Merge "Set preference invisible when no anomaly" into oc-mr1-dev

am: 0e800978bf

Change-Id: Icf0931c60d62fd9e18bc3cfe2853e965403e7740

src/com/android/settings/fuelgauge/anomaly/AnomalySummaryPreferenceController.java

@@ -102,6 +102,8 @@ public class AnomalySummaryPreferenceController {
 
             mAnomalyPreference.setTitle(title);
             mAnomalyPreference.setSummary(summary);
+        } else {
+            mAnomalyPreference.setVisible(false);
         }
     }
 

tests/robotests/src/com/android/settings/fuelgauge/anomaly/AnomalySummaryPreferenceControllerTest.java

@@ -106,6 +106,16 @@ public class AnomalySummaryPreferenceControllerTest {
         assertThat(mPreference.getSummary()).isEqualTo("Keeping device awake");
     }
 
+    @Test
+    public void testUpdateAnomalySummaryPreference_emptyAnomaly_preferenceInvisible() {
+        mPreference.setVisible(true);
+        mAnomalyList.clear();
+
+        mAnomalySummaryPreferenceController.updateAnomalySummaryPreference(mAnomalyList);
+
+        assertThat(mPreference.isVisible()).isFalse();
+    }
+
     @Test
     public void testUpdateAnomalySummaryPreference_multipleAnomalies_showCorrectSummary() {
         mAnomalyList.add(createTestAnomaly());