function _valToString(val)
{
if (val === undefined || val === null)
return '[' + typeof(val) + ']';
return val.toString() + '[' + typeof(val) + ']';
}
var _hex2dec_table = {
0:0, 1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8, 9:9,
a:10, b:11, c:12, d:13, e:14, f:15,
A:10, B:11, C:12, D:13, E:14, F:15
};
function _hex2dec(hex)
{
return _hex2dec_table[hex.charAt(0)]*16 + _hex2dec_table[hex.charAt(1)];
}
var _failed = false;
var _asserted = false;
function _warn(text)
{
document.getElementById('d').appendChild(document.createElement('li')).appendChild(document.createTextNode(text));
}
function _fail(text)
{
_warn(text);
_failed = true;
}
function _assert(cond, text)
{
_asserted = true;
if (! cond)
_fail('Failed assertion: ' + text);
}
function _assertSame(a, b, text_a, text_b)
{
_asserted = true;
if (a !== b)
_fail('Failed assertion ' + text_a + ' === ' + text_b +
' (got ' + _valToString(a) + ', expected ' + _valToString(b) + ')');
}
function _assertDifferent(a, b, text_a, text_b)
{
_asserted = true;
if (a === b)
_fail('Failed assertion ' + text_a + ' !== ' + text_b +
' (got ' + _valToString(a) + ', expected not ' + _valToString(b) + ')');
}
function _assertEqual(a, b, text_a, text_b)
{
_asserted = true;
if (a != b)
_fail('Failed assertion ' + text_a + ' == ' + text_b +
' (got ' + _valToString(a) + ', expected ' + _valToString(b) + ')');
}
function _assertMatch(a, b, text_a, text_b)
{
_asserted = true;
if (! a.match(b))
_fail('Failed assertion ' + text_a + ' matches ' + text_b +
' (got ' + _valToString(a) + ')');
}
var _manual_check = false;
function _requireManualCheck()
{
_manual_check = true;
}
function _crash()
{
_fail('Aborted due to predicted crash');
}
var _getImageDataCalibrated = false;
var _getImageDataIsPremul, _getImageDataIsBGRA;
function _getPixel(canvas, x,y)
{
var ctx = canvas.getContext('2d');
if (ctx && typeof(ctx.getImageData) != 'undefined')
{
try {
var imgdata = ctx.getImageData(x, y, 1, 1);
} catch (e) {
// probably a security exception caused by having drawn
// data: URLs onto the canvas
imgdata = null;
}
if (imgdata)
{
// Work around getImageData bugs, since we want the other tests to
// carry on working as well as possible
if (! _getImageDataCalibrated)
{
var c2 = document.createElement('canvas');
c2.width = c2.height = 1;
var ctx2 = c2.getContext('2d');
ctx2.fillStyle = 'rgba(0, 255, 255, 0.5)';
ctx2.fillRect(0, 0, 1, 1);
var data2 = ctx2.getImageData(0, 0, 1, 1).data;
// Firefox returns premultiplied alpha
if (data2[1] > 100 && data2[1] < 150)
_getImageDataIsPremul = true;
else
_getImageDataIsPremul = false;
// Opera Mini 4 Beta returns BGRA instead of RGBA
if (data2[0] > 250 && data2[2] < 5)
_getImageDataIsBGRA = true;
else
_getImageDataIsBGRA = false;
_getImageDataCalibrated = true;
}
// Undo the BGRA flipping
var rgba = (_getImageDataIsBGRA
? [ imgdata.data[2], imgdata.data[1], imgdata.data[0], imgdata.data[3] ]
: [ imgdata.data[0], imgdata.data[1], imgdata.data[2], imgdata.data[3] ]);
if (! _getImageDataIsPremul)
return rgba;
// Undo the premultiplying
if (rgba[3] == 0)
return [ 0, 0, 0, 0 ];
else
{
var a = rgba[3] / 255;
return [
Math.round(rgba[0]/a),
Math.round(rgba[1]/a),
Math.round(rgba[2]/a),
rgba[3]
];
}
}
}
try { ctx = canvas.getContext('opera-2dgame'); } catch (e) { /* Firefox throws */ }
if (ctx && typeof(ctx.getPixel) != 'undefined')
{
try {
var c = ctx.getPixel(x, y);
} catch (e) {
// probably a security exception caused by having drawn
// data: URLs onto the canvas
c = null;
}
if (c)
{
var matches = /^rgba\((\d+), (\d+), (\d+), ([\d\.]+)\)$/.exec(c);
if (matches)
return [ matches[1], matches[2], matches[3], Math.round(matches[4]*255) ];
matches = /^#(..)(..)(..)$/.exec(c);
if (matches)
return [ _hex2dec(matches[1]), _hex2dec(matches[2]), _hex2dec(matches[3]), 255 ];
}
}
//_warn("(Can't test pixel value)");
_manual_check = true;
return undefined;
}
function _assertPixel(canvas, x,y, r,g,b,a)
{
_asserted = true;
var c = _getPixel(canvas, x,y);
if (c && ! (c[0] == r && c[1] == g && c[2] == b && c[3] == a))
_fail('Failed assertion: got pixel [' + c + '] at ('+x+','+y+'), expected ['+r+','+g+','+b+','+a+']');
}
function _assertPixelApprox(canvas, x,y, r,g,b,a, tolerance)
{
_asserted = true;
var c = _getPixel(canvas, x,y);
if (c)
{
var diff = Math.max(Math.abs(c[0]-r), Math.abs(c[1]-g), Math.abs(c[2]-b), Math.abs(c[3]-a));
if (diff > tolerance)
_fail('Failed assertion: got pixel [' + c + '] at ('+x+','+y+'), expected ['+r+','+g+','+b+','+a+'] +/- '+tolerance);
}
}
function _addTest(test)
{
var deferred = false;
window.deferTest = function () { deferred = true; };
function endTest()
{
if (_failed) // test failed
{
document.documentElement.className += ' fail';
window._testStatus = ['fail', document.getElementById('d').innerHTML];
}
else if (_manual_check || !_asserted)
{ // test case explicitly asked for a manual check, or no automatic assertions were performed
document.getElementById('d').innerHTML += '<li>Cannot automatically verify result';
document.documentElement.className += ' needs_check';
window._testStatus = ['check', document.getElementById('d').innerHTML];
}
else // test succeeded
{
document.getElementById('d').innerHTML += '<li>Passed';
document.documentElement.className += ' pass';
window._testStatus = ['pass', document.getElementById('d').innerHTML];
}
if (window.testRunner)
testRunner.notifyDone();
}
window.endTest = endTest;
window.wrapFunction = function (f)
{
return function()
{
try
{
f.apply(null, arguments);
}
catch (e)
{
_fail('Aborted with exception: ' + e.message);
}
endTest();
}
}
window.onload = function ()
{
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
try
{
var canvas = document.getElementById('c');
var ctx = canvas.getContext('2d');
test(canvas, ctx);
}
catch (e)
{
_fail('Aborted with exception: ' + e.message);
deferred = false; // cancel any deference
}
if (! deferred)
endTest();
};
}
Codebase Browser
chromium