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Test Info: Warnings
- This test gets skipped with pattern: os == 'linux' && bits == 64 OR os == 'mac' && fission
- Manifest: dom/base/test/browser.toml
const PRELOADED_STATE = "preloaded";
var ppmm = Services.ppmm;
add_task(async function () {
// We want to count processes in this test, so let's disable the pre-allocated process manager.
await SpecialPowers.pushPrefEnv({
set: [
["dom.ipc.processPrelaunch.enabled", false],
["dom.ipc.processCount", 10],
["dom.ipc.processCount.webIsolated", 10],
["dom.ipc.keepProcessesAlive.web", 10],
],
});
});
add_task(async function () {
// This test is only relevant in e10s.
if (!gMultiProcessBrowser) {
return;
}
ppmm.releaseCachedProcesses();
// Wait for the preloaded browser to load.
await BrowserTestUtils.maybeCreatePreloadedBrowser(gBrowser);
// Store the number of processes.
let expectedChildCount = ppmm.childCount;
// Open 3 tabs using the preloaded browser.
let tabs = [];
for (let i = 0; i < 3; i++) {
BrowserCommands.openTab();
tabs.unshift(gBrowser.selectedTab);
await BrowserTestUtils.maybeCreatePreloadedBrowser(gBrowser);
// Check that the process count did not change.
is(
ppmm.childCount,
expectedChildCount,
"Preloaded browser should not create a new content process."
);
}
// Navigate to a content page from the parent side.
//
// We should create a new content process.
expectedChildCount += 1;
BrowserTestUtils.startLoadingURIString(tabs[0].linkedBrowser, TEST_URL);
await BrowserTestUtils.browserLoaded(tabs[0].linkedBrowser, false, TEST_URL);
is(
ppmm.childCount,
expectedChildCount,
"Navigating away from the preloaded browser (parent side) should create a new content process."
);
// Navigate to the same content page from the child side.
//
// We should create a new content process.
expectedChildCount += 1;
await BrowserTestUtils.switchTab(gBrowser, tabs[1]);
await SpecialPowers.spawn(tabs[1].linkedBrowser, [TEST_URL], url => {
content.location.href = url;
});
await BrowserTestUtils.browserLoaded(tabs[1].linkedBrowser, false, TEST_URL);
is(
ppmm.childCount,
expectedChildCount,
"Navigating away from the preloaded browser (child side, same-origin) should create a new content process."
);
// Navigate to a new content page from the child side.
//
// We should create a new content process.
expectedChildCount += 1;
await BrowserTestUtils.switchTab(gBrowser, tabs[2]);
await ContentTask.spawn(tabs[2].linkedBrowser, TEST_URL_2, url => {
content.location.href = url;
});
await BrowserTestUtils.browserLoaded(
tabs[2].linkedBrowser,
false,
TEST_URL_2
);
is(
ppmm.childCount,
expectedChildCount,
"Navigating away from the preloaded browser (child side, cross-origin) should create a new content process."
);
for (let tab of tabs) {
BrowserTestUtils.removeTab(tab);
}
// Make sure the preload browser does not keep any of the new processes alive.
NewTabPagePreloading.removePreloadedBrowser(window);
// Since we kept alive all the processes, we can shut down the ones that do
// not host any tabs reliably.
ppmm.releaseCachedProcesses();
});
add_task(async function preloaded_state_attribute() {
// Wait for a preloaded browser to exist, use it, and then create another one
await BrowserTestUtils.maybeCreatePreloadedBrowser(gBrowser);
let preloadedTabState =
gBrowser.preloadedBrowser.getAttribute("preloadedState");
is(
preloadedTabState,
PRELOADED_STATE,
"Sanity check that the first preloaded browser has the correct attribute"
);
BrowserCommands.openTab();
await BrowserTestUtils.maybeCreatePreloadedBrowser(gBrowser);
// Now check that the tabs have the correct browser attributes set
is(
gBrowser.selectedBrowser.hasAttribute("preloadedState"),
false,
"The opened tab consumed the preloaded browser and removed the attribute"
);
preloadedTabState = gBrowser.preloadedBrowser.getAttribute("preloadedState");
is(
preloadedTabState,
PRELOADED_STATE,
"The preloaded browser has the correct attribute"
);
// Remove tabs and preloaded browsers
BrowserTestUtils.removeTab(gBrowser.selectedTab);
NewTabPagePreloading.removePreloadedBrowser(window);
});