detection-on-worker.https.worker.js

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This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /shape-detection/detection-on-worker.https.worker.html - WPT Dashboard Interop Dashboard

importScripts("/resources/testharness.js");

importScripts("/resources/test-only-api.js");

importScripts("resources/shapedetection-helpers.js");

'use strict';

// These tests verify that a Detector's detect() works on an

// ImageBitmap on workers.

const imageBitmapTests =

        createDetector: () => { return new FaceDetector(); },

        mockTestName: "FaceDetectionTest",

        resultSize: 3, // Number of faces

        detectorType: "Face"

},

        createDetector: () => { return new BarcodeDetector(); },

        mockTestName: "BarcodeDetectionTest",

        resultSize: 2, // Number of barcodes

        detectorType: "Barcode"

},

        createDetector: () => { return new TextDetector(); },

        mockTestName: "TextDetectionTest",

        resultSize: 2, // Number of text blocks

        detectorType: "Text"

];

for (let imageBitmapTest of imageBitmapTests) {

  // ImageBitmap is of transferable type and can be sent to and

  // tested on worker.

  detection_test(imageBitmapTest.mockTestName, async (t, detectionTest) => {

    const img = createTestImage();

    const theImageBitmap = await createImageBitmap(img);

    const detector = imageBitmapTest.createDetector();

    const detectionResult = await detector.detect(theImageBitmap);

    assert_equals(detectionResult.length, imageBitmapTest.resultSize,

      `Number of ${imageBitmapTest.detectorType}`);

  }, `${imageBitmapTest.detectorType} Detector detect(ImageBitmap) on worker`);

function createTestImage() {

  const image = new OffscreenCanvas(100, 50);

  const imgctx = image.getContext('2d');

  imgctx.fillStyle = "#F00";

  imgctx.fillRect(0, 0, 2, 2);

  imgctx.fillStyle = "#0F0";

  imgctx.fillRect(0, 0, 1, 1);

  return image;

done();