com.squareup.picasso.OkHttp3DownloaderTest.java Source code

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Here is the source code for com.squareup.picasso.OkHttp3DownloaderTest.java

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/*
 * Copyright (C) 2013 Square, Inc.
 *
 * 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 com.squareup.picasso;

import android.net.Uri;
import com.squareup.okhttp.Cache;
import com.squareup.okhttp.OkHttpClient;
import okhttp3.mockwebserver.MockResponse;
import okhttp3.mockwebserver.MockWebServer;
import okhttp3.mockwebserver.RecordedRequest;
import okio.Okio;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.junit.runner.RunWith;
import org.robolectric.RobolectricTestRunner;
import org.robolectric.annotation.Config;

import static org.fest.assertions.api.Assertions.assertThat;
import static org.junit.Assert.fail;

@RunWith(RobolectricTestRunner.class)
@Config(manifest = Config.NONE)
public class OkHttp3DownloaderTest {
    @Rule
    public TemporaryFolder temporaryFolder = new TemporaryFolder();
    @Rule
    public MockWebServer server = new MockWebServer();

    private OkHttp3Downloader downloader;
    private Uri uri;

    @Before
    public void setUp() throws Exception {
        downloader = new OkHttp3Downloader(temporaryFolder.getRoot());
        uri = Uri.parse(server.url("/").toString());
    }

    @Test
    public void cachedResponse() throws Exception {
        server.enqueue(new MockResponse().setHeader("Cache-Control", "max-age=31536000").setBody("Hi"));

        Downloader.Response response1 = downloader.load(uri, 0);
        assertThat(response1.cached).isFalse();
        // Exhaust input stream to ensure response is cached.
        Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

        Downloader.Response response2 = downloader.load(uri, NetworkPolicy.OFFLINE.index);
        assertThat(response2.cached).isTrue();
    }

    @Test
    public void offlineStaleResponse() throws Exception {
        server.enqueue(new MockResponse().setHeader("Cache-Control", "max-age=1")
                .setHeader("Expires", "Mon, 29 Dec 2014 21:44:55 GMT").setBody("Hi"));

        Downloader.Response response1 = downloader.load(uri, 0);
        assertThat(response1.cached).isFalse();
        // Exhaust input stream to ensure response is cached.
        Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

        Downloader.Response response2 = downloader.load(uri, NetworkPolicy.OFFLINE.index);
        assertThat(response2.cached).isTrue();
    }

    @Test
    public void networkPolicyNoCache() throws Exception {
        MockResponse response = new MockResponse().setHeader("Cache-Control", "max-age=31536000").setBody("Hi");
        server.enqueue(response);

        Downloader.Response response1 = downloader.load(uri, 0);
        assertThat(response1.cached).isFalse();
        // Exhaust input stream to ensure response is cached.
        Okio.buffer(Okio.source(response1.getInputStream())).readByteArray();

        // Enqueue the same response again but this time use NetworkPolicy.NO_CACHE.
        server.enqueue(response);

        Downloader.Response response2 = downloader.load(uri, NetworkPolicy.NO_CACHE.index);
        // Response should not be coming from cache even if it was cached previously.
        assertThat(response2.cached).isFalse();
    }

    @Test
    public void networkPolicyNoStore() throws Exception {
        server.enqueue(new MockResponse());
        downloader.load(uri, NetworkPolicy.NO_STORE.index);
        RecordedRequest request = server.takeRequest();
        assertThat(request.getHeader("Cache-Control")).isEqualTo("no-store");
    }

    @Test
    public void readsContentLengthHeader() throws Exception {
        server.enqueue(new MockResponse().addHeader("Content-Length", 1024));

        Downloader.Response response = downloader.load(uri, 0);
        assertThat(response.contentLength).isEqualTo(1024);
    }

    @Test
    public void throwsResponseException() throws Exception {
        server.enqueue(new MockResponse().setStatus("HTTP/1.1 401 Not Authorized"));

        try {
            downloader.load(uri, 0);
            fail("Expected ResponseException.");
        } catch (Downloader.ResponseException e) {
            assertThat(e).hasMessage("401 Not Authorized");
        }
    }

    @Test
    public void shutdownClosesCache() throws Exception {
        OkHttpClient client = new OkHttpClient();
        Cache cache = new Cache(temporaryFolder.getRoot(), 100);
        client.setCache(cache);
        new OkHttpDownloader(client).shutdown();
        assertThat(cache.isClosed()).isTrue();
    }
}