Stub out and test system notifications.

This change abstracts NotificationManager interactions behind
SystemFacade and takes advantage of that to test notifications, to a
limited degree.

It also fixes a silly typo in AbstractDownloadManagerFunctionalTest,
and it introduces an extra sleep between tests to avoid some
flakiness.  I'll look for a better solution to that problem after this
change goes in.

Change-Id: I3a0307f828955cd45b0e3581ad499da28cc0556e

1 files changed, 16 insertions, 0 deletions

diff --git a/src/com/android/providers/downloads/SystemFacade.java b/src/com/android/providers/downloads/SystemFacade.java
index d48e6b80..e41644ab 100644
--- a/src/com/android/providers/downloads/SystemFacade.java
+++ b/src/com/android/providers/downloads/SystemFacade.java
@@ -1,6 +1,7 @@
 
 package com.android.providers.downloads;
 
+import android.app.Notification;
 import android.content.Intent;
 import android.content.pm.PackageManager.NameNotFoundException;
 
@@ -37,4 +38,19 @@ interface SystemFacade {
      * Returns true if the specified UID owns the specified package name.
      */
     public boolean userOwnsPackage(int uid, String pckg) throws NameNotFoundException;
+
+    /**
+     * Post a system notification to the NotificationManager.
+     */
+    public void postNotification(int id, Notification notification);
+
+    /**
+     * Cancel a system notification.
+     */
+    public void cancelNotification(int id);
+
+    /**
+     * Cancel all system notifications.
+     */
+    public void cancelAllNotifications();
 }