2008-03-10 00:35:37 -07:00
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<!DOCTYPE html>
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<html>
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<head>
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<script type="text/javascript">
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function stringify(a) {
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if (a)
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return a.toSource();
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return ''+a;
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}
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var args = [undefined, null, [], {}, 0, "0"];
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var stringArgs = args.map(stringify);
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function test_method(context, method, arity) {
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function testParams(existingParams, depth) {
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2012-12-21 03:47:52 -08:00
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for (var arg of stringArgs) {
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2008-03-10 00:35:37 -07:00
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var code = "context[method](" + existingParams + arg + ")";
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try {
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eval(code);
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} catch (ex) {
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// Exceptions are expected
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}
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if (depth < arity)
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testParams(existingParams + arg + ",", depth + 1);
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}
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}
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testParams("", 1);
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}
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function startTest() {
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var canvas = document.getElementById("img");
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var context = canvas.getContext('2d');;
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test_method(context, "getImageData", 4);
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test_method(context, "putImageData", 3);
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}
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</script>
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</head>
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<body onload="startTest()">
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<canvas id="img">No canvas support.</canvas>
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</body>
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</html>
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