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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.gradient.object.invalidcolour</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<h1>2d.gradient.object.invalidcolour</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');
var g = ctx.createLinearGradient(0, 0, 100, 0);
assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, ""); });
assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, 'null'); });
assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, 'undefined'); });
assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, null); });
assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, undefined); });
t.done();
});
</script>