Convert ChromeActivityTestCaseBase direct children to JUnit4

chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java
index 716c42b6ca20247c634f41a354c305f407e80bb9..20e77d97b8f5d47b1e78c4428a0d99a4823d56ab 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/media/ui/AutoplayMutedNotificationTest.java
@@ -8,14 +8,25 @@ import static org.chromium.base.test.util.Restriction.RESTRICTION_TYPE_NON_LOW_E
 
 import android.content.Context;
 import android.media.AudioManager;
+import android.support.test.InstrumentationRegistry;
 import android.support.test.filters.SmallTest;
 
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.Restriction;
 import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.ChromeSwitches;
 import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.chrome.test.ChromeActivityTestCaseBase;
+import org.chromium.chrome.test.ChromeActivityTestRule;
+import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
 import org.chromium.content.browser.test.util.DOMUtils;
 import org.chromium.content.browser.test.util.JavaScriptUtils;
 import org.chromium.net.test.EmbeddedTestServer;
@@ -23,21 +34,25 @@ import org.chromium.net.test.EmbeddedTestServer;
 /**
  * Integration test that checks that autoplay muted doesn't show a notification nor take audio focus
  */
+@RunWith(ChromeJUnit4ClassRunner.class)
 @RetryOnFailure
-public class AutoplayMutedNotificationTest extends ChromeActivityTestCaseBase<ChromeActivity> {
+@CommandLineFlags.Add({ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE,
+        ChromeActivityTestRule.DISABLE_NETWORK_PREDICTION_FLAG})
+public class AutoplayMutedNotificationTest {
+    @Rule
+    public ChromeActivityTestRule<ChromeActivity> mActivityTestRule =
+            new ChromeActivityTestRule<>(ChromeActivity.class);
+
     private static final String TEST_PATH = "/content/test/data/media/session/autoplay-muted.html";
     private static final String VIDEO_ID = "video";
     private static final int AUDIO_FOCUS_CHANGE_TIMEOUT = 500;  // ms
 
     private EmbeddedTestServer mTestServer;
 
-    public AutoplayMutedNotificationTest() {
-        super(ChromeActivity.class);
-    }
-
     private AudioManager getAudioManager() {
-        return (AudioManager) getActivity().getApplicationContext().getSystemService(
-                Context.AUDIO_SERVICE);
+        return (AudioManager) mActivityTestRule.getActivity()
+                .getApplicationContext()
+                .getSystemService(Context.AUDIO_SERVICE);
     }
 
     private boolean isMediaNotificationVisible() {
@@ -60,7 +75,7 @@ public class AutoplayMutedNotificationTest extends ChromeActivityTestCaseBase<Ch
             int result = getAudioManager().requestAudioFocus(
                     this, AudioManager.STREAM_MUSIC, focusType);
             if (result != AudioManager.AUDIOFOCUS_REQUEST_GRANTED) {
-                fail("Did not get audio focus");
+                Assert.fail("Did not get audio focus");
             } else {
                 mAudioFocusState = focusType;
             }
@@ -69,33 +84,31 @@ public class AutoplayMutedNotificationTest extends ChromeActivityTestCaseBase<Ch
 
     private MockAudioFocusChangeListener mAudioFocusChangeListener;
 
-    @Override
-    protected void setUp() throws Exception {
-        mTestServer = EmbeddedTestServer.createAndStartServer(getInstrumentation().getContext());
+    @Before
+    public void setUp() throws Exception {
+        mTestServer = EmbeddedTestServer.createAndStartServer(
+                InstrumentationRegistry.getInstrumentation().getContext());
         mAudioFocusChangeListener = new MockAudioFocusChangeListener();
-        super.setUp();
+        mActivityTestRule.startMainActivityWithURL(mTestServer.getURL(TEST_PATH));
     }
 
-    @Override
-    protected void tearDown() throws Exception {
+    @After
+    public void tearDown() throws Exception {
         mTestServer.stopAndDestroyServer();
-        super.tearDown();
-    }
-
-    @Override
-    public void startMainActivity() throws InterruptedException {
-        startMainActivityWithURL(mTestServer.getURL(TEST_PATH));
     }
 
+    @Test
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     public void testBasic() throws Exception {
-        Tab tab = getActivity().getActivityTab();
+        Tab tab = mActivityTestRule.getActivity().getActivityTab();
 
         // Taking audio focus.
-        assertEquals(AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
         mAudioFocusChangeListener.requestAudioFocus(AudioManager.AUDIOFOCUS_GAIN);
-        assertEquals(AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
 
         // The page will autoplay the video.
         DOMUtils.waitForMediaPlay(tab.getWebContents(), VIDEO_ID);
@@ -104,42 +117,49 @@ public class AutoplayMutedNotificationTest extends ChromeActivityTestCaseBase<Ch
         Thread.sleep(AUDIO_FOCUS_CHANGE_TIMEOUT);
 
         // Audio focus was not taken and no notification is visible.
-        assertEquals(AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
-        assertFalse(isMediaNotificationVisible());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertFalse(isMediaNotificationVisible());
     }
 
+    @Test
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     public void testDoesNotReactToAudioFocus() throws Exception {
-        Tab tab = getActivity().getActivityTab();
+        Tab tab = mActivityTestRule.getActivity().getActivityTab();
 
         // The page will autoplay the video.
         DOMUtils.waitForMediaPlay(tab.getWebContents(), VIDEO_ID);
 
         // Taking audio focus.
-        assertEquals(AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
         mAudioFocusChangeListener.requestAudioFocus(AudioManager.AUDIOFOCUS_GAIN);
-        assertEquals(AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
 
         // Audio focus notification is OS-driven.
         Thread.sleep(AUDIO_FOCUS_CHANGE_TIMEOUT);
 
         // Video did not pause.
-        assertFalse(DOMUtils.isMediaPaused(tab.getWebContents(), VIDEO_ID));
+        Assert.assertFalse(DOMUtils.isMediaPaused(tab.getWebContents(), VIDEO_ID));
 
         // Still no notification.
-        assertFalse(isMediaNotificationVisible());
+        Assert.assertFalse(isMediaNotificationVisible());
     }
 
+    @Test
     @SmallTest
     @Restriction(RESTRICTION_TYPE_NON_LOW_END_DEVICE)
     public void testAutoplayMutedThenUnmute() throws Exception {
-        Tab tab = getActivity().getActivityTab();
+        Tab tab = mActivityTestRule.getActivity().getActivityTab();
 
         // Taking audio focus.
-        assertEquals(AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_LOSS, mAudioFocusChangeListener.getAudioFocusState());
         mAudioFocusChangeListener.requestAudioFocus(AudioManager.AUDIOFOCUS_GAIN);
-        assertEquals(AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
 
         // The page will autoplay the video.
         DOMUtils.waitForMediaPlay(tab.getWebContents(), VIDEO_ID);
@@ -154,16 +174,17 @@ public class AutoplayMutedNotificationTest extends ChromeActivityTestCaseBase<Ch
         // Unmute from script.
         String result = JavaScriptUtils.executeJavaScriptAndWaitForResult(
                 tab.getWebContents(), sb.toString());
-        assertTrue(result.trim().equalsIgnoreCase("false"));
+        Assert.assertTrue(result.trim().equalsIgnoreCase("false"));
 
         // Video is paused.
-        assertTrue(DOMUtils.isMediaPaused(tab.getWebContents(), VIDEO_ID));
+        Assert.assertTrue(DOMUtils.isMediaPaused(tab.getWebContents(), VIDEO_ID));
 
         // Audio focus notification is OS-driven.
         Thread.sleep(AUDIO_FOCUS_CHANGE_TIMEOUT);
 
         // Audio focus was not taken and no notification is visible.
-        assertEquals(AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
-        assertFalse(isMediaNotificationVisible());
+        Assert.assertEquals(
+                AudioManager.AUDIOFOCUS_GAIN, mAudioFocusChangeListener.getAudioFocusState());
+        Assert.assertFalse(isMediaNotificationVisible());
     }
 }