("GetTime");
        Mockito.when(method.outputParser()).thenReturn(TimeResponse.PARSER);

        final CountDownLatch latch = new CountDownLatch(1);
        FutureCallback<TimeResponse> callback = new FutureCallback<TimeResponse>() {
            @Override
            public void onSuccess(@Nullable TimeResponse result) {
            }

            @Override
            public void onFailure(Throwable t) {
                Assert.assertEquals("OMGWTF", t.getMessage());
                latch.countDown();
            }
        };

        ListenableFuture<TimeResponse> future = client.encodeMethodCall(method,
                TimeRequest.newBuilder().setTimezone("UTC").build());

        Futures.addCallback(future, callback);
        latch.await(5, TimeUnit.SECONDS);

        Assert.assertEquals(0, handler.inFlightRequests().size());
    }
}