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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /dom/canvas/test/test_toDataURL_parameters.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-upstream/115.8.0esr.tar.xz firefox-esr-upstream/115.8.0esr.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/canvas/test/test_toDataURL_parameters.html')
| -rw-r--r-- | dom/canvas/test/test_toDataURL_parameters.html | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/dom/canvas/test/test_toDataURL_parameters.html b/dom/canvas/test/test_toDataURL_parameters.html new file mode 100644 index 0000000000..b288e4d329 --- /dev/null +++ b/dom/canvas/test/test_toDataURL_parameters.html @@ -0,0 +1,63 @@ +<!DOCTYPE HTML> +<title>Canvas test: toDataURL parameters (Bug 564388)</title> +<script src="/tests/SimpleTest/SimpleTest.js"></script> +<link rel="stylesheet" href="/tests/SimpleTest/test.css"> +<body> +<p> +This test covers the JPEG and webp quality parameter. If (when) the HTML5 spec changes the +allowed parameters for ToDataURL, new tests should go here. +</p> +<canvas id="c" width="100" height="100"><p class="fallback">FAIL (fallback content)</p></canvas> +<script> +let canvas = document.getElementById('c'); +let ctx = canvas.getContext("2d"); + +ctx.strokeStyle = '#FF0000'; +ctx.fillStyle = '#00FF00'; +ctx.fillRect(0, 0, 100, 100); +ctx.beginPath(); +ctx.moveTo(10, 10); +ctx.lineTo(90, 90); +ctx.stroke(); + +let pngData = canvas.toDataURL('image/png'); +let pngQuality = canvas.toDataURL('image/png', 0.1); +is(pngQuality, pngData, "Quality is not supported for PNG images"); + +function checkType(imagetype) { + let imageTypeString = 'image/' + imagetype; + let imageTypeUpperString = 'IMAGE/' + imagetype.toUpperCase(); + let data = canvas.toDataURL(imageTypeString); + if (data.match(new RegExp('^data:image\/' + imagetype + '[;,]'))) { + // Test the JPEG/wepb quality parameter + + let fullQuality = canvas.toDataURL(imageTypeString, 1.0); + let lowQuality = canvas.toDataURL(imageTypeString, 0.1); + isnot(lowQuality, fullQuality, "A low quality (0.1) should differ from high quality (1.0) " + imageTypeString); + + let medQuality = canvas.toDataURL(imageTypeString, 0.5); + isnot(medQuality, fullQuality, "A medium quality (0.5) should differ from high (1.0) " + imageTypeString); + isnot(medQuality, lowQuality, "A medium quality (0.5) should differ from low (0.5) " + imageTypeString); + + let tooHigh = canvas.toDataURL(imageTypeString, 2.0); + is(tooHigh, data, "Quality above 1.0 is treated as unspecified " + imageTypeString); + + let tooLow = canvas.toDataURL(imageTypeString, -1.0); + is(tooLow, data, "Quality below 0.0 is treated as unspecified " + imageTypeString); + + let lowQualityExtra = canvas.toDataURL(imageTypeString, 0.1, 'foo', 'bar', null); + is(lowQualityExtra, lowQuality, "Quality applies even if extra arguments are present " + imageTypeString); + + let lowQualityUppercase = canvas.toDataURL(imageTypeUpperString, 0.1); + is(lowQualityUppercase, lowQuality, "Quality applies to " + imageTypeString + " regardless of case"); + + let lowQualityString = canvas.toDataURL(imageTypeString, '0.1'); + isnot(lowQualityString, lowQuality, "Quality must be a number (should not be a string) " + imageTypeString); + } else { + ok(false, "should get a data url " + imageTypeString); + } +} + +checkType('jpeg'); +checkType('webp'); +</script> |