Add unit test for RadioModule of AIDL radio client

/*

 * Copyright (C) 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 com.android.server.broadcastradio.aidl;

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

import static org.junit.Assert.assertThrows;

import static org.mockito.ArgumentMatchers.anyInt;

import static org.mockito.Matchers.any;

import static org.mockito.Mockito.verify;

import static org.mockito.Mockito.when;

import android.graphics.Bitmap;

import android.hardware.broadcastradio.IBroadcastRadio;

import android.hardware.radio.RadioManager;

import android.os.RemoteException;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.Mock;

import org.mockito.junit.MockitoJUnitRunner;

/**

 * Tests for AIDL HAL RadioModule.

 */

@RunWith(MockitoJUnitRunner.class)

public final class RadioModuleTest {

    // Mocks

    @Mock

    private IBroadcastRadio mBroadcastRadioMock;

    private final Object mLock = new Object();

    // RadioModule under test

    private RadioModule mRadioModule;

    @Before

    public void setup() throws RemoteException {

        mRadioModule = new RadioModule(mBroadcastRadioMock, new RadioManager.ModuleProperties(

                /* id= */ 0, /* serviceName= */ "", /* classId= */ 0, /* implementor= */ "",

                /* product= */ "", /* version= */ "", /* serial= */ "", /* numTuners= */ 0,

                /* numAudioSources= */ 0, /* isInitializationRequired= */ false,

                /* isCaptureSupported= */ false, /* bands= */ null, /* isBgScanSupported= */ false,

                /* supportedProgramTypes= */ new int[]{},

                /* supportedIdentifierTypes */ new int[]{},

                /* dabFrequencyTable= */ null, /* vendorInfo= */ null), mLock);

        // TODO(b/241118988): test non-null image for getImage method

        when(mBroadcastRadioMock.getImage(anyInt())).thenReturn(null);

    }

    @Test

    public void getService() {

        assertWithMessage("Service of radio module")

                .that(mRadioModule.getService()).isEqualTo(mBroadcastRadioMock);

    }

    @Test

    public void setInternalHalCallback_callbackSetInHal() throws RemoteException {

        mRadioModule.setInternalHalCallback();

        verify(mBroadcastRadioMock).setTunerCallback(any());

    }

    @Test

    public void getImage_withValidIdFromRadioModule() {

        int imageId = 1;

        Bitmap imageTest = mRadioModule.getImage(imageId);

        assertWithMessage("Image got from radio module").that(imageTest).isNull();

    }

    @Test

    public void getImage_withInvalidIdFromRadioModule_throwsIllegalArgumentException() {

        int invalidImageId = IBroadcastRadio.INVALID_IMAGE;

        IllegalArgumentException thrown = assertThrows(IllegalArgumentException.class, () -> {

            mRadioModule.getImage(invalidImageId);

        });

        assertWithMessage("Exception for getting image with invalid ID")

                .that(thrown).hasMessageThat().contains("Image ID is missing");

    }

}