third_party/WebKit/LayoutTests/shapedetection/resources/mock-textdetection.js

"use strict";

class MockTextDetection {
  constructor() {
    this.bindingSet_ =
        new mojo.BindingSet(shapeDetection.mojom.TextDetection);

    this.interceptor_ = new MojoInterfaceInterceptor(
        shapeDetection.mojom.TextDetection.name);
    this.interceptor_.oninterfacerequest =
        e => this.bindingSet_.addBinding(this, e.handle);
    this.interceptor_.start();
  }

  detect(bitmap_data) {
    let receivedStruct = new Uint8Array(bitmap_data.pixel_data);
    this.buffer_data_ = new Uint32Array(receivedStruct.buffer);
    return Promise.resolve({
      results: [
        {
          rawValue : "cats",
          boundingBox: { x: 1.0, y: 1.0, width: 100.0, height: 100.0 }
        },
        {
          rawValue : "dogs",
          boundingBox: { x: 2.0, y: 2.0, width: 50.0, height: 50.0 }
        },
      ],
    });
  }

  getFrameData() {
    return this.buffer_data_;
  }
}

let mockTextDetection = new MockTextDetection();