Add test to verify regulatory info launches properly

/*

 * 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;

import static android.support.test.espresso.Espresso.onView;

import static android.support.test.espresso.assertion.ViewAssertions.matches;

import static android.support.test.espresso.matcher.RootMatchers.isDialog;

import static android.support.test.espresso.matcher.ViewMatchers.isDisplayed;

import static android.support.test.espresso.matcher.ViewMatchers.withId;

import static junit.framework.Assert.fail;

import android.app.Instrumentation;

import android.content.Context;

import android.content.Intent;

import android.content.pm.ResolveInfo;

import android.support.test.InstrumentationRegistry;

import android.support.test.filters.SmallTest;

import android.support.test.runner.AndroidJUnit4;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

@RunWith(AndroidJUnit4.class)

@SmallTest

public class RegulatoryInfoDisplayActivityTest {

    private Instrumentation mInstrumentation;

    private Intent mRegulatoryInfoIntent;

    @Before

    public void setUp() {

        mInstrumentation = InstrumentationRegistry.getInstrumentation();

        mRegulatoryInfoIntent = new Intent("android.settings.SHOW_REGULATORY_INFO")

                .addCategory(Intent.CATEGORY_DEFAULT)

                .setPackage(mInstrumentation.getTargetContext().getPackageName());

    }

    @Test

    public void resolveRegulatoryInfoIntent_intentShouldMatchConfig() {

        // Load intent from PackageManager and load config from Settings app

        final Context context = mInstrumentation.getTargetContext();

        final boolean hasRegulatoryInfo = context.getResources()

                .getBoolean(R.bool.config_show_regulatory_info);

        final ResolveInfo resolveInfo = mInstrumentation.getTargetContext().getPackageManager()

                .resolveActivity(mRegulatoryInfoIntent, 0 /* flags */);

        // Check config and intent both enable or both disabled.

        if (hasRegulatoryInfo && resolveInfo == null) {

            fail("Config enables regulatory info but there is no handling intent");

            return;

        }

        if (!hasRegulatoryInfo && resolveInfo != null) {

            fail("Config disables regulatory info but there is at least one handling intent");

            return;

        }

    }

    @Test

    public void launchRegulatoryInfo_shouldNotCrash() {

        final Context context = mInstrumentation.getTargetContext();

        final boolean hasRegulatoryInfo = context.getResources()

                .getBoolean(R.bool.config_show_regulatory_info);

        if (!hasRegulatoryInfo) {

            return;

        }

        // Launch intent

        mInstrumentation.startActivitySync(mRegulatoryInfoIntent);

        onView(withId(R.id.regulatoryInfo))

                .inRoot(isDialog())

                .check(matches(isDisplayed()));

    }

}