Add setting to allow configuration of long press home gesture

This allows configuration of long press home gesture on 2-/3-button navigation configurations. It allows the user to enable and disable the invocation of assistant app using said gesture.

Bug: 191888710
Test: Unit tests and on a physical device.
Change-Id: I18cb290058ac5c2a748d40802b942404f548b868

tests/robotests/src/com/android/settings/gestures/ButtonNavigationSettingsAssistControllerTest.java

@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2021 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.gestures;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.res.Resources;
+import android.provider.Settings;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+
+@RunWith(RobolectricTestRunner.class)
+public class ButtonNavigationSettingsAssistControllerTest {
+
+    private static final String KEY_LONG_PRESS_HOME_FOR_ASSIST =
+            "assistant_long_press_home_gesture";
+
+    private Context mContext;
+    private Resources mResources;
+    private ButtonNavigationSettingsAssistController mController;
+
+    @Before
+    public void setUp() {
+        mContext = spy(ApplicationProvider.getApplicationContext());
+        mResources = mock(Resources.class);
+        when(mContext.getResources()).thenReturn(mResources);
+
+        mController = new ButtonNavigationSettingsAssistController(
+                mContext, KEY_LONG_PRESS_HOME_FOR_ASSIST);
+    }
+
+    @Test
+    public void isChecked_valueUnknownDefaultTrue_shouldReturnTrue() {
+        when(mResources.getBoolean(
+                com.android.internal.R.bool.config_assistLongPressHomeEnabledDefault)).thenReturn(
+                true);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void isChecked_valueUnknownDefaultFalse_shouldReturnFalse() {
+        when(mResources.getBoolean(
+                com.android.internal.R.bool.config_assistLongPressHomeEnabledDefault)).thenReturn(
+                true);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void isChecked_valueTrue_shouldReturnTrue() {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.ASSIST_LONG_PRESS_HOME_ENABLED, 1);
+        assertThat(mController.isChecked()).isTrue();
+    }
+
+    @Test
+    public void isChecked_valueFalse_shouldReturnFalse() {
+        Settings.Secure.putInt(mContext.getContentResolver(),
+                Settings.Secure.ASSIST_LONG_PRESS_HOME_ENABLED, 0);
+        assertThat(mController.isChecked()).isFalse();
+    }
+
+    @Test
+    public void setChecked_valueFalse_shouldSetFalse() {
+        mController.setChecked(false);
+        assertThat(Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ASSIST_LONG_PRESS_HOME_ENABLED, -1)).isEqualTo(0);
+    }
+
+    @Test
+    public void setChecked_valueTrue_shouldSetTrue() {
+        mController.setChecked(true);
+        assertThat(Settings.Secure.getInt(mContext.getContentResolver(),
+                Settings.Secure.ASSIST_LONG_PRESS_HOME_ENABLED, -1)).isEqualTo(1);
+    }
+
+}

tests/robotests/src/com/android/settings/gestures/ButtonNavigationSettingsFragmentTest.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2021 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.gestures;
+
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_2BUTTON_OVERLAY;
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_MODE_3BUTTON_OVERLAY;
+
+import static com.google.common.truth.Truth.assertThat;
+
+import static org.robolectric.Shadows.shadowOf;
+
+import android.content.Context;
+import android.content.pm.PackageInfo;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RobolectricTestRunner;
+import org.robolectric.shadows.ShadowPackageManager;
+
+@RunWith(RobolectricTestRunner.class)
+public class ButtonNavigationSettingsFragmentTest {
+
+    @Test
+    public void getNonIndexableKeys_twoAndThreeButtonNavigationNotAvailable_allKeysNonIndexable() {
+        assertThat(ButtonNavigationSettingsFragment.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(
+                ApplicationProvider.getApplicationContext())).isNotEmpty();
+    }
+
+    @Test
+    public void getNonIndexableKeys_twoButtonNavigationAvailable_allKeysIndexable() {
+        addPackageToPackageManager(ApplicationProvider.getApplicationContext(),
+                NAV_BAR_MODE_2BUTTON_OVERLAY);
+        assertThat(ButtonNavigationSettingsFragment.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(
+                ApplicationProvider.getApplicationContext())).isEmpty();
+    }
+
+    @Test
+    public void getNonIndexableKeys_threeButtonNavigationAvailable_allKeysIndexable() {
+        addPackageToPackageManager(ApplicationProvider.getApplicationContext(),
+                NAV_BAR_MODE_3BUTTON_OVERLAY);
+        assertThat(ButtonNavigationSettingsFragment.SEARCH_INDEX_DATA_PROVIDER.getNonIndexableKeys(
+                ApplicationProvider.getApplicationContext())).isEmpty();
+    }
+
+    private static void addPackageToPackageManager(Context context, String pkg) {
+        ShadowPackageManager shadowPm = shadowOf(context.getPackageManager());
+        PackageInfo pi = new PackageInfo();
+        pi.packageName = pkg;
+        shadowPm.installPackage(pi);
+    }
+
+}

tests/robotests/src/com/android/settings/gestures/LongPressPowerButtonPreferenceControllerTest.java

@@ -152,9 +152,6 @@ public class LongPressPowerButtonPreferenceControllerTest {
         assertThat(Settings.Global.getInt(mContext.getContentResolver(),
                 Settings.Global.KEY_CHORD_POWER_VOLUME_UP, -1)).isEqualTo(
                 LongPressPowerButtonPreferenceController.KEY_CHORD_POWER_VOLUME_UP_GLOBAL_ACTIONS);
-        verify(mController.mAssistSwitch).setSummary(
-                getString(
-                        R.string.power_menu_summary_long_press_for_assist_enabled));
     }
 
     @Test