Introduce SelectDebugAppPreferenceController

- Create new SelectDebugAppPreferenceController
 - Update onActivityResult to loop through all controllers
 - Add new activity request code
 - Create controller inside the DashboardFragment
 - Port logic from DevelopmentSettings into the controller

Bug: 34203528
Test: make RunSettingsRoboTests -j40
Change-Id: I90b1da2d536389e45d717adffb3b190ec13b9a2a

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

@@ -0,0 +1,145 @@
+/*
+ * 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 com.android.settings.development.DevelopmentOptionsActivityRequestCodes
+        .REQUEST_CODE_DEBUG_APP;
+
+import static com.google.common.truth.Truth.assertThat;
+
+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.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.provider.Settings;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+
+import com.android.settings.R;
+import com.android.settings.TestConfig;
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+import com.android.settingslib.wrapper.PackageManagerWrapper;
+
+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 SelectDebugAppPreferenceControllerTest {
+
+    @Mock
+    private Preference mPreference;
+    @Mock
+    private PreferenceScreen mPreferenceScreen;
+    @Mock
+    private DevelopmentSettingsDashboardFragment mFragment;
+    @Mock
+    private PackageManagerWrapper mPackageManagerWrapper;
+
+    private Context mContext;
+    private SelectDebugAppPreferenceController mController;
+
+    @Before
+    public void setup() {
+        MockitoAnnotations.initMocks(this);
+        mContext = RuntimeEnvironment.application;
+        mController = spy(new SelectDebugAppPreferenceController(mContext, mFragment));
+        ReflectionHelpers.setField(mController, "mPackageManager" /* field name */,
+                mPackageManagerWrapper);
+        when(mPreferenceScreen.findPreference(mController.getPreferenceKey())).thenReturn(
+                mPreference);
+        mController.displayPreference(mPreferenceScreen);
+    }
+
+    @Test
+    public void handlePreferenceTreeClick_preferenceClicked_launchActivity() {
+        final Intent activityStartIntent = new Intent(mContext, AppPicker.class);
+        final String preferenceKey = mController.getPreferenceKey();
+        doReturn(activityStartIntent).when(mController).getActivityStartIntent();
+        when(mPreference.getKey()).thenReturn(preferenceKey);
+        mController.handlePreferenceTreeClick(mPreference);
+
+        verify(mFragment).startActivityForResult(activityStartIntent, REQUEST_CODE_DEBUG_APP);
+    }
+
+    @Test
+    public void updateState_foobarAppSelected_shouldUpdateSummaryWithDebugAppLabel() {
+        final String debugApp = "foobar";
+        Settings.Global.putString(mContext.getContentResolver(), Settings.Global.DEBUG_APP,
+                debugApp);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(R.string.debug_app_set, debugApp));
+    }
+
+    @Test
+    public void updateState_noAppSelected_shouldUpdateSummaryWithNoAppSelected() {
+        final String debugApp = null;
+        Settings.Global.putString(mContext.getContentResolver(), Settings.Global.DEBUG_APP,
+                debugApp);
+        mController.updateState(mPreference);
+
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(R.string.debug_app_not_set));
+    }
+
+    @Test
+    public void onActivityResult_foobarAppSelected_shouldUpdateSummaryWithDebugLabel() {
+        Intent activityResultIntent = new Intent(mContext, AppPicker.class);
+        final String appLabel = "foobar";
+        activityResultIntent.setAction(appLabel);
+        final boolean result = mController.onActivityResult(REQUEST_CODE_DEBUG_APP,
+                Activity.RESULT_OK, activityResultIntent);
+
+        assertThat(result).isTrue();
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(R.string.debug_app_set, appLabel));
+    }
+
+    @Test
+    public void onActivityResult_badRequestCode_shouldReturnFalse() {
+        assertThat(mController.onActivityResult(
+                -1 /* requestCode */, -1 /* resultCode */, null /* intent */)).isFalse();
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchEnabled_shouldEnablePreference() {
+        mController.onDeveloperOptionsSwitchEnabled();
+
+        verify(mPreference).setEnabled(true);
+    }
+
+    @Test
+    public void onDeveloperOptionsSwitchDisabled_shouldDisablePreference() {
+        mController.onDeveloperOptionsSwitchDisabled();
+
+        verify(mPreference).setEnabled(false);
+        verify(mPreference).setSummary(
+                mContext.getResources().getString(R.string.debug_app_not_set));
+    }
+}