1 files changed, 160 insertions, 0 deletions
diff --git a/androidx/media/TestUtils.java b/androidx/media/TestUtils.java
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+++ b/androidx/media/TestUtils.java
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+/*
+ * Copyright 2018 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 androidx.media;
+
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+
+import java.io.FileDescriptor;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Objects;
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * Utilities for tests.
+ */
+public final class TestUtils {
+    private static final int WAIT_TIME_MS = 1000;
+    private static final int WAIT_SERVICE_TIME_MS = 5000;
+
+    /**
+     * Finds the session with id in this test package.
+     *
+     * @param context
+     * @param id
+     * @return
+     */
+    public static SessionToken2 getServiceToken(Context context, String id) {
+        switch (id) {
+            case MockMediaSessionService2.ID:
+                return new SessionToken2(context, new ComponentName(
+                        context.getPackageName(), MockMediaSessionService2.class.getName()));
+            case MockMediaLibraryService2.ID:
+                return new SessionToken2(context, new ComponentName(
+                        context.getPackageName(), MockMediaLibraryService2.class.getName()));
+        }
+        fail("Unknown id=" + id);
+        return null;
+    }
+
+    /**
+     * Compares contents of two bundles.
+     *
+     * @param a a bundle
+     * @param b another bundle
+     * @return {@code true} if two bundles are the same. {@code false} otherwise. This may be
+     *     incorrect if any bundle contains a bundle.
+     */
+    public static boolean equals(Bundle a, Bundle b) {
+        if (a == b) {
+            return true;
+        }
+        if (a == null || b == null) {
+            return false;
+        }
+        if (!a.keySet().containsAll(b.keySet())
+                || !b.keySet().containsAll(a.keySet())) {
+            return false;
+        }
+        for (String key : a.keySet()) {
+            if (!Objects.equals(a.get(key), b.get(key))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    /**
+     * Create a playlist for testing purpose
+     * <p>
+     * Caller's method name will be used for prefix of each media item's media id.
+     *
+     * @param size lits size
+     * @return the newly created playlist
+     */
+    public static List<MediaItem2> createPlaylist(int size) {
+        final List<MediaItem2> list = new ArrayList<>();
+        String caller = Thread.currentThread().getStackTrace()[1].getMethodName();
+        for (int i = 0; i < size; i++) {
+            list.add(new MediaItem2.Builder(MediaItem2.FLAG_PLAYABLE)
+                    .setMediaId(caller + "_item_" + (size + 1))
+                    .setDataSourceDesc(
+                            new DataSourceDesc.Builder()
+                                    .setDataSource(new FileDescriptor())
+                                    .build())
+                    .build());
+        }
+        return list;
+    }
+
+    /**
+     * Create a media item with the metadata for testing purpose.
+     *
+     * @return the newly created media item
+     * @see #createMetadata()
+     */
+    public static MediaItem2 createMediaItemWithMetadata() {
+        return new MediaItem2.Builder(MediaItem2.FLAG_PLAYABLE)
+                .setMetadata(createMetadata()).build();
+    }
+
+    /**
+     * Create a media metadata for testing purpose.
+     * <p>
+     * Caller's method name will be used for the media id.
+     *
+     * @return the newly created media item
+     */
+    public static MediaMetadata2 createMetadata() {
+        String mediaId = Thread.currentThread().getStackTrace()[1].getMethodName();
+        return new MediaMetadata2.Builder()
+                .putString(MediaMetadata2.METADATA_KEY_MEDIA_ID, mediaId).build();
+    }
+
+    /**
+     * Handler that always waits until the Runnable finishes.
+     */
+    public static class SyncHandler extends Handler {
+        public SyncHandler(Looper looper) {
+            super(looper);
+        }
+
+        public void postAndSync(final Runnable runnable) throws InterruptedException {
+            if (getLooper() == Looper.myLooper()) {
+                runnable.run();
+            } else {
+                final CountDownLatch latch = new CountDownLatch(1);
+                post(new Runnable() {
+                    @Override
+                    public void run() {
+                        runnable.run();
+                        latch.countDown();
+                    }
+                });
+                assertTrue(latch.await(WAIT_TIME_MS, TimeUnit.MILLISECONDS));
+            }
+        }
+    }
+}