LayoutTests/fast/canvas/canvas-context-attributes-default-value.html - Issue 290143007: canvas.getContext with alpha:undefined should behave like alpha:true

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Side by Side Diff: LayoutTests/fast/canvas/canvas-context-attributes-default-value.html

Issue 290143007: canvas.getContext with alpha:undefined should behave like alpha:true (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Created 6 years, 7 months ago

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	1 <!DOCTYPE html>

	2 <html>

	3 <head>

	4 <script src="../../resources/js-test.js"></script>

	5 <script>

	6

	7 var checkAttributes = {

	8 alpha : true,

	9 };

	10

	11 function testAttributes(expectedAttributes, checkValue) {

	12

	13 if (arguments.length != 1 && arguments.length != 2)

	14 return;

	15

	16 var canvas = document.createElement("canvas");

	17 var initialAttributes = {};

	18 var isUndefinedOrNull = arguments.length == 2 &&

	19 (checkValue == undefined \|\| checkValue == null);

	20

	21 if (isUndefinedOrNull)

	22 for (key in expectedAttributes)

	23 initialAttributes[key] = checkValue;

	24

	25 var context = canvas.getContext("2d", initialAttributes);

	26

	27 window.actualContextAttributes = context.getContextAttributes();

	28

	29 for (key in expectedAttributes)

	30 shouldBe("actualContextAttributes." + key,

	31 expectedAttributes[key].toString());

	32 }

	33

	34 </script>

	35 </head>

	36 <body>

	37 <script>

	38

	39 debug("Testing default value:");

	40 testAttributes(checkAttributes);

	41 debug("")

	42

	43 debug("Testing undefined value:");

	44 testAttributes(checkAttributes, undefined);

	45 debug("")

	46

	47 debug("Testing null value:");

	48 testAttributes(checkAttributes, null);

	49 debug("")

	50

	51 </script>

	52 </body>

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