org.apache.servicecomb.foundation.vertx.stream.TestPumpFromPart.java Source code

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Here is the source code for org.apache.servicecomb.foundation.vertx.stream.TestPumpFromPart.java

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.servicecomb.foundation.vertx.stream;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.concurrent.ExecutionException;

import javax.servlet.http.Part;

import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.RandomStringUtils;
import org.apache.servicecomb.foundation.common.part.InputStreamPart;
import org.apache.servicecomb.foundation.vertx.stream.InputStreamToReadStream.ReadResult;
import org.hamcrest.Matchers;
import org.junit.Assert;
import org.junit.Test;

import io.vertx.core.Context;
import io.vertx.core.Future;
import io.vertx.core.impl.SyncContext;
import mockit.Expectations;
import mockit.Mock;
import mockit.MockUp;

public class TestPumpFromPart {
    String src = RandomStringUtils.random(100);

    boolean inputStreamClosed;

    InputStream inputStream = new ByteArrayInputStream(src.getBytes()) {
        @Override
        public void close() throws IOException {
            super.close();
            inputStreamClosed = true;
        }
    };

    Part part;

    boolean outputStreamClosed;

    BufferOutputStream outputStream;

    IOException error = new IOException();

    Context context = new SyncContext();

    private void run(Context context, boolean closeOutput) throws Throwable {
        inputStream.reset();
        part = new InputStreamPart("name", inputStream);

        outputStream = new BufferOutputStream() {
            @Override
            public void close() {
                super.close();
                outputStreamClosed = true;
            }
        };

        new PumpFromPart(context, part).toOutputStream(outputStream, closeOutput).get();
    }

    public void do_pump_succ(Context context) throws Throwable {
        run(context, true);

        Assert.assertEquals(src, outputStream.getBuffer().toString());
        Assert.assertTrue(inputStreamClosed);
        Assert.assertTrue(outputStreamClosed);
    }

    @Test
    public void pump_succ() throws Throwable {
        do_pump_succ(null);
        do_pump_succ(context);
    }

    public void do_pump_outputNotClose(Context context) throws Throwable {
        run(context, false);

        Assert.assertEquals(src, outputStream.getBuffer().toString());
        Assert.assertFalse(outputStreamClosed);
    }

    @Test
    public void pump_outputNotClose() throws Throwable {
        do_pump_outputNotClose(null);
        do_pump_outputNotClose(context);
    }

    public void pump_error(Context context) {
        try {
            run(context, true);
            Assert.fail("must throw exception");
        } catch (Throwable e) {
            Assert.assertThat(e, Matchers.instanceOf(ExecutionException.class));
            Assert.assertThat(e.getCause(), Matchers.sameInstance(error));
        }

        Assert.assertTrue(inputStreamClosed);
        Assert.assertTrue(outputStreamClosed);
    }

    @Test
    public void pump_read_error() throws IOException {
        new MockUp<InputStreamToReadStream>() {
            @Mock
            void readInWorker(Future<ReadResult> future) {
                future.fail(error);
            }
        };
        new Expectations(IOUtils.class) {
            {
                IOUtils.copyLarge((InputStream) any, (OutputStream) any);
                result = error;
            }
        };

        pump_error(null);
        pump_error(context);
    }

    @Test
    public void pump_write_error() throws IOException {
        new MockUp<BufferOutputStream>() {
            @Mock
            void write(byte[] b) throws IOException {
                throw error;
            }
        };
        new Expectations(IOUtils.class) {
            {
                IOUtils.copyLarge((InputStream) any, (OutputStream) any);
                result = error;
            }
        };

        pump_error(null);
        pump_error(context);
    }
}