org.apache.servicecomb.foundation.vertx.http.TestStandardHttpServletResponseEx.java Source code

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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.http;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.servlet.ServletOutputStream;
import javax.servlet.WriteListener;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;

import org.apache.commons.lang.RandomStringUtils;
import org.apache.servicecomb.foundation.common.part.InputStreamPart;
import org.hamcrest.Matchers;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;

import io.vertx.core.buffer.Buffer;
import mockit.Expectations;
import mockit.Mock;
import mockit.MockUp;
import mockit.Mocked;

public class TestStandardHttpServletResponseEx {
    @Mocked
    HttpServletResponse response;

    StandardHttpServletResponseEx responseEx;

    @Rule
    public ExpectedException expectedException = ExpectedException.none();

    @Before
    public void setup() {
        responseEx = new StandardHttpServletResponseEx(response);
    }

    @Test
    public void setBodyBuffer() {
        Assert.assertNull(responseEx.getBodyBuffer());

        Buffer bodyBuffer = Buffer.buffer();
        bodyBuffer.appendString("abc");
        responseEx.setBodyBuffer(bodyBuffer);
        Assert.assertEquals("abc", responseEx.getBodyBuffer().toString());
    }

    @Test
    public void getBodyBytes() {
        Buffer bodyBuffer = Buffer.buffer();
        bodyBuffer.appendString("abc");
        responseEx.setBodyBuffer(bodyBuffer);
        Assert.assertEquals("abc", new String(responseEx.getBodyBytes(), 0, responseEx.getBodyBytesLength()));
    }

    @Test
    public void getBodyBytesLength() {
        Buffer bodyBuffer = Buffer.buffer();
        bodyBuffer.appendString("abc");
        responseEx.setBodyBuffer(bodyBuffer);
        Assert.assertEquals(3, responseEx.getBodyBytesLength());
    }

    @Test
    public void setStatus() {
        responseEx.setStatus(200, "ok");
        Assert.assertEquals(200, responseEx.getStatus());
        Assert.assertEquals(200, responseEx.getStatusType().getStatusCode());
        Assert.assertEquals("ok", responseEx.getStatusType().getReasonPhrase());
    }

    @Test
    public void flushBuffer() throws IOException {
        Buffer buffer = Buffer.buffer();
        ServletOutputStream output = new ServletOutputStream() {
            @Override
            public boolean isReady() {
                return true;
            }

            @Override
            public void setWriteListener(WriteListener writeListener) {

            }

            @Override
            public void write(int b) throws IOException {
                buffer.appendByte((byte) b);
            }
        };
        response = new MockUp<HttpServletResponse>() {
            @Mock
            ServletOutputStream getOutputStream() {
                return output;
            }
        }.getMockInstance();
        responseEx = new StandardHttpServletResponseEx(response);

        // no body
        responseEx.flushBuffer();
        Assert.assertEquals(0, buffer.length());

        Buffer body = Buffer.buffer().appendString("body");
        responseEx.setBodyBuffer(body);
        responseEx.flushBuffer();
        Assert.assertEquals("body", buffer.toString());
    }

    @Test
    public void attribute() {
        responseEx.setAttribute("k", "v");
        Assert.assertEquals("v", responseEx.getAttribute("k"));
    }

    @Test
    public void sendPart_succ() throws Throwable {
        String src = RandomStringUtils.random(100);
        InputStream inputStream = new ByteArrayInputStream(src.getBytes());
        Part part = new InputStreamPart("name", inputStream);
        Buffer buffer = Buffer.buffer();
        ServletOutputStream outputStream = new MockUp<ServletOutputStream>() {
            @Mock
            void write(int b) {
                buffer.appendByte((byte) b);
            }
        }.getMockInstance();

        new Expectations() {
            {
                response.getOutputStream();
                result = outputStream;
            }
        };

        responseEx.sendPart(part).get();

        Assert.assertEquals(src, buffer.toString());
    }

    @Test
    public void sendPart_failed(@Mocked Part part) throws Throwable {
        Error error = new Error();
        new Expectations() {
            {
                response.getOutputStream();
                result = error;
            }
        };

        expectedException.expect(Matchers.sameInstance(error));

        responseEx.sendPart(part).get();
    }
}