scandit-sdk/src/lib/scanner.spec.ts

Scandit Barcode Scanner SDK for the Web

/* tslint:disable:no-implicit-dependencies no-any */
/* tslint:disable:insecure-random */
/**
 * Scanner tests
 */
import test from "ava";
import * as sinon from "sinon";

import {
  Barcode,
  BrowserHelper,
  configure,
  ImageSettings,
  Parser,
  ParserField,
  ParserResult,
  Scanner,
  ScanResult,
  ScanSettings
} from "..";

declare const global: any;

const postMessageStub: sinon.SinonStub = sinon.stub();
const terminateStub: sinon.SinonStub = sinon.stub();

const stubs: sinon.SinonStub[] = [postMessageStub, terminateStub];

global.Worker = sinon.stub().returns({
  postMessage: postMessageStub,
  terminate: terminateStub
});
URL.createObjectURL = sinon.stub();

function resetStubs(): void {
  stubs.forEach(mock => {
    mock.resetHistory();
  });
}

function checkBrowserCompatibility(): any {
  return {
    fullSupport: true,
    scannerSupport: true,
    missingFeatures: []
  };
}

async function prepareBrowserAndLibrary(): Promise<void> {
  BrowserHelper.checkBrowserCompatibility = checkBrowserCompatibility;
  await configure("#".repeat(64));
}

test.serial("constructor", async t => {
  let s: Scanner;
  let error: Error = t.throws(() => {
    s = new Scanner();
  });
  t.is(error.name, "UnsupportedBrowserError");

  BrowserHelper.checkBrowserCompatibility = checkBrowserCompatibility;

  error = t.throws(() => {
    s = new Scanner();
  });
  t.is(error.name, "LibraryNotConfiguredError");

  await configure("#".repeat(64));
  resetStubs();
  s = new Scanner();
  t.false(s.isReady());
  t.false(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 3);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      deviceId: BrowserHelper.getDeviceId(),
      deviceModelName: undefined,
      uaBrowserName: "WebKit",
      libraryLocation: "https://example.com/",
      path: "/",
      type: "load-library"
    }
  ]);
  t.deepEqual(postMessageStub.getCall(1).args, [
    {
      licenseKey: "#".repeat(64),
      type: "license-key"
    }
  ]);
  t.deepEqual(postMessageStub.getCall(2).args, [
    {
      settings: new ScanSettings().toJSONString(),
      type: "settings"
    }
  ]);
  resetStubs();
  const ss: ScanSettings = new ScanSettings({
    enabledSymbologies: Barcode.Symbology.QR,
    codeDuplicateFilter: 10,
    maxNumberOfCodesPerFrame: 10,
    searchArea: { x: 0.5, y: 0.5, width: 0.5, height: 0.1 }
  });
  s = new Scanner({
    scanSettings: ss
  });
  t.is(postMessageStub.callCount, 3);
  t.deepEqual(postMessageStub.getCall(2).args, [
    {
      settings: ss.toJSONString(),
      type: "settings"
    }
  ]);
  resetStubs();
  const is: ImageSettings = {
    width: 640,
    height: 480,
    format: ImageSettings.Format.RGBA_8U
  };
  s = new Scanner({
    imageSettings: is
  });
  t.is(postMessageStub.callCount, 4);
  t.deepEqual(postMessageStub.getCall(3).args, [
    {
      imageSettings: is,
      type: "image-settings"
    }
  ]);
});

test.serial("destroy", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  let s: Scanner = new Scanner();
  s.destroy();
  t.true(terminateStub.called);
  resetStubs();
  s = new Scanner();
  (<any>s).engineWorker = null;
  s.destroy();
  t.false(terminateStub.called);
});

test.serial("applyScanSettings", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const ss: ScanSettings = new ScanSettings({
    enabledSymbologies: Barcode.Symbology.QR,
    codeDuplicateFilter: 10,
    maxNumberOfCodesPerFrame: 10,
    searchArea: { x: 0.5, y: 0.5, width: 0.5, height: 0.1 }
  });
  const s: Scanner = new Scanner();
  t.is(postMessageStub.callCount, 3);
  t.deepEqual(postMessageStub.getCall(2).args, [
    {
      settings: new ScanSettings().toJSONString(),
      type: "settings"
    }
  ]);
  s.applyScanSettings(ss);
  t.is(postMessageStub.callCount, 4);
  t.deepEqual(postMessageStub.getCall(3).args, [
    {
      settings: ss.toJSONString(),
      type: "settings"
    }
  ]);
});

test.serial("applyImageSettings", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const is: ImageSettings = {
    width: 640,
    height: 480,
    format: ImageSettings.Format.RGBA_8U
  };
  const s: Scanner = new Scanner();
  t.is(postMessageStub.callCount, 3);
  t.deepEqual(postMessageStub.getCall(2).args, [
    {
      settings: new ScanSettings().toJSONString(),
      type: "settings"
    }
  ]);
  s.applyImageSettings(is);
  t.is(postMessageStub.callCount, 4);
  t.deepEqual(postMessageStub.getCall(3).args, [
    {
      imageSettings: is,
      type: "image-settings"
    }
  ]);
});

test.serial("clearSession", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const s: Scanner = new Scanner();
  t.is(postMessageStub.callCount, 3);
  s.clearSession();
  t.is(postMessageStub.callCount, 4);
  t.deepEqual(postMessageStub.getCall(3).args, [
    {
      type: "clear-session"
    }
  ]);
});

test.serial("addListener", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const s: Scanner = new Scanner();
  const onSpy: sinon.SinonSpy<["ready", () => void], Scanner> = sinon.spy(s, "on");
  const callbackSpy: sinon.SinonSpy = sinon.spy();
  s.addListener("ready", callbackSpy);
  t.true(onSpy.calledOnceWithExactly("ready", callbackSpy));
});

// Deprecated method
test.serial("onReady", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const s: Scanner = new Scanner();
  const onSpy: sinon.SinonSpy<["ready", () => void], Scanner> = sinon.spy(s, "on");
  const callbackSpy: sinon.SinonSpy = sinon.spy();
  s.onReady(callbackSpy);
  t.true(onSpy.calledOnceWithExactly("ready", callbackSpy));
});

test.serial("isReady & on ready", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  let s: Scanner = new Scanner();
  const callbackSpy1: sinon.SinonSpy = sinon.spy();
  const callbackSpy2: sinon.SinonSpy = sinon.spy();
  t.false(s.isReady());
  s.on("ready", callbackSpy1);
  s.on("ready", callbackSpy2);
  t.false(callbackSpy1.called);
  t.false(callbackSpy2.called);
  (<any>s).engineWorkerOnMessage({
    data: ["status", "example-not-ready"]
  });
  t.false(s.isReady());
  t.false(callbackSpy1.called);
  t.false(callbackSpy2.called);
  (<any>s).engineWorkerOnMessage({
    data: ["status", "ready"]
  });
  t.true(s.isReady());
  t.true(callbackSpy1.called);
  t.true(callbackSpy2.called);
  t.true(callbackSpy2.calledAfter(callbackSpy1));
  s = new Scanner();
  (<any>s).engineWorkerOnMessage({
    data: ["status", "ready"]
  });
  const callbackSpy3: sinon.SinonSpy = sinon.spy();
  t.true(s.isReady());
  s.on("ready", callbackSpy3);
  t.true(callbackSpy3.called);
});

// tslint:disable-next-line:max-func-body-length
test.serial("processImage calls", async t => {
  await prepareBrowserAndLibrary();
  const s: Scanner = new Scanner();
  resetStubs();
  let error: Error = await t.throwsAsync(s.processImage(new Uint8ClampedArray(0)));
  t.is(error.name, "NoImageSettings");
  t.is((<any>s).workerScanRequestId, 0);
  t.is((<any>s).workerScanQueueLength, 0);
  t.false(s.isBusyProcessing());
  t.false(postMessageStub.called);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: ImageSettings.Format.RGBA_8U
  });
  resetStubs();
  error = await t.throwsAsync(s.processImage(new Uint8ClampedArray(0)));
  t.is(error.name, "ImageSettingsDataMismatch");
  t.is((<any>s).workerScanRequestId, 0);
  t.is((<any>s).workerScanQueueLength, 0);
  t.false(s.isBusyProcessing());
  t.false(postMessageStub.called);
  resetStubs();
  let imageData: Uint8ClampedArray = Uint8ClampedArray.from({ length: 24 }, () => {
    return Math.floor(Math.random() * 255);
  });
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 3 * 2 * 4
  t.true(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 1,
      data: imageData,
      highQualitySingleFrameMode: false
    },
    [imageData.buffer]
  ]);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: ImageSettings.Format.RGB_8U
  });
  resetStubs();
  imageData = Uint8ClampedArray.from({ length: 18 }, () => {
    return Math.floor(Math.random() * 255);
  });
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 3 * 2 * 3
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 2,
      data: imageData,
      highQualitySingleFrameMode: false
    },
    [imageData.buffer]
  ]);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: ImageSettings.Format.GRAY_8U
  });
  resetStubs();
  imageData = Uint8ClampedArray.from({ length: 6 }, () => {
    return Math.floor(Math.random() * 255);
  });
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 3 * 2 * 1
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 3,
      data: imageData,
      highQualitySingleFrameMode: false
    },
    [imageData.buffer]
  ]);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: 999 // Fake format
  });
  resetStubs();
  imageData = Uint8ClampedArray.from({ length: 6 }, () => {
    return Math.floor(Math.random() * 255);
  });
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 3 * 2 * 1
  t.is((<any>s).workerScanRequestId, 4);
  t.is((<any>s).workerScanQueueLength, 4);
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 4,
      data: imageData,
      highQualitySingleFrameMode: false
    },
    [imageData.buffer]
  ]);
});

test.serial("processImage highQualitySingleFrameMode calls", async t => {
  await prepareBrowserAndLibrary();
  const s: Scanner = new Scanner();
  resetStubs();
  let error: Error = await t.throwsAsync(s.processImage(new Uint8ClampedArray(0), true));
  t.is(error.name, "NoImageSettings");
  t.is((<any>s).workerScanRequestId, 0);
  t.is((<any>s).workerScanQueueLength, 0);
  t.false(s.isBusyProcessing());
  t.false(postMessageStub.called);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: ImageSettings.Format.RGBA_8U
  });
  resetStubs();
  error = await t.throwsAsync(s.processImage(new Uint8ClampedArray(0), true));
  t.is(error.name, "ImageSettingsDataMismatch");
  t.is((<any>s).workerScanRequestId, 0);
  t.is((<any>s).workerScanQueueLength, 0);
  t.false(s.isBusyProcessing());
  t.false(postMessageStub.called);
  resetStubs();
  const imageData: Uint8ClampedArray = Uint8ClampedArray.from({ length: 24 }, () => {
    return Math.floor(Math.random() * 255);
  });
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData, true); // 3 * 2 * 4
  t.true(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 1,
      data: imageData,
      highQualitySingleFrameMode: true
    },
    [imageData.buffer]
  ]);
});

test.serial("processImage calls with ImageData", async t => {
  async function getImageFromCanvas(canvasElement: HTMLCanvasElement): Promise<HTMLImageElement> {
    return new Promise(resolve => {
      const image: HTMLImageElement = new Image();
      image.onload = () => {
        resolve(image);
      };
      image.src = canvasElement.toDataURL();
    });
  }

  await prepareBrowserAndLibrary();
  const s: Scanner = new Scanner();
  const canvas: HTMLCanvasElement = document.createElement("canvas");
  canvas.width = 3;
  canvas.height = 2;
  let imageData: HTMLImageElement = await getImageFromCanvas(canvas);
  s.applyImageSettings({
    width: 3,
    height: 2,
    format: ImageSettings.Format.RGBA_8U
  });
  resetStubs();
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 3 * 2 * 4
  t.true(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 1,
      data: new Uint8ClampedArray(3 * 2 * 4),
      highQualitySingleFrameMode: false
    },
    [new Uint8ClampedArray(3 * 2 * 4).buffer]
  ]);
  s.applyImageSettings({
    width: 5,
    height: 4,
    format: ImageSettings.Format.RGBA_8U
  });
  resetStubs();
  canvas.width = 5;
  canvas.height = 4;
  imageData = await getImageFromCanvas(canvas);
  // tslint:disable-next-line: no-floating-promises
  s.processImage(imageData); // 5 * 4 * 4
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: "work",
      requestId: 2,
      data: new Uint8ClampedArray(5 * 4 * 4),
      highQualitySingleFrameMode: false
    },
    [new Uint8ClampedArray(5 * 4 * 4).buffer]
  ]);
});

// tslint:disable-next-line:max-func-body-length
test.serial("processImage scan results", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const s: Scanner = new Scanner();
  const imageSettings: ImageSettings = {
    width: 3,
    height: 2,
    format: ImageSettings.Format.RGBA_8U
  };
  s.applyImageSettings(imageSettings);
  const imageData1: Uint8ClampedArray = Uint8ClampedArray.from({ length: 24 }, () => {
    return Math.floor(Math.random() * 255);
  });
  const processImage1: Promise<ScanResult> = s.processImage(imageData1); // 3 * 2 * 4
  t.true(s.isBusyProcessing());
  const imageData2: Uint8ClampedArray = Uint8ClampedArray.from({ length: 24 }, () => {
    return Math.floor(Math.random() * 255);
  });
  const processImage2: Promise<ScanResult> = s.processImage(imageData2); // 3 * 2 * 4
  const imageData3: Uint8ClampedArray = Uint8ClampedArray.from({ length: 24 }, () => {
    return Math.floor(Math.random() * 255);
  });
  const processImage3: Promise<ScanResult> = s.processImage(imageData3); // 3 * 2 * 4
  t.is((<any>s).workerScanRequestId, 3);
  t.is((<any>s).workerScanQueueLength, 3);
  (<any>s).engineWorkerOnMessage({
    data: [
      "work-error",
      {
        requestId: 2,
        error: {
          errorCode: 123,
          errorMessage: "example_error"
        }
      }
    ]
  });
  const error: Error = await t.throwsAsync(processImage2);
  t.deepEqual(error.message, "example_error (123)");
  t.is((<any>s).workerScanQueueLength, 2);
  (<any>s).engineWorkerOnMessage({
    data: [
      "work-result",
      {
        requestId: 1,
        result: {
          scanResult: [],
          matrixScanResult: {
            barcodesAppeared: [],
            barcodesUpdated: [],
            barcodesLost: [],
            barcodesPredicted: []
          }
        }
      }
    ]
  });
  let scanResult: ScanResult = await processImage1;
  t.deepEqual(scanResult, new ScanResult([], imageData1, imageSettings));
  t.is((<any>s).workerScanQueueLength, 1);
  (<any>s).engineWorkerOnMessage({
    data: [
      "work-result",
      {
        requestId: 3,
        result: {
          scanResult: [
            {
              symbology: Barcode.Symbology.QR,
              rawData: [97, 98, 99, 100],
              location: [[1, 2], [3, 4], [5, 6], [7, 8]],
              compositeFlag: Barcode.CompositeFlag.NONE,
              isGs1DataCarrier: false,
              encodingArray: [],
              isRecognized: true
            }
          ],
          matrixScanResult: {
            barcodesAppeared: [],
            barcodesUpdated: [],
            barcodesLost: [],
            barcodesPredicted: []
          }
        }
      }
    ]
  });
  scanResult = await processImage3;
  t.deepEqual(
    scanResult,
    new ScanResult(
      [
        {
          compositeFlag: Barcode.CompositeFlag.NONE,
          data: "abcd",
          encodingArray: [],
          isGs1DataCarrier: false,
          location: {
            bottomLeft: {
              x: 7,
              y: 8
            },
            bottomRight: {
              x: 5,
              y: 6
            },
            topLeft: {
              x: 1,
              y: 2
            },
            topRight: {
              x: 3,
              y: 4
            }
          },
          rawData: new Uint8Array([97, 98, 99, 100]),
          symbology: Barcode.Symbology.QR
        }
      ],
      imageData3,
      imageSettings
    )
  );
  t.is((<any>s).workerScanQueueLength, 0);
  (<any>s).engineWorkerOnMessage({
    data: []
  });
});

test.serial("getImageSettings", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const ss: ImageSettings = {
    width: 640,
    height: 480,
    format: ImageSettings.Format.RGBA_8U
  };
  const s: Scanner = new Scanner();
  t.is(s.getImageSettings(), undefined);
  s.applyImageSettings(ss);
  t.deepEqual(s.getImageSettings(), ss);
});

test.serial("getScanSettings", async t => {
  await prepareBrowserAndLibrary();
  resetStubs();
  const ss: ScanSettings = new ScanSettings({
    enabledSymbologies: Barcode.Symbology.QR,
    codeDuplicateFilter: 10,
    maxNumberOfCodesPerFrame: 10,
    searchArea: { x: 0.5, y: 0.5, width: 0.5, height: 0.1 }
  });
  const s: Scanner = new Scanner();
  t.deepEqual(s.getScanSettings(), new ScanSettings());
  s.applyScanSettings(ss);
  t.deepEqual(s.getScanSettings(), ss);
});

// tslint:disable-next-line:max-func-body-length
test.serial("createParserForFormat & parseString", async t => {
  const parseStringType: string = "parse-string";
  await prepareBrowserAndLibrary();
  const s: Scanner = new Scanner();
  resetStubs();
  const parser: Parser = s.createParserForFormat(Parser.DataFormat.DLID);
  t.not(parser, null);
  t.is((<any>s).workerParseRequestId, 0);
  t.false(s.isBusyProcessing());
  t.false(postMessageStub.called);
  const parseString1: Promise<ParserResult> = s.parseString(Parser.DataFormat.DLID, "abcd");
  t.is((<any>s).workerParseRequestId, 1);
  t.false(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: parseStringType,
      requestId: 1,
      dataFormat: Parser.DataFormat.DLID,
      dataString: "abcd",
      options: "{}"
    }
  ]);
  resetStubs();
  const parseString2: Promise<ParserResult> = s.parseString(Parser.DataFormat.GS1_AI, "efgh");
  t.is((<any>s).workerParseRequestId, 2);
  t.false(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: parseStringType,
      requestId: 2,
      dataFormat: Parser.DataFormat.GS1_AI,
      dataString: "efgh",
      options: "{}"
    }
  ]);
  resetStubs();
  const parseString3: Promise<ParserResult> = s.parseString(Parser.DataFormat.HIBC, "ijkl", {
    exampleOption: true
  });
  t.is((<any>s).workerParseRequestId, 3);
  t.false(s.isBusyProcessing());
  t.is(postMessageStub.callCount, 1);
  t.deepEqual(postMessageStub.getCall(0).args, [
    {
      type: parseStringType,
      requestId: 3,
      dataFormat: Parser.DataFormat.HIBC,
      dataString: "ijkl",
      options: '{"exampleOption":true}'
    }
  ]);
  resetStubs();
  (<any>s).engineWorkerOnMessage({
    data: [
      "parse-string-error",
      {
        requestId: 2,
        error: {
          errorCode: 123,
          errorMessage: "example_error"
        }
      }
    ]
  });
  const error: Error = await t.throwsAsync(parseString2);
  t.deepEqual(error.message, "example_error (123)");
  const resultData: ParserField[] = [
    {
      name: "field1",
      parsed: 1,
      rawString: "123"
    },
    {
      name: "field2",
      parsed: "abcd",
      rawString: "efgh"
    },
    {
      name: "field3",
      parsed: {
        subField1: 1,
        subField2: 2
      },
      rawString: "sf1sf2"
    }
  ];
  (<any>s).engineWorkerOnMessage({
    data: [
      "parse-string-result",
      {
        requestId: 1,
        result: JSON.stringify(resultData)
      }
    ]
  });
  let parserResult: ParserResult = await parseString1;
  const fieldsByName: { [fieldName: string]: ParserField } = {};
  resultData.forEach(parserField => {
    fieldsByName[parserField.name] = parserField;
  });
  t.deepEqual(parserResult, {
    fields: resultData,
    fieldsByName,
    jsonString: JSON.stringify(resultData)
  });
  (<any>s).engineWorkerOnMessage({
    data: [
      "parse-string-result",
      {
        requestId: 3,
        result: JSON.stringify([])
      }
    ]
  });
  parserResult = await parseString3;
  t.deepEqual(parserResult, {
    fields: [],
    fieldsByName: {},
    jsonString: JSON.stringify([])
  });
});

test.serial("onLicenseFeaturesReady", async t => {
  const licenseFeaturesType: string = "license-features";
  await prepareBrowserAndLibrary();
  resetStubs();
  const s: Scanner = new Scanner();
  const callbackSpy1: sinon.SinonSpy = sinon.spy();
  const callbackSpy2: sinon.SinonSpy = sinon.spy();
  const callbackSpy3: sinon.SinonSpy = sinon.spy();
  s.onLicenseFeaturesReady(callbackSpy1);
  s.onLicenseFeaturesReady(callbackSpy2);
  t.false(callbackSpy1.called);
  t.false(callbackSpy2.called);
  (<any>s).engineWorkerOnMessage({
    data: [licenseFeaturesType]
  });
  t.false(callbackSpy1.called);
  t.false(callbackSpy2.called);
  (<any>s).engineWorkerOnMessage({
    data: [
      licenseFeaturesType,
      {
        hiddenScanditLogoAllowed: true
      }
    ]
  });
  t.true(callbackSpy1.called);
  t.true(callbackSpy2.called);
  t.true(callbackSpy2.calledAfter(callbackSpy1));
  t.deepEqual(callbackSpy1.getCall(0).args, [
    {
      hiddenScanditLogoAllowed: true
    }
  ]);
  t.deepEqual(callbackSpy1.getCall(0).args, callbackSpy2.getCall(0).args);
  s.onLicenseFeaturesReady(callbackSpy3);
  t.true(callbackSpy3.called);
  t.deepEqual(callbackSpy1.getCall(0).args, callbackSpy3.getCall(0).args);
  callbackSpy1.resetHistory();
  callbackSpy2.resetHistory();
  callbackSpy3.resetHistory();
  (<any>s).engineWorkerOnMessage({
    data: [
      licenseFeaturesType,
      {
        hiddenScanditLogoAllowed: true
      }
    ]
  });
  t.false(callbackSpy1.called);
  t.false(callbackSpy2.called);
  t.false(callbackSpy3.called);
});