1 package com.xtremelabs.robolectric.shadows; 2 3 4 import android.graphics.Canvas; 5 import android.graphics.ImageFormat; 6 import android.graphics.Rect; 7 import android.hardware.Camera; 8 import android.view.Surface; 9 import android.view.SurfaceHolder; 10 import com.xtremelabs.robolectric.Robolectric; 11 import com.xtremelabs.robolectric.WithTestDefaultsRunner; 12 13 import org.junit.After; 14 import org.junit.Before; 15 import org.junit.Test; 16 import org.junit.runner.RunWith; 17 18 import static org.hamcrest.CoreMatchers.equalTo; 19 import static org.hamcrest.CoreMatchers.not; 20 import static org.hamcrest.CoreMatchers.notNullValue; 21 import static org.hamcrest.CoreMatchers.nullValue; 22 import static org.hamcrest.CoreMatchers.sameInstance; 23 import static org.junit.Assert.assertThat; 24 25 @RunWith(WithTestDefaultsRunner.class) 26 public class CameraTest { 27 28 private Camera camera; 29 private ShadowCamera shadowCamera; 30 31 @Before 32 public void setUp() throws Exception { 33 camera = Camera.open(); 34 shadowCamera = Robolectric.shadowOf(camera); 35 } 36 37 @After 38 public void tearDown() throws Exception { 39 ShadowCamera.clearCameraInfo(); 40 } 41 42 @Test 43 public void testOpen() throws Exception { 44 assertThat(camera, notNullValue()); 45 } 46 47 @Test 48 public void testUnlock() throws Exception { 49 assertThat(shadowCamera.isLocked(), equalTo(true)); 50 camera.unlock(); 51 assertThat(shadowCamera.isLocked(), equalTo(false)); 52 } 53 54 @Test 55 public void testReconnect() throws Exception { 56 camera.unlock(); 57 assertThat(shadowCamera.isLocked(), equalTo(false)); 58 camera.reconnect(); 59 assertThat(shadowCamera.isLocked(), equalTo(true)); 60 } 61 62 @Test 63 public void testGetParameters() throws Exception { 64 Camera.Parameters parameters = camera.getParameters(); 65 assertThat(parameters, notNullValue()); 66 assertThat(parameters.getSupportedPreviewFormats(), notNullValue()); 67 assertThat(parameters.getSupportedPreviewFormats().size(), not(equalTo(0))); 68 } 69 70 @Test 71 public void testSetParameters() throws Exception { 72 Camera.Parameters parameters = camera.getParameters(); 73 assertThat(parameters.getPreviewFormat(), equalTo(ImageFormat.NV21)); 74 parameters.setPreviewFormat(ImageFormat.JPEG); 75 camera.setParameters(parameters); 76 assertThat(camera.getParameters().getPreviewFormat(), equalTo(ImageFormat.JPEG)); 77 } 78 79 @Test 80 public void testSetPreviewDisplay() throws Exception { 81 SurfaceHolder previewSurfaceHolder = new TestSurfaceHolder(); 82 camera.setPreviewDisplay(previewSurfaceHolder); 83 assertThat(shadowCamera.getPreviewDisplay(), sameInstance(previewSurfaceHolder)); 84 } 85 86 @Test 87 public void testStartPreview() throws Exception { 88 assertThat(shadowCamera.isPreviewing(), equalTo(false)); 89 camera.startPreview(); 90 assertThat(shadowCamera.isPreviewing(), equalTo(true)); 91 } 92 93 @Test 94 public void testStopPreview() throws Exception { 95 camera.startPreview(); 96 assertThat(shadowCamera.isPreviewing(), equalTo(true)); 97 camera.stopPreview(); 98 assertThat(shadowCamera.isPreviewing(), equalTo(false)); 99 } 100 101 @Test 102 public void testRelease() throws Exception { 103 assertThat(shadowCamera.isReleased(), equalTo(false)); 104 camera.release(); 105 assertThat(shadowCamera.isReleased(), equalTo(true)); 106 } 107 108 @Test 109 public void testSetPreviewCallbacks() throws Exception { 110 TestPreviewCallback callback = new TestPreviewCallback(); 111 assertThat(callback.camera, nullValue()); 112 assertThat(callback.data, nullValue()); 113 114 camera.setPreviewCallback(callback); 115 shadowCamera.invokePreviewCallback("foobar".getBytes()); 116 117 assertThat(callback.camera, sameInstance(camera)); 118 assertThat(callback.data, equalTo("foobar".getBytes())); 119 } 120 121 @Test 122 public void testSetOneShotPreviewCallbacks() throws Exception { 123 TestPreviewCallback callback = new TestPreviewCallback(); 124 assertThat(callback.camera, nullValue()); 125 assertThat(callback.data, nullValue()); 126 127 camera.setOneShotPreviewCallback(callback); 128 shadowCamera.invokePreviewCallback("foobar".getBytes()); 129 130 assertThat(callback.camera, sameInstance(camera)); 131 assertThat(callback.data, equalTo("foobar".getBytes())); 132 } 133 134 @Test 135 public void testPreviewCallbacksWithBuffers() throws Exception { 136 TestPreviewCallback callback = new TestPreviewCallback(); 137 assertThat(callback.camera, nullValue()); 138 assertThat(callback.data, nullValue()); 139 140 camera.setPreviewCallbackWithBuffer(callback); 141 shadowCamera.invokePreviewCallback("foobar".getBytes()); 142 143 assertThat(callback.camera, sameInstance(camera)); 144 assertThat(callback.data, equalTo("foobar".getBytes())); 145 } 146 147 @Test 148 public void testClearPreviewCallback() throws Exception { 149 TestPreviewCallback callback = new TestPreviewCallback(); 150 assertThat(callback.camera, nullValue()); 151 assertThat(callback.data, nullValue()); 152 153 camera.setPreviewCallback(callback); 154 camera.setPreviewCallback(null); 155 156 shadowCamera.invokePreviewCallback("foobar".getBytes()); 157 assertThat(callback.camera, nullValue()); 158 assertThat(callback.data, nullValue()); 159 160 camera.setOneShotPreviewCallback(callback); 161 camera.setOneShotPreviewCallback(null); 162 163 shadowCamera.invokePreviewCallback("foobar".getBytes()); 164 assertThat(callback.camera, nullValue()); 165 assertThat(callback.data, nullValue()); 166 167 camera.setPreviewCallbackWithBuffer(callback); 168 camera.setPreviewCallbackWithBuffer(null); 169 170 shadowCamera.invokePreviewCallback("foobar".getBytes()); 171 assertThat(callback.camera, nullValue()); 172 assertThat(callback.data, nullValue()); 173 } 174 175 @Test 176 public void testCameraInfoNoCameras() throws Exception { 177 assertThat(Camera.getNumberOfCameras(), equalTo(0)); 178 } 179 180 @Test 181 public void testCameraInfoBackOnly() throws Exception { 182 Camera.CameraInfo cameraQuery = new Camera.CameraInfo(); 183 184 addBackCamera(); 185 Camera.getCameraInfo(0, cameraQuery); 186 187 assertThat(Camera.getNumberOfCameras(), equalTo(1)); 188 assertThat(cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_BACK)); 189 assertThat(cameraQuery.orientation, equalTo(0)); 190 } 191 192 @Test 193 public void testCameraInfoBackAndFront() throws Exception { 194 Camera.CameraInfo cameraQuery = new Camera.CameraInfo(); 195 addBackCamera(); 196 addFrontCamera(); 197 198 assertThat( Camera.getNumberOfCameras(), equalTo(2) ); 199 Camera.getCameraInfo(0, cameraQuery); 200 assertThat( cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_BACK) ); 201 assertThat( cameraQuery.orientation, equalTo(0) ); 202 Camera.getCameraInfo(1, cameraQuery); 203 assertThat( cameraQuery.facing, equalTo(Camera.CameraInfo.CAMERA_FACING_FRONT) ); 204 assertThat( cameraQuery.orientation, equalTo(90) ); 205 } 206 207 private void addBackCamera() { 208 Camera.CameraInfo frontCamera = new Camera.CameraInfo(); 209 frontCamera.facing = Camera.CameraInfo.CAMERA_FACING_BACK; 210 frontCamera.orientation = 0; 211 ShadowCamera.addCameraInfo(0, frontCamera); 212 } 213 214 private void addFrontCamera() { 215 Camera.CameraInfo backCamera = new Camera.CameraInfo(); 216 backCamera.facing = Camera.CameraInfo.CAMERA_FACING_FRONT; 217 backCamera.orientation = 90; 218 ShadowCamera.addCameraInfo(1, backCamera); 219 } 220 221 private class TestPreviewCallback implements Camera.PreviewCallback { 222 public Camera camera = null; 223 public byte[] data = null; 224 225 @Override 226 public void onPreviewFrame(byte[] data, Camera camera) { 227 this.data = data; 228 this.camera = camera; 229 } 230 } 231 232 private class TestSurfaceHolder implements SurfaceHolder { 233 234 @Override 235 public void addCallback(Callback callback) { 236 } 237 238 @Override 239 public Surface getSurface() { 240 return null; 241 } 242 243 @Override 244 public Rect getSurfaceFrame() { 245 return null; 246 } 247 248 @Override 249 public boolean isCreating() { 250 return false; 251 } 252 253 @Override 254 public Canvas lockCanvas() { 255 return null; 256 } 257 258 @Override 259 public Canvas lockCanvas(Rect dirty) { 260 return null; 261 } 262 263 @Override 264 public void removeCallback(Callback callback) { 265 } 266 267 @Override 268 public void setFixedSize(int width, int height) { 269 } 270 271 @Override 272 public void setFormat(int format) { 273 } 274 275 @Override 276 public void setKeepScreenOn(boolean screenOn) { 277 } 278 279 @Override 280 public void setSizeFromLayout() { 281 } 282 283 @Override 284 public void setType(int type) { 285 } 286 287 @Override 288 public void unlockCanvasAndPost(Canvas canvas) { 289 } 290 } 291 } 292
