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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Transform Module Level 2: parsing rotate with valid values</title>
<link rel="help" href="https://drafts.csswg.org/css-transforms-2/#propdef-rotate">
<meta name="assert" content="rotate supports the full grammar 'none | <number>{3}? <angle>'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
</head>
<body>
<script>
// https://drafts.csswg.org/css-transforms-2/#individual-transform-serialization
// Serialize as the keyword none if and only if none was originally specified.
test_valid_value("rotate", "none");
// If a 2d rotation is specified, the property must serialize as just an <angle>.
test_valid_value("rotate", "0deg");
// If a 3d rotation is specified, the property must serialize with an axis specified.
test_valid_value("rotate", "100 200 300 400grad");
test_valid_value("rotate", "400grad 100 200 300", "100 200 300 400grad");
test_valid_value("rotate", "0 0 0 400grad", "0 0 0 400grad");
// If the axis is parallel with the x or y axis, it must serialize as the appropriate keyword.
test_valid_value("rotate", "x 400grad");
test_valid_value("rotate", "400grad x", "x 400grad");
test_valid_value("rotate", "0.5 0 0 400grad", "x 400grad");
test_valid_value("rotate", "1 0 0 400grad", "x 400grad");
test_valid_value("rotate", "y 400grad");
test_valid_value("rotate", "400grad y", "y 400grad");
test_valid_value("rotate", "0 0.5 0 400grad", "y 400grad");
test_valid_value("rotate", "0 1 0 400grad", "y 400grad");
// ...though if the axis is in the reverse direction, the angle is negated.
test_valid_value("rotate", "-0.5 0 0 400grad", "x -400grad");
test_valid_value("rotate", "-1 0 0 400grad", "x -400grad");
test_valid_value("rotate", "0 -0.5 0 400grad", "y -400grad");
test_valid_value("rotate", "0 -1 0 400grad", "y -400grad");
// If the axis is parallel with the z axis the property must serialize as just an <angle>.
test_valid_value("rotate", "400grad");
test_valid_value("rotate", "400grad z", "400grad");
test_valid_value("rotate", "0 0 0.5 400grad", "400grad");
test_valid_value("rotate", "0 0 1 400grad", "400grad");
test_valid_value("rotate", "0 0 -0.5 400grad", "-400grad");
test_valid_value("rotate", "0 0 -1 400grad", "-400grad");
</script>
</body>
</html>
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