fm.last.musicbrainz.coverart.impl.FetchJsonListingResponseHandlerTest.java Source code

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Here is the source code for fm.last.musicbrainz.coverart.impl.FetchJsonListingResponseHandlerTest.java

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/*
 * Copyright 2012 Last.fm
 *
 *  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 fm.last.musicbrainz.coverart.impl;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertThat;
import static org.mockito.Mockito.when;

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

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.HttpStatus;
import org.apache.http.StatusLine;
import org.apache.http.client.ResponseHandler;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

@RunWith(MockitoJUnitRunner.class)
public class FetchJsonListingResponseHandlerTest {

    @Mock
    private HttpResponse response;

    @Mock
    private HttpEntity entity;

    @Mock
    private StatusLine statusLine;

    private InputStream inputStream;

    private final ResponseHandler<String> handler = FetchJsonListingResponseHandler.INSTANCE;

    @Before
    public void initialise() throws IllegalStateException, IOException {
        inputStream = IOUtils.toInputStream("JSON");
        when(entity.getContent()).thenReturn(inputStream);
        when(response.getStatusLine()).thenReturn(statusLine);
    }

    @Test
    public void jsonIsReturnedWhenReleaseExists() throws IOException {
        when(statusLine.getStatusCode()).thenReturn(HttpStatus.SC_OK);
        when(response.getEntity()).thenReturn(entity);
        String json = handler.handleResponse(response);
        assertThat(json, is("JSON"));
    }

    @Test
    public void nullIsReturnedWhenNoReleaseExists() throws IOException {
        when(statusLine.getStatusCode()).thenReturn(HttpStatus.SC_NOT_FOUND);
        when(response.getEntity()).thenReturn(null);
        String json = handler.handleResponse(response);
        assertThat(json, is(nullValue()));
    }

    @Test(expected = IOException.class)
    public void ioExceptionIsThrownWhenRequestCannotBeFulfilled() throws IOException {
        when(statusLine.getStatusCode()).thenReturn(HttpStatus.SC_METHOD_NOT_ALLOWED);
        String json = handler.handleResponse(response);
    }

}