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package com.xtremelabs.robolectric.shadows;
import android.graphics.Canvas;
import android.graphics.ImageFormat;
import android.graphics.Rect;
import android.hardware.Camera;
import android.view.Surface;
import android.view.SurfaceHolder;
import com.xtremelabs.robolectric.Robolectric;
import com.xtremelabs.robolectric.WithTestDefaultsRunner;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.CoreMatchers.sameInstance;
import static org.junit.Assert.assertThat;
@RunWith(WithTestDefaultsRunner.class)
public class CameraTest {
private Camera camera;
private ShadowCamera shadowCamera;
@Before
public void setUp() throws Exception {
camera = Camera.open();
shadowCamera = Robolectric.shadowOf(camera);
}
@After
public void tearDown() throws Exception {
ShadowCamera.clearCameraInfo();
}
@Test
public void testOpen() throws Exception {
assertThat(camera, notNullValue());
}
@Test
public void testUnlock() throws Exception {
assertThat(shadowCamera.isLocked(), equalTo(true));
camera.unlock();
assertThat(shadowCamera.isLocked(), equalTo(false));
}
@Test
public void testReconnect() throws Exception {
camera.unlock();
assertThat(shadowCamera.isLocked(), equalTo(false));
camera.reconnect();
assertThat(shadowCamera.isLocked(), equalTo(true));
}
@Test
public void testGetParameters() throws Exception {
Camera.Parameters parameters = camera.getParameters();
assertThat(parameters, notNullValue());
assertThat(parameters.getSupportedPreviewFormats(), notNullValue());
assertThat(parameters.getSupportedPreviewFormats().size(), not(equalTo(0)));
}
@Test
public void testSetParameters() throws Exception {
Camera.Parameters parameters = camera.getParameters();
assertThat(parameters.getPreviewFormat(), equalTo(ImageFormat.NV21));
parameters.setPreviewFormat(ImageFormat.JPEG);
camera.setParameters(parameters);
assertThat(camera.getParameters().getPreviewFormat(), equalTo(ImageFormat.JPEG));
}
@Test
public void testSetPreviewDisplay() throws Exception {
SurfaceHolder previewSurfaceHolder = new TestSurfaceHolder();
camera.setPreviewDisplay(previewSurfaceHolder);
assertThat(shadowCamera.getPreviewDisplay(), sameInstance(previewSurfaceHolder));
}
@Test
public void testStartPreview() throws Exception {
assertThat(shadowCamera.isPreviewing(), equalTo(false));
camera.startPreview();
assertThat(shadowCamera.isPreviewing(), equalTo(true));
}
@Test
public void testStopPreview() throws Exception {
camera.startPreview();
assertThat(shadowCamera.isPreviewing(), equalTo(true));
camera.stopPreview();
assertThat(shadowCamera.isPreviewing(), equalTo(false));
}
@Test
public void testRelease() throws Exception {
assertThat(shadowCamera.isReleased(), equalTo(false));
camera.release();
assertThat(shadowCamera.isReleased(), equalTo(true));
}
@Test
public void testSetPreviewCallbacks() throws Exception {
TestPreviewCallback callback = new TestPreviewCallback();
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setPreviewCallback(callback);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, sameInstance(camera));
assertThat(callback.data, equalTo("foobar".getBytes()));
}
@Test
public void testSetOneShotPreviewCallbacks() throws Exception {
TestPreviewCallback callback = new TestPreviewCallback();
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setOneShotPreviewCallback(callback);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, sameInstance(camera));
assertThat(callback.data, equalTo("foobar".getBytes()));
}
@Test
public void testPreviewCallbacksWithBuffers() throws Exception {
TestPreviewCallback callback = new TestPreviewCallback();
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setPreviewCallbackWithBuffer(callback);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, sameInstance(camera));
assertThat(callback.data, equalTo("foobar".getBytes()));
}
@Test
public void testClearPreviewCallback() throws Exception {
TestPreviewCallback callback = new TestPreviewCallback();
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setPreviewCallback(callback);
camera.setPreviewCallback(null);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setOneShotPreviewCallback(callback);
camera.setOneShotPreviewCallback(null);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
camera.setPreviewCallbackWithBuffer(callback);
camera.setPreviewCallbackWithBuffer(null);
shadowCamera.invokePreviewCallback("foobar".getBytes());
assertThat(callback.camera, nullValue());
assertThat(callback.data, nullValue());
}
@Test
public void testCameraInfoNoCameras() throws Exception {
assertThat(Camera.getNumberOfCameras(), equalTo(0));
}
@Test
public void testCameraInfoBackOnly() throws Exception {
Camera.CameraInfo cameraQuery = new Camera.CameraInfo();
addBackCamera();
Camera.getCameraInfo(0, cameraQuery);
assertThat(Camera.getNumberOfCameras(), equalTo(1));
assertThat(cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_BACK));
assertThat(cameraQuery.orientation, equalTo(0));
}
@Test
public void testCameraInfoBackAndFront() throws Exception {
Camera.CameraInfo cameraQuery = new Camera.CameraInfo();
addBackCamera();
addFrontCamera();
assertThat( Camera.getNumberOfCameras(), equalTo(2) );
Camera.getCameraInfo(0, cameraQuery);
assertThat( cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_BACK) );
assertThat( cameraQuery.orientation, equalTo(0) );
Camera.getCameraInfo(1, cameraQuery);
assertThat( cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_FRONT) );
assertThat( cameraQuery.orientation, equalTo(90) );
}
private void addBackCamera() {
Camera.CameraInfo frontCamera = new Camera.CameraInfo();
frontCamera.facing = Camera.CameraInfo.CAMERA_FACING_BACK;
frontCamera.orientation = 0;
ShadowCamera.addCameraInfo(0, frontCamera);
}
private void addFrontCamera() {
Camera.CameraInfo backCamera = new Camera.CameraInfo();
backCamera.facing = Camera.CameraInfo.CAMERA_FACING_FRONT;
backCamera.orientation = 90;
ShadowCamera.addCameraInfo(1, backCamera);
}
private class TestPreviewCallback implements Camera.PreviewCallback {
public Camera camera = null;
public byte[] data = null;
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
this.data = data;
this.camera = camera;
}
}
private class TestSurfaceHolder implements SurfaceHolder {
@Override
public void addCallback(Callback callback) {
}
@Override
public Surface getSurface() {
return null;
}
@Override
public Rect getSurfaceFrame() {
return null;
}
@Override
public boolean isCreating() {
return false;
}
@Override
public Canvas lockCanvas() {
return null;
}
@Override
public Canvas lockCanvas(Rect dirty) {
return null;
}
@Override
public void removeCallback(Callback callback) {
}
@Override
public void setFixedSize(int width, int height) {
}
@Override
public void setFormat(int format) {
}
@Override
public void setKeepScreenOn(boolean screenOn) {
}
@Override
public void setSizeFromLayout() {
}
@Override
public void setType(int type) {
}
@Override
public void unlockCanvasAndPost(Canvas canvas) {
}
}
}
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