<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>Scrolling tests</title>
<link rel="stylesheet" href="lib/mocha.css" />
<script src="../../node_modules/bluebird/js/browser/bluebird.js"></script>
<script src="../../dist/html2canvas.js"></script>
<script src="../assets/jquery-1.6.2.js"></script>
<script src="lib/expect.js"></script>
<script src="lib/mocha.js"></script>
</head>
<body>
<div id="mocha"></div>
<script>mocha.setup('bdd')</script>
<div id="scroll-render" style="height: 200px; width: 200px;">
<div style="height: 500px; width: 400px;overflow: scroll;" id="scrollable">
<div style="height: 500px;background: red;"></div>
<div style="height: 650px; background: green"></div>
</div>
</div>
<div style="height: 2200px"></div>
<div style="height: 500px;background: green;" id="bottom-content"><a name="content"> </a></div>
<script>
describe("Scrolling", function() {
it("with random scroll", function (done) {
$(window).scrollTop(123);
setTimeout(function() {
html2canvas(document.body, {type: 'view'}).then(function () {
expect($(window).scrollTop()).to.equal(123);
done();
}).catch(function (error) {
done(error);
});
}, 0);
});
it("with url anchor", function (done) {
window.location.hash = "#content";
setTimeout(function() {
var top = $(window).scrollTop();
html2canvas(document.body, {type: 'view'}).then(function () {
var currentTop = $(window).scrollTop();
window.location.hash = "";
expect(currentTop).to.be.greaterThan(1500);
if ((currentTop - top) !== 200) { // phantomjs issue
expect(currentTop).to.equal(top);
}
done();
}).catch(function (error) {
done(error);
});
}, 0);
});
it("with content scroll", function (done) {
$("#scrollable").scrollTop(500);
setTimeout(function() {
html2canvas(document.querySelector("#scroll-render")).then(function (canvas) {
expect($("#scrollable").scrollTop()).to.equal(500);
expect(canvas.width).to.equal(200);
expect(canvas.height).to.equal(200);
validCanvasPixels(canvas);
done();
}).catch(function (error) {
done(error);
});
}, 0);
});
it("with window scroll", function (done) {
$(window).scrollTop(500);
setTimeout(function() {
console.log(document.querySelector("#bottom-content").getBoundingClientRect().top);
html2canvas(document.querySelector("#bottom-content")).then(function (canvas) {
expect($(window).scrollTop()).to.equal(500);
validCanvasPixels(canvas);
done();
}).catch(function (error) {
done(error);
});
}, 0);
});
});
function validCanvasPixels(canvas) {
var ctx = canvas.getContext("2d");
var data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;
for (var i = 0, len = 200*199*4; i < len; i+=4) {
if (data[i] !== 0 || data[i+1] !== 128 || data[i+2] !== 0 || data[i+3] !== 255) {
console.log(i, data[i], data[i+1], data[i+2], data[i+3]);
expect().fail("Invalid canvas data");
}
}
}
after(function() {
if (history) {
history.pushState("", document.title, window.location.pathname + window.location.search);
}
});
mocha.checkLeaks();
mocha.globals(['jQuery']);
if (window.mochaPhantomJS) {
mochaPhantomJS.run();
}
else {
mocha.run();
}
mocha.suite.afterAll(function() {
document.body.setAttribute('data-complete', 'true');
});
</script>
</body>
</html>