Test + utilize change notification in DownloadProvider

Now that I've learned how ContentResolver.notifyChange() works, add a
test to explicitly check it's being called in DownloadProvider, and
take advantage of it in waitForDownloadToStop to get rid of the ugly
old polling mechanism.

Change-Id: Iba71bdf1b0d31454cc4e186ceb4fdd9fdb5faad5

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/src/com/android/providers/downloads/PublicApiFunctionalTest.java b/tests/src/com/android/providers/downloads/PublicApiFunctionalTest.java
index 7982ef4a..3d32ae3c 100644
--- a/tests/src/com/android/providers/downloads/PublicApiFunctionalTest.java
+++ b/tests/src/com/android/providers/downloads/PublicApiFunctionalTest.java
@@ -472,6 +472,19 @@ public class PublicApiFunctionalTest extends AbstractDownloadManagerFunctionalTe
         download.runUntilStatus(DownloadManager.STATUS_SUCCESSFUL);
     }
 
+    public void testContentObserver() throws Exception {
+        enqueueEmptyResponse(HTTP_OK);
+        enqueueRequest(getRequest());
+        mResolver.resetNotified();
+        startService(null);
+        synchronized(mResolver) {
+            if (!mResolver.mNotifyWasCalled) {
+                mResolver.wait(2000);
+            }
+        }
+        assertTrue(mResolver.mNotifyWasCalled);
+    }
+
     private void runSimpleFailureTest(int expectedErrorCode) throws Exception {
         Download download = enqueueRequest(getRequest());
         download.runUntilStatus(DownloadManager.STATUS_FAILED);