forked from mirrors/gecko-dev
72 lines
2.2 KiB
JavaScript
72 lines
2.2 KiB
JavaScript
"use strict";
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const ZOOM_CHANGE_TOPIC = "browser-fullZoom:location-change";
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/**
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* Helper to check the zoom level of the preloaded browser
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*/
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async function checkPreloadedZoom(level, message) {
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// Clear up any previous preloaded to test a fresh version
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gBrowser.removePreloadedBrowser();
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gBrowser._createPreloadBrowser();
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// Wait for zoom handling of preloaded
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const browser = gBrowser._preloadedBrowser;
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await new Promise(resolve => Services.obs.addObserver(function obs(subject) {
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if (subject === browser) {
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Services.obs.removeObserver(obs, ZOOM_CHANGE_TOPIC);
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resolve();
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}
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}, ZOOM_CHANGE_TOPIC));
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is(browser.fullZoom, level, message);
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// Clean up for other tests
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gBrowser.removePreloadedBrowser();
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}
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add_task(async function test_default_zoom() {
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await checkPreloadedZoom(1, "default preloaded zoom is 1");
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});
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/**
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* Helper to open about:newtab and zoom then check matching preloaded zoom
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*/
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async function zoomNewTab(changeZoom, message) {
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const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, "about:newtab");
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changeZoom();
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const level = tab.linkedBrowser.fullZoom;
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BrowserTestUtils.removeTab(tab);
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// Wait for the the update of the full-zoom content pref value, that happens
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// asynchronously after changing the zoom level.
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let cps2 = Cc["@mozilla.org/content-pref/service;1"].
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getService(Ci.nsIContentPrefService2);
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await BrowserTestUtils.waitForCondition(() => {
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return new Promise(resolve => {
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cps2.getByDomainAndName("about:newtab", "browser.content.full-zoom", null, {
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handleResult(pref) {
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resolve(level == pref.value);
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},
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handleCompletion() {},
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});
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});
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});
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await checkPreloadedZoom(level, `${message}: ${level}`);
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}
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add_task(async function test_preloaded_zoom_out() {
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await zoomNewTab(() => FullZoom.reduce(), "zoomed out applied to preloaded");
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});
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add_task(async function test_preloaded_zoom_in() {
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await zoomNewTab(() => {
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FullZoom.enlarge();
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FullZoom.enlarge();
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}, "zoomed in applied to preloaded");
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});
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add_task(async function test_preloaded_zoom_default() {
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await zoomNewTab(() => FullZoom.reduce(), "zoomed back to default applied to preloaded");
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});
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