var RGBAValues = [
  [42, 142, 23, 148],
  [234, 165, 177, 91],
  [74, 228, 75, 195],
  [140, 108, 73, 65],
  [25, 177, 3, 201],
  [127, 104, 12, 199],
  [196, 93, 240, 131],
  [250, 121, 231, 189],
  [175, 131, 215, 190],
  [145, 122, 166, 70],
  [18, 196, 210, 162],
  [225, 1, 90, 188],
  [223, 216, 182, 233],
  [115, 48, 168, 56],
  [50, 206, 198, 199],
  [152, 28, 70, 130],
  [176, 134, 133, 51],
  [148, 46, 43, 144],
  [78, 171, 141, 95],
  [24, 177, 102, 110],
  [0, 27, 127, 91],
  [31, 221, 41, 170],
  [85, 7, 218, 146],
  [65, 30, 198, 238],
  [121, 56, 123, 88],
  [246, 39, 140, 146],
  [174, 195, 254, 149],
  [29, 153, 92, 116],
  [17, 240, 5, 111],
  [38, 162, 84, 143],
  [237, 159, 201, 244],
  [93, 68, 14, 246],
  [143, 142, 82, 221],
  [187, 215, 243, 154],
  [24, 121, 220, 53],
  [80, 153, 151, 219],
  [202, 241, 250, 191],
];

function createOneTest(rgbaValue) {
  return new Promise(function(resolve, reject) {
    var tolerance = 5;
    var r = rgbaValue[0];
    var g = rgbaValue[1];
    var b = rgbaValue[2];
    var a = rgbaValue[3];
    var imageData = new ImageData(new Uint8ClampedArray([r, g, b, a]), 1, 1);

    var newImageData;
    createImageBitmap(imageData).then(
      function(imageBitmap) {
        var context = document.createElement("canvas").getContext("2d");
        context.drawImage(imageBitmap, 0, 0);
        newImageData = context.getImageData(0, 0, 1, 1);
        var newR = newImageData.data[0];
        var newG = newImageData.data[1];
        var newB = newImageData.data[2];
        var newA = newImageData.data[3];
        var isTheSame =
          Math.abs(r - newR) <= tolerance &&
          Math.abs(g - newG) <= tolerance &&
          Math.abs(b - newB) <= tolerance &&
          Math.abs(a - newA) <= tolerance;
        ok(
          isTheSame,
          "newImageData(" +
            newR +
            "," +
            newG +
            "," +
            newB +
            "," +
            newA +
            ") should equal to imageData(" +
            r +
            "," +
            g +
            "," +
            b +
            "," +
            a +
            ")." +
            "Premultiplied Alpha is handled while creating ImageBitmap from ImageData."
        );
        if (isTheSame) {
          resolve();
        } else {
          reject();
        }
      },
      function() {
        reject();
      }
    );
  });
}

function testBug1239752() {
  var tests = [];
  for (var i = 0; i < RGBAValues.length; ++i) {
    tests.push(createOneTest(RGBAValues[i]));
  }

  return Promise.all(tests);
}