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var gTestRoot = getRootDirectory(gTestPath).replace(
"chrome://mochitests/content/",
"http://127.0.0.1:8888/"
);
// simple tab load helper, pilfered from browser plugin tests
function promiseTabLoad(tab, url, eventType = "load") {
return new Promise(resolve => {
function handle(event) {
if (
event.originalTarget != tab.linkedBrowser.contentDocument ||
event.target.location.href == "about:blank" ||
(url && event.target.location.href != url)
) {
return;
}
tab.linkedBrowser.removeEventListener(eventType, handle, true);
resolve(event);
}
tab.linkedBrowser.addEventListener(eventType, handle, true, true);
if (url) {
tab.linkedBrowser.loadURI(url);
}
});
}
// dom event listener helper
function promiseWaitForEvent(
object,
eventName,
capturing = false,
chrome = false
) {
return new Promise(resolve => {
function listener(event) {
object.removeEventListener(eventName, listener, capturing, chrome);
resolve(event);
}
object.addEventListener(eventName, listener, capturing, chrome);
});
}
add_task(async function() {
registerCleanupFunction(function() {
window.focus();
});
});
add_task(async function() {
setTestPluginEnabledState(Ci.nsIPluginTag.STATE_ENABLED, "Test Plug-in");
let pluginTab = (gBrowser.selectedTab = BrowserTestUtils.addTab(gBrowser));
let prefTab = BrowserTestUtils.addTab(gBrowser);
await promiseTabLoad(pluginTab, gTestRoot + "plugin_test.html");
await promiseTabLoad(prefTab, "about:preferences");
await SpecialPowers.spawn(gBrowser.selectedBrowser, [], async function() {
let doc = content.document;
let plugin = doc.getElementById("testplugin");
Assert.ok(!!plugin, "plugin is loaded");
});
let ppromise = promiseWaitForEvent(window, "MozAfterPaint");
gBrowser.selectedTab = prefTab;
await ppromise;
// We're going to switch tabs using actual mouse clicks, which helps
// reproduce this bug.
let tabStripContainer = document.getElementById("tabbrowser-tabs");
// diagnosis if front end layout changes
info("-> " + tabStripContainer.tagName); // tabs
info("-> " + tabStripContainer.firstChild.tagName); // tab
info("-> " + tabStripContainer.childNodes[0].label); // test harness tab
info("-> " + tabStripContainer.childNodes[1].label); // plugin tab
info("-> " + tabStripContainer.childNodes[2].label); // preferences tab
for (let iteration = 0; iteration < 5; iteration++) {
ppromise = promiseWaitForEvent(window, "MozAfterPaint");
EventUtils.synthesizeMouseAtCenter(
tabStripContainer.childNodes[1],
{},
window
);
await ppromise;
await SpecialPowers.spawn(pluginTab.linkedBrowser, [], async function() {
let doc = content.document;
let plugin = doc.getElementById("testplugin");
Assert.ok(
XPCNativeWrapper.unwrap(plugin).nativeWidgetIsVisible(),
"plugin is visible"
);
});
ppromise = promiseWaitForEvent(window, "MozAfterPaint");
EventUtils.synthesizeMouseAtCenter(
tabStripContainer.childNodes[2],
{},
window
);
await ppromise;
await SpecialPowers.spawn(pluginTab.linkedBrowser, [], async function() {
let doc = content.document;
let plugin = doc.getElementById("testplugin");
Assert.ok(
!XPCNativeWrapper.unwrap(plugin).nativeWidgetIsVisible(),
"plugin is hidden"
);
});
}
gBrowser.removeTab(prefTab);
gBrowser.removeTab(pluginTab);
});
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