Android example source code file (MediaMimeTest.java)

This example Android source code file (MediaMimeTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activityinstrumentationtestcase2, android, audio/mp3, content, context, exception, intent, io, mediamimetest, mediumtest, mp3_file, net, network, override, resolveinfo, string, suppress, tag, test, uri

The MediaMimeTest.java Android example source code

/*
 * Copyright (C) 2009 The Android Open Source Project
 *
 * 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.android.mediaframeworktest.functional;

import java.io.File;

import android.content.Context;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.net.Uri;
import android.test.ActivityInstrumentationTestCase2;
import android.test.suitebuilder.annotation.LargeTest;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.suitebuilder.annotation.Suppress;
import android.util.Log;
import com.android.mediaframeworktest.MediaFrameworkTest;

/*
 * System tests for the handling of mime type in the media framework.
 *
 * To run this test suite:
     make frameworks/base/media/tests/MediaFrameworkTest
     make mediaframeworktest

     adb install -r out/target/product/dream/data/app/mediaframeworktest.apk

     adb shell am instrument -e class \
     com.android.mediaframeworktest.functional.MediaMimeTest \
     -w com.android.mediaframeworktest/.MediaFrameworkTestRunner
 *
 */
public class MediaMimeTest extends ActivityInstrumentationTestCase2<MediaFrameworkTest> {    
    private final String TAG = "MediaMimeTest";
    private Context mContext;
    private final String MP3_FILE = "/sdcard/media_api/music/SHORTMP3.mp3";

    public MediaMimeTest() {
        super("com.android.mediaframeworktest", MediaFrameworkTest.class);
    }

    @Override
    protected void setUp() throws Exception {
      super.setUp();
      mContext = getActivity();
      // Checks you have all the test files on your SDCARD.
      assertTrue(new File(MP3_FILE).exists());
    }
    
    @Override 
    protected void tearDown() throws Exception {     
        super.tearDown();              
    }

    // ----------------------------------------------------------------------
    // AUDIO mime type resolution tests.

    @MediumTest
    // Checks the MediaPlaybackActivity handles audio/mp3.
    public void testCheckMediaPlaybackHandlesAudioMp3() throws Exception {
        assertMediaPlaybackActivityHandles("audio/mp3");
    }

    @Suppress
    // Checks the MediaPlaybackActivity handles audio/*.
    public void testCheckMediaPlaybackHandlesAudio() throws Exception {
        assertMediaPlaybackActivityHandles("audio/*");
    }

    // TODO: temporarily remove from medium suite because it hangs whole suite 
    // @MediumTest
    // Checks the MediaPlaybackActivity handles application/itunes. Some servers
    // set the Content-type hadb ieader to application/iTunes (with capital T, but
    // the download manager downcasts it) for their MP3 podcasts. This is non
    // standard but we try to support it anyway.
    // See bug 1401491
    public void testCheckMediaPlaybackHandlesApplicationItunes() throws Exception {
        assertMediaPlaybackActivityHandles("application/itunes");
    }

    @MediumTest
    // Checks the activity resolver handling of mime types is case sensitive.
    // See bug 1710534
    public void testCheckActivityResolverMimeHandlingIsCaseSensitive() throws Exception {
        assertNoActivityHandles("AUDIO/MP3");   // <--- look uppercase
    }

    @MediumTest
    // Checks the activity resolver does not trims leading whitespaces when
    // resolving mime types. Trailing whitespaces seems to be non
    // significant.
    // See bug 1710534
    public void testCheckWhiteSpacesInMimeTypeHandling() throws Exception {
        assertNoActivityHandles(" audio/mp3");
        assertNoActivityHandles(" audio/mp3 ");
        assertMediaPlaybackActivityHandles("audio/mp3 ");
    }

    // @return a ResolveInfo instance for the mime type or null if the type is
    // not handled by any activity.
    private ResolveInfo resolveMime(String mime) {
        Intent viewIntent = new Intent(Intent.ACTION_VIEW);
        Uri uri = Uri.fromParts("file", MP3_FILE, null);

        viewIntent.setDataAndType(uri, mime);
        return mContext.getPackageManager().resolveActivity(
                viewIntent, PackageManager.MATCH_DEFAULT_ONLY);
    }

    // Helper method to check the media playback activity handles the given mime type.
    // @param mime type to test for
    private void assertMediaPlaybackActivityHandles(String mime) throws Exception {
        ResolveInfo ri = resolveMime(mime);

        assertNotNull(ri);
    }

    // Helper method to check that NO activity handles the given mime type.
    // @param mime type to test for
    private void assertNoActivityHandles(String mime) throws Exception {
        assertNull(resolveMime(mime));
    }
}