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"tests: splitted Generate from CSS; if not supported pass test"

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This commit is contained in:
André Fiedler 2012-03-04 19:06:25 +00:00
parent f47f9025b7
commit e82d703288
3 changed files with 61 additions and 40 deletions
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1
tests/qunit/index.html
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@ -22,6 +22,7 @@
<script type="text/javascript" src="../../src/renderers/Canvas.js"></script>
<script src="unit/css.js"></script>
<script src="unit/generate.js"></script>
<style>

40
tests/qunit/unit/css.js
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@ -145,45 +145,5 @@ $(function() {
});
// TODO add backgroundPosition % tests
propsToTest['background-gradient'] = ["backgroundImage"];
numDivs['background-gradient'] = $('#backgroundGradients div').length;
test('background-gradient', propsToTest['background-gradient'].length * numDivs['background-gradient'], function() {
$('#backgroundGradients div').each(function(i, el) {
$.each(propsToTest['background-gradient'], function(s, prop) {
var src, img, canvas, ctx, id, data, len, red, green, blue, overallColor = 0;
src = _html2canvas.Util.getCSS(el, prop),
img = _html2canvas.Generate.Gradient(src, {
width: 50,
height: 50
});
canvas = document.createElement('canvas');
canvas.width = 50;
canvas.height = 50;
ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
id = ctx.getImageData(0, 0, 50, 50);
data = id.data;
len = data.length;
//console.log(img);
for (var i = 0; i < len; i += 4) {
red = data[i]; // red
green = data[i + 1]; // green
blue = data[i + 2]; // blue
// i+3 is alpha (the fourth element)
overallColor += (red + green + blue) / 3;
}
overallColor /= (len / 4);
QUnit.notEqual(overallColor, 255, 'No Background Gradient - CSS was ' + src);
});
});
});
});

60
tests/qunit/unit/generate.js Normal file
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@ -0,0 +1,60 @@
// declare vars (preventing JSHint messages)
var test = test || function(){},
QUnit = QUnit || {},
_html2canvas = _html2canvas || {};
module("Generate");
$(function() {
var propsToTest = {},
numDivs = {};
propsToTest['Generate.Gradient'] = ["backgroundImage"];
numDivs['Generate.Gradient'] = $('#backgroundGradients div').length;
test('Generate.Gradient', propsToTest['Generate.Gradient'].length * numDivs['Generate.Gradient'], function() {
$('#backgroundGradients div').each(function(i, el) {
$.each(propsToTest['Generate.Gradient'], function(s, prop) {
var src, img, canvas, ctx, id, data, len, red, green, blue, overallColor = 0;
src = _html2canvas.Util.getCSS(el, prop);
if (/^(-webkit|-o|-moz|-ms|linear)-/.test(src)) {
img = _html2canvas.Generate.Gradient(src, {
width: 50,
height: 50
});
canvas = document.createElement('canvas');
canvas.width = 50;
canvas.height = 50;
ctx = canvas.getContext('2d');
ctx.drawImage(img, 0, 0);
id = ctx.getImageData(0, 0, 50, 50);
data = id.data;
len = data.length;
//console.log(img);
for (var i = 0; i < len; i += 4) {
red = data[i]; // red
green = data[i + 1]; // green
blue = data[i + 2]; // blue
// i+3 is alpha (the fourth element)
overallColor += (red + green + blue) / 3;
}
overallColor /= (len / 4);
QUnit.notEqual(overallColor, 255, 'Background Gradient drawn with CSS: ' + src);
} else {
QUnit.ok(true, 'No CSS Background Gradient support');
}
});
});
});
});