Fix support for USER_ALL in FakeSettings

If a content observer was registered to a SettingsProxy using
UserHandle.USER_ALL, testing that was expecting to pass would fail.

This CL fixes that by matching every user to USER_ALL observers that
match the Uri.

Test: atest SystemUITests
Fixes: 194934707
Change-Id: I41a0eb50a2cd1700b03b372bfcc199bebd9aea35

packages/SystemUI/tests/src/com/android/systemui/util/settings/FakeSettings.java

@@ -31,6 +31,7 @@ public class FakeSettings implements SecureSettings, GlobalSettings, SystemSetti
     private final Map<SettingsKey, String> mValues = new HashMap<>();
     private final Map<SettingsKey, List<ContentObserver>> mContentObservers =
             new HashMap<>();
+    private final Map<String, List<ContentObserver>> mContentObserversAllUsers = new HashMap<>();
 
     public static final Uri CONTENT_URI = Uri.parse("content://settings/fake");
 
@@ -55,9 +56,15 @@ public class FakeSettings implements SecureSettings, GlobalSettings, SystemSetti
     @Override
     public void registerContentObserverForUser(Uri uri, boolean notifyDescendents,
             ContentObserver settingsObserver, int userHandle) {
+        List<ContentObserver> observers;
+        if (userHandle == UserHandle.USER_ALL) {
+            mContentObserversAllUsers.putIfAbsent(uri.toString(), new ArrayList<>());
+            observers = mContentObserversAllUsers.get(uri.toString());
+        } else {
             SettingsKey key = new SettingsKey(userHandle, uri.toString());
             mContentObservers.putIfAbsent(key, new ArrayList<>());
-        List<ContentObserver> observers = mContentObservers.get(key);
+            observers = mContentObservers.get(key);
+        }
         observers.add(settingsObserver);
     }
 
@@ -67,6 +74,10 @@ public class FakeSettings implements SecureSettings, GlobalSettings, SystemSetti
             List<ContentObserver> observers = mContentObservers.get(key);
             observers.remove(settingsObserver);
         }
+        for (String key : mContentObserversAllUsers.keySet()) {
+            List<ContentObserver> observers = mContentObserversAllUsers.get(key);
+            observers.remove(settingsObserver);
+        }
     }
 
     @Override
@@ -114,6 +125,10 @@ public class FakeSettings implements SecureSettings, GlobalSettings, SystemSetti
         for (ContentObserver observer : mContentObservers.getOrDefault(key, new ArrayList<>())) {
             observer.dispatchChange(false, List.of(uri), userHandle);
         }
+        for (ContentObserver observer :
+                mContentObserversAllUsers.getOrDefault(uri.toString(), new ArrayList<>())) {
+            observer.dispatchChange(false, List.of(uri), userHandle);
+        }
         return true;
     }
 

packages/SystemUI/tests/src/com/android/systemui/util/settings/FakeSettingsTest.java

@@ -25,6 +25,7 @@ import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
 
 import android.database.ContentObserver;
+import android.os.UserHandle;
 import android.provider.Settings;
 import android.testing.AndroidTestingRunner;
 
@@ -88,6 +89,16 @@ public class FakeSettingsTest extends SysuiTestCase {
         verify(mContentObserver).dispatchChange(anyBoolean(), any(Collection.class), anyInt());
     }
 
+    @Test
+    public void testRegisterContentObserverAllUsers() {
+        mFakeSettings.registerContentObserverForUser(
+                mFakeSettings.getUriFor("cat"), false, mContentObserver, UserHandle.USER_ALL);
+
+        mFakeSettings.putString("cat", "hat");
+
+        verify(mContentObserver).dispatchChange(anyBoolean(), any(Collection.class), anyInt());
+    }
+
     @Test
     public void testUnregisterContentObserver() {
         mFakeSettings.registerContentObserver("cat", mContentObserver);
@@ -98,4 +109,16 @@ public class FakeSettingsTest extends SysuiTestCase {
         verify(mContentObserver, never()).dispatchChange(
                 anyBoolean(), any(Collection.class), anyInt());
     }
+
+    @Test
+    public void testUnregisterContentObserverAllUsers() {
+        mFakeSettings.registerContentObserverForUser(
+                mFakeSettings.getUriFor("cat"), false, mContentObserver, UserHandle.USER_ALL);
+        mFakeSettings.unregisterContentObserver(mContentObserver);
+
+        mFakeSettings.putString("cat", "hat");
+
+        verify(mContentObserver, never()).dispatchChange(
+                anyBoolean(), any(Collection.class), anyInt());
+    }
 }