Merge "Fix App name and icon in Settings Battery details."

tests/robotests/src/com/android/settings/fuelgauge/BatteryEntryTest.java

@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.settings.fuelgauge;
+
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.os.Handler;
+import android.os.UserManager;
+
+import com.android.internal.os.BatterySipper;
+import com.android.internal.os.BatterySipper.DrainType;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoRule;
+import org.mockito.junit.MockitoJUnit;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+@RunWith(RobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BatteryEntryTest {
+
+    private static final int APP_UID = 123;
+    private static final String APP_DEFAULT_PACKAGE_NAME = "com.android.test";
+    private static final String APP_LABEL = "Test App Name";
+    private static final String HIGH_DRAIN_PACKAGE = "com.android.test.screen";
+
+    @Rule public MockitoRule mocks = MockitoJUnit.rule();
+
+    @Mock private Context mockContext;
+    @Mock private Handler mockHandler;
+    @Mock private PackageManager mockPackageManager;
+    @Mock private UserManager mockUserManager;
+
+    @Before
+    public void stubContextToReturnMockPackageManager() {
+        when(mockContext.getPackageManager()).thenReturn(mockPackageManager);
+    }
+
+    @Before
+    public void stubPackageManagerToReturnAppPackageAndName() throws NameNotFoundException {
+        when(mockPackageManager.getPackagesForUid(APP_UID)).thenReturn(
+            new String[]{APP_DEFAULT_PACKAGE_NAME});
+
+        ApplicationInfo appInfo = mock(ApplicationInfo.class);
+        when(mockPackageManager.getApplicationInfo(APP_DEFAULT_PACKAGE_NAME, 0 /* no flags */))
+            .thenReturn(appInfo);
+        when(mockPackageManager.getApplicationLabel(appInfo)).thenReturn(APP_LABEL);
+    }
+
+    private BatteryEntry createBatteryEntryForApp() {
+        return new BatteryEntry(mockContext, mockHandler, mockUserManager, createSipperForApp());
+    }
+
+    private BatterySipper createSipperForApp() {
+        BatterySipper sipper =
+            new BatterySipper(DrainType.APP, new FakeUid(APP_UID), 0 /* power use */);
+        sipper.packageWithHighestDrain = HIGH_DRAIN_PACKAGE;
+        return sipper;
+    }
+
+    @Test
+    public void batteryEntryForApp_shouldSetDefaultPackageNameAndLabel() throws Exception {
+        BatteryEntry entry = createBatteryEntryForApp();
+
+        assertThat(entry.defaultPackageName).isEqualTo(APP_DEFAULT_PACKAGE_NAME);
+        assertThat(entry.getLabel()).isEqualTo(APP_LABEL);
+    }
+
+    @Test
+    public void batteryEntryForApp_shouldSetLabelAsPackageName_whenPackageCannotBeFound()
+        throws Exception {
+      when(mockPackageManager.getApplicationInfo(APP_DEFAULT_PACKAGE_NAME, 0 /* no flags */))
+          .thenThrow(new NameNotFoundException());
+
+      BatteryEntry entry = createBatteryEntryForApp();
+
+      assertThat(entry.getLabel()).isEqualTo(APP_DEFAULT_PACKAGE_NAME);
+    }
+
+    @Test
+    public void batteryEntryForApp_shouldSetHighestDrainPackage_whenPackagesCannotBeFoundForUid() {
+        when(mockPackageManager.getPackagesForUid(APP_UID)).thenReturn(null);
+
+        BatteryEntry entry = createBatteryEntryForApp();
+
+        assertThat(entry.getLabel()).isEqualTo(HIGH_DRAIN_PACKAGE);
+    }
+
+    @Test
+    public void batteryEntryForApp_shouldSetHighestDrainPackage_whenMultiplePackagesFoundForUid() {
+        when(mockPackageManager.getPackagesForUid(APP_UID)).thenReturn(
+            new String[]{APP_DEFAULT_PACKAGE_NAME, "package2", "package3"});
+
+        BatteryEntry entry = createBatteryEntryForApp();
+        
+        assertThat(entry.getLabel()).isEqualTo(HIGH_DRAIN_PACKAGE);
+    }
+}