More settings button add test

/*

 * 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.emergency;

import static com.android.settings.core.BasePreferenceController.AVAILABLE;

import static com.android.settings.core.BasePreferenceController.UNSUPPORTED_ON_DEVICE;

import static com.google.common.truth.Truth.assertThat;

import android.content.Context;

import android.content.Intent;

import android.content.pm.ActivityInfo;

import android.content.pm.ApplicationInfo;

import android.content.pm.ResolveInfo;

import androidx.test.core.app.ApplicationProvider;

import com.android.settings.R;

import com.android.settings.testutils.shadow.SettingsShadowResources;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.Shadows;

import org.robolectric.annotation.Config;

import org.robolectric.shadows.ShadowPackageManager;

@RunWith(RobolectricTestRunner.class)

@Config(shadows = SettingsShadowResources.class)

public class MoreSettingsPreferenceControllerTest {

    private static final String TEST_PKG_NAME = "test_pkg";

    private static final String TEST_CLASS_NAME = "name";

    private static final Intent SETTING_INTENT = new Intent(Intent.ACTION_MAIN)

            .setPackage(TEST_PKG_NAME);

    private Context mContext;

    private ShadowPackageManager mPackageManager;

    private static final String PREF_KEY = "more_settings_button";

    @Before

    public void setUp() {

        mContext = ApplicationProvider.getApplicationContext();

        mPackageManager = Shadows.shadowOf(mContext.getPackageManager());

    }

    @After

    public void tearDown() {

        SettingsShadowResources.reset();

    }

    @Test

    public void constructor_hasPackageConfig_shouldSetIntent() {

        // Provide override package name and provide resolvable intent

        SettingsShadowResources.overrideResource(

                R.string.config_emergency_package_name,

                TEST_PKG_NAME);

        prepareCustomIntent();

        MoreSettingsPreferenceController controller = new MoreSettingsPreferenceController(

                mContext, PREF_KEY);

        assertThat(controller.mIntent).isNotNull();

    }

    @Test

    public void getAvailabilityStatus_whenIntentSet_shouldReturnAvailable() {

        // Provide override package name and provide resolvable intent

        SettingsShadowResources.overrideResource(

                R.string.config_emergency_package_name,

                TEST_PKG_NAME);

        prepareCustomIntent();

        MoreSettingsPreferenceController controller = new MoreSettingsPreferenceController(

                mContext, PREF_KEY);

        assertThat(controller.getAvailabilityStatus()).isEqualTo(AVAILABLE);

    }

    @Test

    public void getAvailabilityStatus_whenPackageConfigIsUnavailable_shouldReturnUnsupported() {

        // No package name is configured

        MoreSettingsPreferenceController controller = new MoreSettingsPreferenceController(

                mContext, PREF_KEY);

        assertThat(controller.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);

    }

    @Test

    public void getAvailabilityStatus_noSuitableIntent_shouldReturnUnsupportedDevice() {

        // Provide override package name but don't provide resolvable intent

        SettingsShadowResources.overrideResource(

                R.string.config_emergency_package_name,

                TEST_PKG_NAME);

        MoreSettingsPreferenceController controller = new MoreSettingsPreferenceController(

                mContext, PREF_KEY);

        assertThat(controller.mIntent).isNull();

        assertThat(controller.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);

    }

    @Test

    public void getAvailabilityStatus_intentForANonSystemApp_shouldReturnUnsupportedDevice() {

        // Provide override package name and provide resolvable intent for a non system app.

        SettingsShadowResources.overrideResource(

                R.string.config_emergency_package_name,

                TEST_PKG_NAME);

        prepareCustomIntentForANonSystemApp();

        MoreSettingsPreferenceController controller = new MoreSettingsPreferenceController(

                mContext, PREF_KEY);

        assertThat(controller.mIntent).isNull();

        assertThat(controller.getAvailabilityStatus()).isEqualTo(UNSUPPORTED_ON_DEVICE);

    }

    private void prepareCustomIntent() {

        final ResolveInfo info = new ResolveInfo();

        info.activityInfo = new ActivityInfo();

        info.activityInfo.packageName = TEST_PKG_NAME;

        info.activityInfo.name = TEST_CLASS_NAME;

        // Resolve to a system app.

        info.activityInfo.applicationInfo = new ApplicationInfo();

        info.activityInfo.applicationInfo.flags = ApplicationInfo.FLAG_SYSTEM;

        mPackageManager.addResolveInfoForIntent(SETTING_INTENT, info);

    }

    private void prepareCustomIntentForANonSystemApp() {

        final ResolveInfo info = new ResolveInfo();

        info.activityInfo = new ActivityInfo();

        info.activityInfo.packageName = TEST_PKG_NAME;

        info.activityInfo.name = TEST_CLASS_NAME;

        mPackageManager.addResolveInfoForIntent(SETTING_INTENT, info);

    }

}