79 lines
2.7 KiB
HTML
79 lines
2.7 KiB
HTML
<html>
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<head>
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<style type="text/css">
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.pass { color: green; }
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.fail { color: red; }
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</style>
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<script>
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function printOut(msg)
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{
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var console = document.getElementById("console");
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var span = document.createElement('span');
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span.innerHTML = msg + '<br>';
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console.appendChild(span);
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}
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function resultStringifier(result)
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{
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if (result === "")
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return "<b>the empty string</b>";
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else if (result === undefined)
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return "<b>undefined</b>";
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else if (result === null)
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return "<b>null</b>";
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return "the string '" + result + "'";
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}
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function nullTestElementAttribute(elementType, element, attr, expected)
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{
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element[attr] = null;
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var result;
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if (element[attr] === expected)
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result = "<span class='pass'>TEST SUCCEEDED:</span> The value was " + resultStringifier(expected) + ".";
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else
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result = "<span class='fail'>TEST FAILED:</span> The value should have been " + resultStringifier(expected) + " but was " + resultStringifier(element[attr]) + ".";
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result += " [tested " + elementType + "." + attr + "]";
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printOut(result);
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}
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function runTests()
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{
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if (window.testRunner)
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testRunner.dumpAsText();
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var canvas = document.createElement('canvas');
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var context = canvas.getContext("2d");
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var listing = [
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{
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type: 'CanvasRenderingContext2D',
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elementToUse: context,
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attributes: [
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{name: 'globalCompositeOperation', expectedNull: 'source-over'},
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{name: 'lineCap', expectedNull: 'butt'},
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{name: 'lineJoin', expectedNull: 'miter'},
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{name: 'shadowColor', expectedNull: 'rgba(0, 0, 0, 0)'}
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]
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}
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];
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for (element in listing) {
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var type = listing[element].type;
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var elementToUse = listing[element].elementToUse;
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var attrs = listing[element].attributes;
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for (attr in attrs) {
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nullTestElementAttribute(type, elementToUse, attrs[attr].name, attrs[attr].expectedNull);
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}
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printOut('');
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}
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}
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</script>
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</head>
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<body onload="runTests()">
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<p>This test setting various attributes of a CanvasRenderingContext2D to JavaScript null.</p>
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<div id="console"></div>
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</body>
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</html>
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