diff options
Diffstat (limited to 'toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js')
| -rw-r--r-- | toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js | 120 |
1 files changed, 12 insertions, 108 deletions
diff --git a/toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js b/toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js index e526f7fff1..8d78fb29eb 100644 --- a/toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js +++ b/toolkit/components/resistfingerprinting/tests/browser/browser_canvas_randomization.js @@ -39,29 +39,7 @@ var TEST_CASES = [ return [imageData.data, imageDataSecond.data]; }, - isDataRandomized(name, data1, data2, isCompareOriginal) { - let diffCnt = countDifferencesInUint8Arrays(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - - // The Canvas randomization adds at most 512 bits noise to the image data. - // We compare the image data arrays to see if they are different and the - // difference is within the range. - - // If we are compare two randomized arrays, the difference can be doubled. - let expected = isCompareOriginal - ? NUM_RANDOMIZED_CANVAS_BITS - : NUM_RANDOMIZED_CANVAS_BITS * 2; - - // The number of difference bits should never bigger than the expected - // number. It could be zero if the randomization is disabled. - Assert.lessOrEqual( - diffCnt, - expected, - "The number of noise bits is expected." - ); - - return diffCnt <= expected && diffCnt > 0; - }, + isDataRandomized: isDataRandomizedFuzzy, }, { name: "CanvasRenderingContext2D.getImageData().", @@ -88,29 +66,7 @@ var TEST_CASES = [ return [imageData.data, imageDataSecond.data]; }, - isDataRandomized(name, data1, data2, isCompareOriginal) { - let diffCnt = countDifferencesInUint8Arrays(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - - // The Canvas randomization adds at most 512 bits noise to the image data. - // We compare the image data arrays to see if they are different and the - // difference is within the range. - - // If we are compare two randomized arrays, the difference can be doubled. - let expected = isCompareOriginal - ? NUM_RANDOMIZED_CANVAS_BITS - : NUM_RANDOMIZED_CANVAS_BITS * 2; - - // The number of difference bits should never bigger than the expected - // number. It could be zero if the randomization is disabled. - Assert.lessOrEqual( - diffCnt, - expected, - "The number of noise bits is expected." - ); - - return diffCnt <= expected && diffCnt > 0; - }, + isDataRandomized: isDataRandomizedFuzzy, }, { name: "HTMLCanvasElement.toDataURL() with a 2d context", @@ -137,9 +93,7 @@ var TEST_CASES = [ return [dataURL, dataURLSecond]; }, - isDataRandomized(name, data1, data2) { - return data1 !== data2; - }, + isDataRandomized: isDataRandomizedNotEqual, }, { name: "HTMLCanvasElement.toDataURL() with a webgl context", @@ -170,9 +124,7 @@ var TEST_CASES = [ return [dataURL, dataURLSecond]; }, - isDataRandomized(name, data1, data2) { - return data1 !== data2; - }, + isDataRandomized: isDataRandomizedNotEqual, }, { name: "HTMLCanvasElement.toDataURL() with a bitmaprenderer context", @@ -208,9 +160,7 @@ var TEST_CASES = [ return [dataURL, dataURLSecond]; }, - isDataRandomized(name, data1, data2) { - return data1 !== data2; - }, + isDataRandomized: isDataRandomizedNotEqual, }, { name: "HTMLCanvasElement.toBlob() with a 2d context", @@ -253,11 +203,7 @@ var TEST_CASES = [ return [data, dataSecond]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "HTMLCanvasElement.toBlob() with a webgl context", @@ -298,11 +244,7 @@ var TEST_CASES = [ return [data, data]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "HTMLCanvasElement.toBlob() with a bitmaprenderer context", @@ -354,11 +296,7 @@ var TEST_CASES = [ return [data, dataSecond]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "OffscreenCanvas.convertToBlob() with a 2d context", @@ -382,11 +320,7 @@ var TEST_CASES = [ return [data, dataSecond]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "OffscreenCanvas.convertToBlob() with a webgl context", @@ -416,11 +350,7 @@ var TEST_CASES = [ return [data, dataSecond]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "OffscreenCanvas.convertToBlob() with a bitmaprenderer context", @@ -450,11 +380,7 @@ var TEST_CASES = [ return [data, dataSecond]; }, - isDataRandomized(name, data1, data2) { - let diffCnt = countDifferencesInArrayBuffers(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - return diffCnt > 0; - }, + isDataRandomized: isDataRandomizedGreaterThanZero, }, { name: "CanvasRenderingContext2D.getImageData() with a offscreen canvas", @@ -477,29 +403,7 @@ var TEST_CASES = [ return [imageData.data, imageDataSecond.data]; }, - isDataRandomized(name, data1, data2, isCompareOriginal) { - let diffCnt = countDifferencesInUint8Arrays(data1, data2); - info(`For ${name} there are ${diffCnt} bits are different.`); - - // The Canvas randomization adds at most 512 bits noise to the image data. - // We compare the image data arrays to see if they are different and the - // difference is within the range. - - // If we are compare two randomized arrays, the difference can be doubled. - let expected = isCompareOriginal - ? NUM_RANDOMIZED_CANVAS_BITS - : NUM_RANDOMIZED_CANVAS_BITS * 2; - - // The number of difference bits should never bigger than the expected - // number. It could be zero if the randomization is disabled. - Assert.lessOrEqual( - diffCnt, - expected, - "The number of noise bits is expected." - ); - - return diffCnt <= expected && diffCnt > 0; - }, + isDataRandomized: isDataRandomizedFuzzy, }, ]; |