Add a flashlight slice in settings.

- It retrieves the flashlight status from Settings.Secure.
- It uses the broadcast relay to update flashlight status
without action on the slice.

Test: robotests
Change-Id: Ib4d636541f5166b8634326cce76aed5665989b76
Fixes: 74913192

tests/robotests/src/com/android/settings/flashlight/FlashlightSliceBuilderTest.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2018 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.flashlight;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settings.testutils.SliceTester;
+
+import android.content.res.Resources;
+import android.provider.Settings;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+
+import java.util.List;
+
+import androidx.slice.Slice;
+import androidx.slice.SliceItem;
+import androidx.slice.SliceMetadata;
+import androidx.slice.SliceProvider;
+import androidx.slice.core.SliceAction;
+import androidx.slice.widget.SliceLiveData;
+
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class FlashlightSliceBuilderTest {
+
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = spy(RuntimeEnvironment.application);
+
+        // Prevent crash in SliceMetadata.
+        Resources resources = spy(mContext.getResources());
+        doReturn(60).when(resources).getDimensionPixelSize(anyInt());
+        doReturn(resources).when(mContext).getResources();
+
+        // Set-up specs for SliceMetadata.
+        SliceProvider.setSpecs(SliceLiveData.SUPPORTED_SPECS);
+    }
+
+    @Test
+    public void getFlashlightSlice_correctData() {
+        Settings.Secure.putInt(
+                mContext.getContentResolver(), Settings.Secure.FLASHLIGHT_AVAILABLE, 1);
+        final Slice slice = FlashlightSliceBuilder.getSlice(mContext);
+        final SliceMetadata metadata = SliceMetadata.from(mContext, slice);
+
+        final List<SliceAction> toggles = metadata.getToggles();
+        assertThat(toggles).hasSize(1);
+
+        final List<SliceItem> sliceItems = slice.getItems();
+        SliceTester.assertTitle(sliceItems, mContext.getString(R.string.power_flashlight));
+    }
+}