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68 lines
2.3 KiB
HTML
68 lines
2.3 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<link rel="help" href="https://drafts.css-houdini.org/css-paint-api/">
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<link rel="match" href="parse-input-arguments-018-ref.html">
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<style>
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.container {
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width: 100px;
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height: 100px;
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}
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#canvas-geometry {
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background-image: paint(failureIndicator), paint(geometry);
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}
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</style>
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<script src="/common/reftest-wait.js"></script>
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<script src="/common/worklet-reftest.js"></script>
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<body>
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<p>This test result should show a green rect. The registerPaint('failureIndicator')
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will be called twice and the inputArguments will return two different strings,
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which will throw an exception and the paint function with 'failureIndicator'
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should never be called. In other words, there should be no red painted in the result.</p>
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<div id="canvas-geometry" class="container"></div>
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<script id="code" type="text/worklet">
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function generateRandString(length) {
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var text = "";
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var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
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for (var i = 0; i < length; i++)
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text += possible.charAt(Math.floor(Math.random() * possible.length));
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return text;
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}
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try {
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registerPaint('failureIndicator', class {
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static get inputArguments() {
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// This test is testing the case where an exception should be thrown
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// when two paint definitions with different properties are registered
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// to the same paint worklet. In order to do that, we randomly generate
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// the input properties here. We make the string length 100 to make sure
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// that it is veryyyyyyyyyyyy unlikely that two strings will be the same
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// when running this test.
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var current_str = generateRandString(100);
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return [current_str];
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}
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// The paint function here should never be called because the inputArguments
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// will generate two different properties, and that should throw an
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// exception.
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paint(ctx, geom) {
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ctx.fillStyle = 'red';
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ctx.fillRect(0, 0, 50, 50);
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}
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});
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} catch(ex) {
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}
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registerPaint('geometry', class {
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paint(ctx, geom) {
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ctx.fillStyle = 'green';
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ctx.fillRect(50, 50, 50, 50);
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}
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});
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</script>
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<script>
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importWorkletAndTerminateTestAfterAsyncPaint(CSS.paintWorklet, document.getElementById('code').textContent);
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</script>
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</body>
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</html>
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