Add BluetoothAudioConfigTest am: 232c1fa6

/*

 * Copyright 2022 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 android.bluetooth;

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

import android.media.AudioFormat;

import android.os.Parcel;

import androidx.test.filters.SmallTest;

import androidx.test.runner.AndroidJUnit4;

import org.junit.Test;

import org.junit.runner.RunWith;

/**

 * Test cases for {@link BluetoothAudioConfig}.

 */

@SmallTest

@RunWith(AndroidJUnit4.class)

public class BluetoothAudioConfigTest {

    private static final int TEST_SAMPLE_RATE = 44;

    private static final int TEST_CHANNEL_COUNT = 1;

    @Test

    public void createBluetoothAudioConfig() {

        BluetoothAudioConfig audioConfig = new BluetoothAudioConfig(

                TEST_SAMPLE_RATE,

                TEST_CHANNEL_COUNT,

                AudioFormat.ENCODING_PCM_16BIT

        );

        assertThat(audioConfig.getSampleRate()).isEqualTo(TEST_SAMPLE_RATE);

        assertThat(audioConfig.getChannelConfig()).isEqualTo(TEST_CHANNEL_COUNT);

        assertThat(audioConfig.getAudioFormat()).isEqualTo(AudioFormat.ENCODING_PCM_16BIT);

    }

    @Test

    public void writeToParcel() {

        BluetoothAudioConfig originalConfig = new BluetoothAudioConfig(

                TEST_SAMPLE_RATE,

                TEST_CHANNEL_COUNT,

                AudioFormat.ENCODING_PCM_16BIT

        );

        Parcel parcel = Parcel.obtain();

        originalConfig.writeToParcel(parcel, 0);

        parcel.setDataPosition(0);

        BluetoothAudioConfig configOut = BluetoothAudioConfig.CREATOR.createFromParcel(parcel);

        parcel.recycle();

        assertThat(configOut.getSampleRate())

                .isEqualTo(originalConfig.getSampleRate());

        assertThat(configOut.getChannelConfig())

                .isEqualTo(originalConfig.getChannelConfig());

        assertThat(configOut.getAudioFormat())

                .isEqualTo(originalConfig.getAudioFormat());

    }

    @Test

    public void bluetoothAudioConfigHashCode() {

        BluetoothAudioConfig audioConfig = new BluetoothAudioConfig(

                TEST_SAMPLE_RATE,

                TEST_CHANNEL_COUNT,

                AudioFormat.ENCODING_PCM_16BIT

        );

        int hashCode = audioConfig.getSampleRate() | (audioConfig.getChannelConfig() << 24) | (

                audioConfig.getAudioFormat() << 28);

        int describeContents = 0;

        assertThat(audioConfig.hashCode()).isEqualTo(hashCode);

        assertThat(audioConfig.describeContents()).isEqualTo(describeContents);

    }

    @Test

    public void bluetoothAudioConfigToString() {

        BluetoothAudioConfig audioConfig = new BluetoothAudioConfig(

                TEST_SAMPLE_RATE,

                TEST_CHANNEL_COUNT,

                AudioFormat.ENCODING_PCM_16BIT

        );

        String audioConfigString = audioConfig.toString();

        String expectedToString = "{mSampleRate:" + audioConfig.getSampleRate()

                + ",mChannelConfig:" + audioConfig.getChannelConfig()

                + ",mAudioFormat:" + audioConfig.getAudioFormat() + "}";

        assertThat(audioConfigString).isEqualTo(expectedToString);

    }

}