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// include resources/js-test.js before this file.
function doLeakTest(src, tolerance) {
function getCounterValues() {
testRunner.resetTestHelperControllers();
gc();
var ret = {'numberOfLiveDocuments': window.internals.numberOfLiveDocuments()};
var refCountedInstances = JSON.parse(window.internals.dumpRefCountedInstanceCounts());
for (typename in refCountedInstances)
ret['numberOfInstances-'+typename] = refCountedInstances[typename];
return ret;
}
var frame = document.createElement('iframe');
document.body.appendChild(frame);
function loadSourceIntoIframe(src, callback) {
var originalSrc = frame.src;
frame.onload = function() {
if (frame.src === originalSrc)
return true;
callback();
return true;
};
frame.src = src;
}
function compareValues(countersBefore, countersAfter, tolerance) {
for (type in tolerance) {
var before = countersBefore[type];
var after = countersAfter[type];
if (after - before <= tolerance[type])
testPassed('The difference of counter "'+type+'" before and after the cycle is under the threshold of '+tolerance[type]+'.');
else
testFailed('counter "'+type+'" was '+before+' before and now '+after+' after the cycle. This exceeds the threshold of '+tolerance[type]+'.');
}
}
jsTestIsAsync = true;
if (!window.internals) {
debug("This test only runs on DumpRenderTree, as it requires existence of window.internals and cross-domain resource access check disabled.");
finishJSTest();
}
loadSourceIntoIframe('about:blank', function() {
// blank document loaded...
var countersBefore = getCounterValues();
loadSourceIntoIframe(src, function() {
// target document loaded...
loadSourceIntoIframe('about:blank', function() {
// target document unloaded...
// Measure counter values on next timer event. This is needed
// to correctly handle deref cycles for some ActiveDOMObjects
// such as XMLHttpRequest.
setTimeout(function() {
var countersAfter = getCounterValues();
compareValues(countersBefore, countersAfter, tolerance);
finishJSTest();
}, 0);
});
});
});
}
function htmlToUrl(html) {
return 'data:text/html;charset=utf-8,' + html;
}
function grabScriptText(id) {
return document.getElementById(id).innerText;
}
// include fast/js/resources/js-test-post.js after this file.
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