Merge "Introduce MemoryUsagePreferenceController"

AndroidManifest.xml

@@ -1031,10 +1031,6 @@
             <intent-filter android:priority="3">
                 <action android:name="com.android.settings.action.SETTINGS" />
             </intent-filter>
-            <meta-data android:name="com.android.settings.category"
-                android:value="com.android.settings.category.ia.development" />
-            <meta-data android:name="com.android.settings.summary"
-                android:resource="@string/summary_empty" />
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
                 android:value="com.android.settings.applications.ProcessStatsSummary" />
         </activity>

res/xml/development_prefs.xml

@@ -18,6 +18,14 @@
         xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
         android:key="development_prefs_screen"
         android:title="@string/development_settings_title">
+
+    <Preference
+        android:key="memory"
+        android:icon="@drawable/ic_settings_memory"
+        android:title="@string/memory_settings_title"
+        android:summary="@string/summary_empty"
+        android:fragment="com.android.settings.applications.ProcessStatsSummary" />
+
     <com.android.settings.BugreportPreference
             android:key="bugreport"
             android:title="@*android:string/bugreport_title"

src/com/android/settings/applications/ProcessStatsBase.java

@@ -44,7 +44,7 @@ public abstract class ProcessStatsBase extends SettingsPreferenceFragment
     // smaller than the actual time selected instead of bumping up to 3 hours
     // beyond it.
     private static final long DURATION_QUANTUM = ProcessStats.COMMIT_PERIOD;
-    protected static long[] sDurations = new long[] {
+    public  static long[] sDurations = new long[] {
         3 * 60 * 60 * 1000 - DURATION_QUANTUM / 2, 6 * 60 *60 * 1000 - DURATION_QUANTUM / 2,
         12 * 60 * 60 * 1000 - DURATION_QUANTUM / 2, 24 * 60 * 60 * 1000 - DURATION_QUANTUM / 2
     };

src/com/android/settings/development/DevelopmentSettingsDashboardFragment.java

@@ -352,6 +352,7 @@ public class DevelopmentSettingsDashboardFragment extends RestrictedDashboardFra
             Activity activity, Lifecycle lifecycle, DevelopmentSettingsDashboardFragment fragment,
             BluetoothA2dpConfigStore bluetoothA2dpConfigStore) {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
+        controllers.add(new MemoryUsagePreferenceController(context));
         controllers.add(new BugReportPreferenceControllerV2(context));
         controllers.add(new LocalBackupPasswordPreferenceController(context));
         controllers.add(new StayAwakePreferenceController(context, lifecycle));

src/com/android/settings/development/MemoryUsagePreferenceController.java

@@ -0,0 +1,78 @@
+/*
+ * 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.development;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.text.format.Formatter;
+
+import com.android.settings.R;
+import com.android.settings.applications.ProcStatsData;
+import com.android.settings.applications.ProcessStatsBase;
+import com.android.settings.core.PreferenceControllerMixin;
+import com.android.settingslib.development.DeveloperOptionsPreferenceController;
+
+public class MemoryUsagePreferenceController extends DeveloperOptionsPreferenceController implements
+        PreferenceControllerMixin {
+
+    private static final String MEMORY_USAGE_KEY = "memory";
+
+    private Preference mPreference;
+    private ProcStatsData mProcStatsData;
+
+    public MemoryUsagePreferenceController(Context context) {
+        super(context);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return MEMORY_USAGE_KEY;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+
+        mPreference = screen.findPreference(getPreferenceKey());
+        mProcStatsData = getProcStatsData();
+        setDuration();
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        mProcStatsData.refreshStats(true);
+        final ProcStatsData.MemInfo memInfo = mProcStatsData.getMemInfo();
+        final String usedResult = Formatter.formatShortFileSize(mContext,
+                (long) memInfo.realUsedRam);
+        final String totalResult = Formatter.formatShortFileSize(mContext,
+                (long) memInfo.realTotalRam);
+        mPreference.setSummary(mContext.getString(R.string.memory_summary,
+                usedResult, totalResult));
+    }
+
+    @VisibleForTesting
+    void setDuration() {
+        mProcStatsData.setDuration(ProcessStatsBase.sDurations[0] /* 3 hours */);
+    }
+
+    @VisibleForTesting
+    ProcStatsData getProcStatsData() {
+        return new ProcStatsData(mContext, false);
+    }
+}

tests/robotests/src/com/android/settings/development/MemoryUsagePreferenceControllerTest.java

@@ -0,0 +1,76 @@
+/*
+ * 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.development;
+
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.TestConfig;
+import com.android.settings.applications.ProcStatsData;
+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;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class MemoryUsagePreferenceControllerTest {
+
+    @Mock
+    private Preference mPreference;
+    @Mock
+    private PreferenceScreen mScreen;
+    @Mock
+    private ProcStatsData mProcStatsData;
+    @Mock
+    private ProcStatsData.MemInfo mMemInfo;
+
+    private Context mContext;
+    private MemoryUsagePreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = spy(new MemoryUsagePreferenceController(mContext));
+        doReturn(mProcStatsData).when(mController).getProcStatsData();
+        doNothing().when(mController).setDuration();
+        when(mScreen.findPreference(mController.getPreferenceKey())).thenReturn(mPreference);
+        when(mProcStatsData.getMemInfo()).thenReturn(mMemInfo);
+        mController.displayPreference(mScreen);
+    }
+
+    @Test
+    public void updateState_shouldUpdatePreferenceSummary() {
+        mController.updateState(mPreference);
+
+        verify(mPreference).setSummary(anyString());
+    }
+}