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68 lines
2.5 KiB
JavaScript
68 lines
2.5 KiB
JavaScript
"use strict";
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const PAGE = "http://example.com/browser/browser/base/content/test/general/page_style_sample.html";
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/**
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* Stylesheets are updated for a browser after the pageshow event.
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* This helper function returns a Promise that waits for that pageshow
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* event, and then resolves on the next tick to ensure that gPageStyleMenu
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* has had a chance to update the stylesheets.
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*
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* @param browser
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* The <xul:browser> to wait for.
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* @return Promise
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*/
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function promiseStylesheetsUpdated(browser) {
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return ContentTask.spawn(browser, { PAGE }, function*(args) {
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return new Promise((resolve) => {
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addEventListener("pageshow", function onPageShow(e) {
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if (e.target.location == args.PAGE) {
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removeEventListener("pageshow", onPageShow);
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content.setTimeout(resolve, 0);
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}
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});
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})
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});
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}
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/**
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* Tests that the Page Style menu shows the currently
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* selected Page Style after a new one has been selected.
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*/
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add_task(function*() {
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let tab = yield BrowserTestUtils.openNewForegroundTab(gBrowser, "about:blank", false);
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let browser = tab.linkedBrowser;
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yield BrowserTestUtils.loadURI(browser, PAGE);
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yield promiseStylesheetsUpdated(browser);
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let menupopup = document.getElementById("pageStyleMenu").menupopup;
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gPageStyleMenu.fillPopup(menupopup);
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// page_style_sample.html should default us to selecting the stylesheet
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// with the title "6" first.
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let selected = menupopup.querySelector("menuitem[checked='true']");
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is(selected.getAttribute("label"), "6", "Should have '6' stylesheet selected by default");
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// Now select stylesheet "1"
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let targets = menupopup.querySelectorAll("menuitem");
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let target = menupopup.querySelector("menuitem[label='1']");
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target.click();
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// Now we need to wait for the content process to send its stylesheet
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// update for the selected tab to the parent. Because messages are
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// guaranteed to be sent in order, we'll make sure we do the check
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// after the parent has been updated by yielding until the child
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// has finished running a ContentTask for us.
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yield ContentTask.spawn(browser, {}, function*() {
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dump('\nJust wasting some time.\n');
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});
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gPageStyleMenu.fillPopup(menupopup);
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// gPageStyleMenu empties out the menu between opens, so we need
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// to get a new reference to the selected menuitem
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selected = menupopup.querySelector("menuitem[checked='true']");
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is(selected.getAttribute("label"), "1", "Should now have stylesheet 1 selected");
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yield BrowserTestUtils.removeTab(tab);
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}); |