The shapedetection-helpers.js tests require implementations of
the FaceDetectionTest, BarcodeDetectionTest and TextDetectionTest
interfaces, which should emulate platform shape detection backends.
The FaceDetectionTest interface is defined as:
class FaceDetectionTest {
async initialize(); // Sets up the testing environment.
async reset(); // Frees the resources.
MockFaceDetectionProvider(); //Returns `MockFaceDetectionProvider` interface.
};
class MockFaceDetectionProvider {
getFrameData(); //Gets frame data of detection result.
getMaxDetectedFaces(); //Gets value of `maxDetectedFaces` in `FaceDetector` constructor
getFastMode(); //Gets value of `fastMode` in `FaceDetector` constructor
};
The Chromium implementation of the FaceDetectionTest interface is located in
mock-facedetection.js.
The BarcodeDetectionTest interface is defined as:
class BarcodeDetectionTest {
async initialize(); // Sets up the testing environment.
async reset(); // Frees the resources.
MockBarcodeDetectionProvider(); //Returns `MockBarcodeDetectionProvider` interface.
};
class MockBarcodeDetectionProvider {
async enumerateSupportedFormats(); //Enumerates supported formats
getFrameData(); //Gets frame data of detection result.
getFormats(); //Gets value of `formats` in `BarcodeDetector` constructor
simulateNoImplementation(); // simulate a 'no implementation available' case
};
The Chromium implementation of the BarcodeDetectionTest interface is located in
mock-barcodedetection.js.
The TextDetectionTest interface is defined as:
class TextDetectionTest {
async initialize(); // Sets up the testing environment.
async reset(); // Frees the resources.
MockTextDetection(); //Returns `MockTextDetection` interface.
};
class MockTextDetection {
getFrameData(); //Gets frame data of detection result.
};
The Chromium implementation of the TextDetectionTest interface is located in
mock-textdetection.js.
Other browser vendors should provide their own implementations of
the FaceDetectionTest, BarcodeDetectionTest and TextDetectionTest
interfaces.