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<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<title>Canvas test: 2d.text.drawing.style.wordSpacing.change.font</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/html/canvas/resources/canvas-tests.js"></script>
<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
<body class="show_output">
<h1>2d.text.drawing.style.wordSpacing.change.font</h1>
<p class="desc">Set word spacing and word spacing to font dependent value and verify it works after font change.</p>
<p class="output">Actual output:</p>
<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
<ul id="d"></ul>
<script>
var t = async_test("Set word spacing and word spacing to font dependent value and verify it works after font change.");
_addTest(function(canvas, ctx) {
_assertSame(ctx.letterSpacing, '0px', "ctx.letterSpacing", "'0px'");
_assertSame(ctx.wordSpacing, '0px', "ctx.wordSpacing", "'0px'");
// Get the width for 'Hello World, again' at default size, 10px.
var width_normal = ctx.measureText('Hello World, again').width;
ctx.wordSpacing = '1em';
_assertSame(ctx.wordSpacing, '1em', "ctx.wordSpacing", "'1em'");
// 1em = 10px. Add 10px after each word in "Hello World, again",
// makes it 20px longer.
var width_with_spacing = ctx.measureText('Hello World, again').width;
_assertSame(width_with_spacing, width_normal + 20, "width_with_spacing", "width_normal + 20");
// Changing font to 20px. Without resetting the spacing, 1em wordSpacing
// is now 20px, so it's suppose to be 40px longer without any wordSpacing set.
ctx.font = '20px serif';
width_with_spacing = ctx.measureText('Hello World, again').width;
// Now calculate the reference spacing for "Hello World, again" with no spacing.
ctx.wordSpacing = '0em';
width_normal = ctx.measureText('Hello World, again').width;
_assertSame(width_with_spacing, width_normal + 40, "width_with_spacing", "width_normal + 40");
});
</script>
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