[Background Sync] Use GcmNetworkManager to start the browser for sync events.

chrome/android/javatests/src/org/chromium/chrome/browser/BackgroundSyncLauncherServiceTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/BackgroundSyncLauncherServiceTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/BackgroundSyncLauncherServiceTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/BackgroundSyncLauncherServiceTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..cb647b6e57d02b00cd2199dfd3c6f06f180be537
--- /dev/null
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/BackgroundSyncLauncherServiceTest.java
@@ -0,0 +1,80 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser;
+
+import android.content.Context;
+import android.test.InstrumentationTestCase;
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.test.util.AdvancedMockContext;
+import org.chromium.base.test.util.Feature;
+
+/**
+ * Tests {@link BackgroundSyncLauncherService}.
+ */
+public class BackgroundSyncLauncherServiceTest extends InstrumentationTestCase {
+    private Context mContext;
+    private BackgroundSyncLauncher mLauncher;
+    private MockLauncherService mLauncherService;
+
+    static class MockLauncherService extends BackgroundSyncLauncherService {
+        private boolean mDidStartService = false;
+
+        @Override
+        protected void launchBrowser(Context context) {
+            mDidStartService = true;
+        }
+
+        // Posts an assertion task to the UI thread. Since this is only called after the call
+        // to onRunTask, it will be enqueued after any possible call to launchBrowser, and we
+        // can reliably check whether launchBrowser was called.
+        protected void checkExpectations(final boolean expectedStartService) {
+            ThreadUtils.runOnUiThread(new Runnable() {
+                @Override
+                public void run() {
+                    assertEquals("StartedService", expectedStartService, mDidStartService);
+                }
+            });
+        }
+    }
+
+    @Override
+    protected void setUp() throws Exception {
+        mContext = new AdvancedMockContext(getInstrumentation().getTargetContext());
+        BackgroundSyncLauncher.setGCMEnabled(false);
+        mLauncher = BackgroundSyncLauncher.create(mContext);
+        mLauncherService = new MockLauncherService();
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        BackgroundSyncLauncher.setGCMEnabled(true);
+        super.tearDown();
+    }
+
+    private void deleteLauncherInstance() {
+        mLauncher.destroy();
+        mLauncher = null;
+    }
+
+    private void startOnRunTaskAndVerify(boolean shouldStart) {
+        mLauncherService.onRunTask(null);
+        mLauncherService.checkExpectations(shouldStart);
+    }
+
+    @SmallTest
+    @Feature({"BackgroundSync"})
+    public void testNoFireWhenInstanceExists() {
+        startOnRunTaskAndVerify(false);
+    }
+
+    @SmallTest
+    @Feature({"BackgroundSync"})
+    public void testFiresWhenInstanceDoesNotExist() {
+        deleteLauncherInstance();
+        startOnRunTaskAndVerify(true);
+    }
+}