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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.pattern.basic.zerocanvas</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.pattern.basic.zerocanvas</h1>
<p class="desc"></p>
<script>
var t = async_test("");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var canvas = new OffscreenCanvas(100, 50);
var ctx = canvas.getContext('2d');
canvas.width = 0;
canvas.height = 10;
_assertSame(canvas.width, 0, "canvas.width", "0");
_assertSame(canvas.height, 10, "canvas.height", "10");
assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
canvas.width = 10;
canvas.height = 0;
_assertSame(canvas.width, 10, "canvas.width", "10");
_assertSame(canvas.height, 0, "canvas.height", "0");
assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
canvas.width = 0;
canvas.height = 0;
_assertSame(canvas.width, 0, "canvas.width", "0");
_assertSame(canvas.height, 0, "canvas.height", "0");
assert_throws_dom("INVALID_STATE_ERR", function() { ctx.createPattern(canvas, 'repeat'); });
t.done();
});
</script>
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