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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/canvas/test/test_toDataURL_parameters.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/canvas/test/test_toDataURL_parameters.html')
| -rw-r--r-- | dom/canvas/test/test_toDataURL_parameters.html | 54 |
1 files changed, 54 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 000000000..2cc8b0bb7 --- /dev/null +++ b/dom/canvas/test/test_toDataURL_parameters.html @@ -0,0 +1,54 @@ +<!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 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> +var canvas = document.getElementById('c'); +var 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(); + +var pngData = canvas.toDataURL('image/png'); +var pngQuality = canvas.toDataURL('image/png', 0.1); +is(pngQuality, pngData, "Quality is not supported for PNG images"); + +var data = canvas.toDataURL('image/jpeg'); +if (data.match(/^data:image\/jpeg[;,]/)) { + // Test the JPEG quality parameter + + var fullQuality = canvas.toDataURL('image/jpeg', 1.0); + var lowQuality = canvas.toDataURL('image/jpeg', 0.1); + isnot(lowQuality, fullQuality, "A low quality (0.1) should differ from high quality (1.0)"); + + var medQuality = canvas.toDataURL('image/jpeg', 0.5); + isnot(medQuality, fullQuality, "A medium quality (0.5) should differ from high (1.0)"); + isnot(medQuality, lowQuality, "A medium quality (0.5) should differ from low (0.5)"); + + var tooHigh = canvas.toDataURL('image/jpeg', 2.0); + is(tooHigh, data, "Quality above 1.0 is treated as unspecified"); + + var tooLow = canvas.toDataURL('image/jpeg', -1.0); + is(tooLow, data, "Quality below 0.0 is treated as unspecified"); + + var lowQualityExtra = canvas.toDataURL('image/jpeg', 0.1, 'foo', 'bar', null); + is(lowQualityExtra, lowQuality, "Quality applies even if extra arguments are present"); + + var lowQualityUppercase = canvas.toDataURL('IMAGE/JPEG', 0.1); + is(lowQualityUppercase, lowQuality, "Quality applies to image/jpeg regardless of case"); + + var lowQualityString = canvas.toDataURL('image/jpeg', '0.1'); + isnot(lowQualityString, lowQuality, "Quality must be a number (should not be a string)"); +} +</script> |