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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);
}
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