Add BatteryTipDetector and LowBatteryTip stuffs.

This cl adds the infra of BatteryTipDetector and use LowBatteryTip
as an example(tip model + detector).

Also add SummaryTipDetector and related tests

Bug: 70570352
Test: RunSettingsRoboTests

Change-Id: Icf1349b6ede9eb7ee5ed69b39ee3a2661ac660fa

tests/robotests/src/com/android/settings/fuelgauge/batterytip/BatteryTipLoaderTest.java

@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2017 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.batterytip;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.doReturn;
+
+import android.content.Context;
+
+import com.android.internal.os.BatteryStatsHelper;
+import com.android.settings.TestConfig;
+import com.android.settings.fuelgauge.batterytip.detectors.BatteryTipDetector;
+import com.android.settings.fuelgauge.batterytip.tips.BatteryTip;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class BatteryTipLoaderTest {
+    @Mock
+    private BatteryStatsHelper mBatteryStatsHelper;
+    @Mock
+    private BatteryTipDetector mBatteryTipDetector;
+    @Mock
+    private BatteryTip mBatteryTip;
+    private Context mContext;
+    private BatteryTipLoader mBatteryTipLoader;
+    private List<BatteryTip> mBatteryTips;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application;
+        doReturn(mBatteryTip).when(mBatteryTipDetector).detect();
+        mBatteryTipLoader = new BatteryTipLoader(mContext, mBatteryStatsHelper);
+        mBatteryTips = new ArrayList<>();
+    }
+
+    @Test
+    public void testAddBatteryTipFromDetector_tipVisible_addAndUpdateCount() {
+        doReturn(true).when(mBatteryTip).isVisible();
+        mBatteryTipLoader.mVisibleTips = 0;
+
+        mBatteryTipLoader.addBatteryTipFromDetector(mBatteryTips, mBatteryTipDetector);
+
+        assertThat(mBatteryTips.contains(mBatteryTip)).isTrue();
+        assertThat(mBatteryTipLoader.mVisibleTips).isEqualTo(1);
+    }
+
+    @Test
+    public void testAddBatteryTipFromDetector_tipInvisible_doNotAddCount() {
+        doReturn(false).when(mBatteryTip).isVisible();
+        mBatteryTipLoader.mVisibleTips = 0;
+
+        mBatteryTipLoader.addBatteryTipFromDetector(mBatteryTips, mBatteryTipDetector);
+
+        assertThat(mBatteryTips.contains(mBatteryTip)).isTrue();
+        assertThat(mBatteryTipLoader.mVisibleTips).isEqualTo(0);
+    }
+
+}

tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/LowBatteryDetectorTest.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 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.batterytip.detectors;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+import android.text.format.DateUtils;
+
+import com.android.settings.TestConfig;
+import com.android.settings.fuelgauge.BatteryInfo;
+import com.android.settings.fuelgauge.batterytip.BatteryTipPolicy;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class LowBatteryDetectorTest {
+    private Context mContext;
+    @Mock
+    private BatteryInfo mBatteryInfo;
+    private BatteryTipPolicy mPolicy;
+    private LowBatteryDetector mLowBatteryDetector;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application;
+        mPolicy = spy(new BatteryTipPolicy(mContext));
+        mLowBatteryDetector = new LowBatteryDetector(mPolicy, mBatteryInfo);
+    }
+
+    @Test
+    public void testDetect_disabledByPolicy_tipInvisible() {
+        ReflectionHelpers.setField(mPolicy, "lowBatteryEnabled", false);
+
+        assertThat(mLowBatteryDetector.detect().isVisible()).isFalse();
+    }
+
+    @Test
+    public void testDetect_shortBatteryLife_tipVisible() {
+        mBatteryInfo.discharging = true;
+        mBatteryInfo.remainingTimeUs = 1 * DateUtils.MINUTE_IN_MILLIS;
+
+        assertThat(mLowBatteryDetector.detect().isVisible()).isTrue();
+    }
+
+    @Test
+    public void testDetect_longBatteryLife_tipInvisible() {
+        mBatteryInfo.discharging = true;
+        mBatteryInfo.remainingTimeUs = 1 * DateUtils.DAY_IN_MILLIS;
+
+        assertThat(mLowBatteryDetector.detect().isVisible()).isFalse();
+    }
+}

tests/robotests/src/com/android/settings/fuelgauge/batterytip/detectors/SummaryDetectorTest.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2017 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.batterytip.detectors;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.spy;
+
+import android.content.Context;
+
+import com.android.settings.TestConfig;
+import com.android.settings.fuelgauge.batterytip.BatteryTipPolicy;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+import org.robolectric.util.ReflectionHelpers;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class SummaryDetectorTest {
+    private Context mContext;
+    private BatteryTipPolicy mPolicy;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+
+        mContext = RuntimeEnvironment.application;
+        mPolicy = spy(new BatteryTipPolicy(mContext));
+    }
+
+    @Test
+    public void testDetect_disabledByPolicy_tipInvisible() {
+        ReflectionHelpers.setField(mPolicy, "summaryEnabled", false);
+        SummaryDetector detector = new SummaryDetector(mPolicy, 0 /* visibleTips */);
+
+        assertThat(detector.detect().isVisible()).isFalse();
+    }
+
+    @Test
+    public void testDetect_noOtherTips_tipVisible() {
+        SummaryDetector detector = new SummaryDetector(mPolicy, 0 /* visibleTips */);
+
+        assertThat(detector.detect().isVisible()).isTrue();
+    }
+
+    @Test
+    public void testDetect_hasOtherTips_tipInVisible() {
+        SummaryDetector detector = new SummaryDetector(mPolicy, 1 /* visibleTips */);
+
+        assertThat(detector.detect().isVisible()).isFalse();
+    }
+}