mozilla-central/browser/components/preferences/tests/browser_basic_rebuild_fonts_test.js (file symbol)

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Test Info: Warnings

add_task(async function () {
await openPreferencesViaOpenPreferencesAPI("general", { leaveOpen: true });
await gBrowser.contentWindow.gMainPane._selectDefaultLanguageGroupPromise;
await TestUtils.waitForCondition(
() => !gBrowser.contentWindow.Preferences.updateQueued
);
let doc = gBrowser.contentDocument;
let contentWindow = gBrowser.contentWindow;
var langGroup = Services.prefs.getComplexValue(
"font.language.group",
Ci.nsIPrefLocalizedString
).data;
is(
contentWindow.Preferences.get("font.language.group").value,
langGroup,
"Language group should be set correctly."
);
let defaultFontType = Services.prefs.getCharPref("font.default." + langGroup);
let fontFamilyPref = "font.name." + defaultFontType + "." + langGroup;
let fontFamily = Services.prefs.getCharPref(fontFamilyPref);
let fontFamilyField = doc.getElementById("defaultFont");
is(fontFamilyField.value, fontFamily, "Font family should be set correctly.");
function dispatchMenuItemCommand(menuItem) {
const cmdEvent = doc.createEvent("xulcommandevent");
cmdEvent.initCommandEvent(
"command",
true,
true,
contentWindow,
0,
false,
false,
false,
false,
0,
null,
0
);
menuItem.dispatchEvent(cmdEvent);
}
/**
* Return a promise that resolves when the fontFamilyPref changes.
*
* Font prefs are the only ones whose form controls set "delayprefsave",
* which delays the pref change when a user specifies a new value
* for the pref. Thus, in order to confirm that the pref gets changed
* when the test selects a new value in a font field, we need to await
* the change. Awaiting this function does so for fontFamilyPref.
*/
function fontFamilyPrefChanged() {
return new Promise(resolve => {
const observer = {
observe(aSubject, aTopic, aData) {
// Check for an exact match to avoid the ambiguity of nsIPrefBranch's
// prefix-matching algorithm for notifying pref observers.
if (aData == fontFamilyPref) {
Services.prefs.removeObserver(fontFamilyPref, observer);
resolve();
}
},
};
Services.prefs.addObserver(fontFamilyPref, observer);
});
}
const menuItems = fontFamilyField.querySelectorAll("menuitem");
Assert.greater(menuItems.length, 1, "There are multiple font menuitems.");
ok(menuItems[0].selected, "The first (default) font menuitem is selected.");
dispatchMenuItemCommand(menuItems[1]);
ok(menuItems[1].selected, "The second font menuitem is selected.");
await fontFamilyPrefChanged();
fontFamily = Services.prefs.getCharPref(fontFamilyPref);
is(fontFamilyField.value, fontFamily, "The font family has been updated.");
dispatchMenuItemCommand(menuItems[0]);
ok(
menuItems[0].selected,
"The first (default) font menuitem is selected again."
);
await fontFamilyPrefChanged();
fontFamily = Services.prefs.getCharPref(fontFamilyPref);
is(fontFamilyField.value, fontFamily, "The font family has been updated.");
let defaultFontSize = Services.prefs.getIntPref(
"font.size.variable." + langGroup
);
let fontSizeField = doc.getElementById("defaultFontSize");
is(
fontSizeField.value,
"" + defaultFontSize,
"Font size should be set correctly."
);
let promiseSubDialogLoaded = promiseLoadSubDialog(
"chrome://browser/content/preferences/dialogs/fonts.xhtml"
);
doc.getElementById("advancedFonts").click();
let win = await promiseSubDialogLoaded;
doc = win.document;
// Simulate a dumb font backend.
win.FontBuilder._enumerator = {
_list: ["MockedFont1", "MockedFont2", "MockedFont3"],
_defaultFont: null,
EnumerateFontsAsync() {
return Promise.resolve(this._list);
},
EnumerateAllFontsAsync() {
return Promise.resolve(this._list);
},
getDefaultFont() {
return this._defaultFont;
},
getStandardFamilyName(name) {
return name;
},
};
win.FontBuilder._allFonts = null;
win.FontBuilder._langGroupSupported = false;
let langGroupElement = win.Preferences.get("font.language.group");
let selectLangsField = doc.getElementById("selectLangs");
let serifField = doc.getElementById("serif");
let armenian = "x-armn";
let western = "x-western";
// Await rebuilding of the font lists, which happens asynchronously in
// gFontsDialog._selectLanguageGroup. Testing code needs to call this
// function and await its resolution after changing langGroupElement's value
// (or doing anything else that triggers a call to _selectLanguageGroup).
function fontListsRebuilt() {
return win.gFontsDialog._selectLanguageGroupPromise;
}
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(serifField.value, "", "Font family should not be set.");
let armenianSerifElement = win.Preferences.get("font.name.serif.x-armn");
langGroupElement.value = western;
await fontListsRebuilt();
selectLangsField.value = western;
// Simulate a font backend supporting language-specific enumeration.
// NB: FontBuilder has cached the return value from EnumerateAllFonts(),
// so _allFonts will always have 3 elements regardless of subsequent
// _list changes.
win.FontBuilder._enumerator._list = ["MockedFont2"];
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(
serifField.value,
"",
"Font family should still be empty for indicating using 'default' font."
);
langGroupElement.value = western;
await fontListsRebuilt();
selectLangsField.value = western;
// Simulate a system that has no fonts for the specified language.
win.FontBuilder._enumerator._list = [];
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(serifField.value, "", "Font family should not be set.");
// Setting default font to "MockedFont3". Then, when serifField.value is
// empty, it should indicate using "MockedFont3" but it shouldn't be saved
// to "MockedFont3" in the pref. It should be resolved at runtime.
win.FontBuilder._enumerator._list = [
"MockedFont1",
"MockedFont2",
"MockedFont3",
];
win.FontBuilder._enumerator._defaultFont = "MockedFont3";
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(
serifField.value,
"",
"Font family should be empty even if there is a default font."
);
armenianSerifElement.value = "MockedFont2";
serifField.value = "MockedFont2";
is(
serifField.value,
"MockedFont2",
'Font family should be "MockedFont2" for now.'
);
langGroupElement.value = western;
await fontListsRebuilt();
selectLangsField.value = western;
is(serifField.value, "", "Font family of other language should not be set.");
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(
serifField.value,
"MockedFont2",
"Font family should not be changed even after switching the language."
);
// If MochedFont2 is removed from the system, the value should be treated
// as empty (i.e., 'default' font) after rebuilding the font list.
win.FontBuilder._enumerator._list = ["MockedFont1", "MockedFont3"];
win.FontBuilder._enumerator._allFonts = ["MockedFont1", "MockedFont3"];
serifField.removeAllItems(); // This will cause rebuilding the font list from available fonts.
langGroupElement.value = armenian;
await fontListsRebuilt();
selectLangsField.value = armenian;
is(
serifField.value,
"",
"Font family should become empty due to the font uninstalled."
);
gBrowser.removeCurrentTab();
});