Add unit tests for DevicePolicyEventLogger.

/*

 * Copyright (C) 2018 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.server.devicepolicy;

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

import static org.testng.Assert.assertThrows;

import android.app.admin.DevicePolicyEventLogger;

import android.content.ComponentName;

import androidx.test.runner.AndroidJUnit4;

import org.junit.Test;

import org.junit.runner.RunWith;

/**

 * Unit tests for {@link DevicePolicyEventLogger}.

 * <p/>

 * Run with <code>atest DevicePolicyEventLoggerTest</code>.

 */

@RunWith(AndroidJUnit4.class)

public class DevicePolicyEventLoggerTest {

    @Test

    public void testAllFields() {

        final DevicePolicyEventLogger eventLogger = DevicePolicyEventLogger

                .createEvent(5)

                .setBoolean(true)

                .setStrings("string1", "string2", "string3")

                .setAdmin(new ComponentName("com.test.package", ".TestAdmin"))

                .setInt(4321)

                .setTimePeriod(1234L);

        assertThat(eventLogger.getEventId()).isEqualTo(5);

        assertThat(eventLogger.getBoolean()).isTrue();

        assertThat(eventLogger.getStringArray())

                .isEqualTo(new String[] {"string1", "string2", "string3"});

        assertThat(eventLogger.getAdminPackageName()).isEqualTo("com.test.package");

        assertThat(eventLogger.getInt()).isEqualTo(4321);

        assertThat(eventLogger.getTimePeriod()).isEqualTo(1234L);

    }

    @Test

    public void testStrings() {

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setStrings("string1", "string2", "string3").getStringArray())

                .isEqualTo(new String[] {"string1", "string2", "string3"});

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setStrings("string1", new String[] {"string2", "string3"}).getStringArray())

                .isEqualTo(new String[] {"string1", "string2", "string3"});

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setStrings("string1", "string2", new String[] {"string3"}).getStringArray())

                .isEqualTo(new String[] {"string1", "string2", "string3"});

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setStrings((String) null).getStringArray())

                .isEqualTo(new String[] {null});

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setStrings((String[]) null).getStringArray())

                .isEqualTo(null);

        assertThrows(NullPointerException.class, () -> DevicePolicyEventLogger

                .createEvent(0)

                .setStrings("string1", "string2", null));

    }

    @Test

    public void testAdmins() {

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setAdmin("com.package.name")

                .getAdminPackageName())

                .isEqualTo("com.package.name");

        assertThat(DevicePolicyEventLogger

                .createEvent(0)

                .setAdmin(new ComponentName("com.package.name", ".TestAdmin"))

                .getAdminPackageName())

                .isEqualTo("com.package.name");

    }

    @Test

    public void testDefaultValues() {

        final DevicePolicyEventLogger eventLogger = DevicePolicyEventLogger

                .createEvent(0);

        assertThat(eventLogger.getEventId()).isEqualTo(0);

        assertThat(eventLogger.getBoolean()).isFalse();

        assertThat(eventLogger.getStringArray()).isEqualTo(null);

        assertThat(eventLogger.getAdminPackageName()).isEqualTo(null);

        assertThat(eventLogger.getInt()).isEqualTo(0);

        assertThat(eventLogger.getTimePeriod()).isEqualTo(0L);

    }

}