Add tests for QRCodeScannerPreferenceController

/*

 * 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.display;

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.ContentResolver;

import android.content.Context;

import android.provider.Settings;

import androidx.preference.Preference;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.MockitoAnnotations;

import org.robolectric.RobolectricTestRunner;

import org.robolectric.RuntimeEnvironment;

@RunWith(RobolectricTestRunner.class)

public class QRCodeScannerPreferenceControllerTest {

    private static final String TEST_KEY = "test_key";

    private static final String SETTING_KEY = Settings.Secure.LOCK_SCREEN_SHOW_QR_CODE_SCANNER;

    private static final String DEFAULT_COMPONENT =

            Settings.Secure.SHOW_QR_CODE_SCANNER_SETTING;

    private Context mContext;

    private ContentResolver mContentResolver;

    private QRCodeScannerPreferenceController mController;

    @Mock

    private Preference mPreference;

    @Before

    public void setUp() {

        MockitoAnnotations.initMocks(this);

        mContext = RuntimeEnvironment.application;

        mContentResolver = mContext.getContentResolver();

        mController = new QRCodeScannerPreferenceController(mContext, TEST_KEY);

    }

    @Test

    public void isChecked_SettingIs1_returnTrue() {

        Settings.Secure.putInt(mContentResolver, SETTING_KEY, 1);

        assertThat(mController.isChecked()).isTrue();

    }

    @Test

    public void isChecked_SettingIs0_returnFalse() {

        Settings.Secure.putInt(mContentResolver, SETTING_KEY, 0);

        assertThat(mController.isChecked()).isFalse();

    }

    @Test

    public void isChecked_SettingIsNotSet_returnFalse() {

        Settings.Secure.putString(mContentResolver, SETTING_KEY, null);

        assertThat(mController.isChecked()).isFalse();

    }

    @Test

    public void setChecked_true_SettingIsNot0() {

        mController.setChecked(true);

        assertThat(Settings.Secure.getInt(mContentResolver, SETTING_KEY, 0)).isNotEqualTo(0);

    }

    @Test

    public void setChecked_false_SettingIs0() {

        mController.setChecked(false);

        assertThat(Settings.Secure.getInt(mContentResolver, SETTING_KEY, 0)).isEqualTo(0);

    }

    @Test

    public void getAvailabilityStatus_defaultComponentNotSet() {

        Settings.Secure.putString(mContext.getContentResolver(), DEFAULT_COMPONENT, null);

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

    }

    @Test

    public void getAvailabilityStatus_defaultComponentSet() {

        Settings.Secure.putString(mContext.getContentResolver(), DEFAULT_COMPONENT, "abc");

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

    }

}