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Test Info:

const DG_BACKGROUND = "/desktop/gnome/background";
const DG_IMAGE_KEY = DG_BACKGROUND + "/picture_filename";
const DG_OPTION_KEY = DG_BACKGROUND + "/picture_options";
const DG_DRAW_BG_KEY = DG_BACKGROUND + "/draw_background";
const GS_BG_SCHEMA = "org.gnome.desktop.background";
const GS_IMAGE_KEY = "picture-uri";
const GS_OPTION_KEY = "picture-options";
const GS_DRAW_BG_KEY = "draw-background";
add_task(async function () {
await BrowserTestUtils.withNewTab(
{
gBrowser,
url: "about:logo",
},
() => {
var brandName = Services.strings
.createBundle("chrome://branding/locale/brand.properties")
.GetStringFromName("brandShortName");
var dirSvc = Cc["@mozilla.org/file/directory_service;1"].getService(
Ci.nsIDirectoryServiceProvider
);
var homeDir = dirSvc.getFile("Home", {});
var wpFile = homeDir.clone();
wpFile.append(brandName + "_wallpaper.png");
// Backup the existing wallpaper so that this test doesn't change the user's
// settings.
var wpFileBackup = homeDir.clone();
wpFileBackup.append(brandName + "_wallpaper.png.backup");
if (wpFileBackup.exists()) {
wpFileBackup.remove(false);
}
if (wpFile.exists()) {
wpFile.copyTo(null, wpFileBackup.leafName);
}
var shell = Cc["@mozilla.org/browser/shell-service;1"].getService(
Ci.nsIShellService
);
// For simplicity, we're going to reach in and access the image on the
// page directly, which means the page shouldn't be running in a remote
// browser. Thankfully, about:logo runs in the parent process for now.
Assert.ok(
!gBrowser.selectedBrowser.isRemoteBrowser,
"image can be accessed synchronously from the parent process"
);
var image = content.document.images[0];
let checkWallpaper, restoreSettings;
try {
// Try via GSettings first
const gsettings = Cc["@mozilla.org/gsettings-service;1"]
.getService(Ci.nsIGSettingsService)
.getCollectionForSchema(GS_BG_SCHEMA);
const prevImage = gsettings.getString(GS_IMAGE_KEY);
const prevOption = gsettings.getString(GS_OPTION_KEY);
const prevDrawBG = gsettings.getBoolean(GS_DRAW_BG_KEY);
checkWallpaper = function (position, expectedGSettingsPosition) {
shell.setDesktopBackground(image, position, "");
ok(wpFile.exists(), "Wallpaper was written to disk");
is(
gsettings.getString(GS_IMAGE_KEY),
encodeURI("file://" + wpFile.path),
"Wallpaper file GSettings key is correct"
);
is(
gsettings.getString(GS_OPTION_KEY),
expectedGSettingsPosition,
"Wallpaper position GSettings key is correct"
);
};
restoreSettings = function () {
gsettings.setString(GS_IMAGE_KEY, prevImage);
gsettings.setString(GS_OPTION_KEY, prevOption);
gsettings.setBoolean(GS_DRAW_BG_KEY, prevDrawBG);
};
} catch (e) {}
checkWallpaper(Ci.nsIShellService.BACKGROUND_TILE, "wallpaper");
checkWallpaper(Ci.nsIShellService.BACKGROUND_STRETCH, "stretched");
checkWallpaper(Ci.nsIShellService.BACKGROUND_CENTER, "centered");
checkWallpaper(Ci.nsIShellService.BACKGROUND_FILL, "zoom");
checkWallpaper(Ci.nsIShellService.BACKGROUND_FIT, "scaled");
checkWallpaper(Ci.nsIShellService.BACKGROUND_SPAN, "spanned");
restoreSettings();
// Restore files
if (wpFileBackup.exists()) {
wpFileBackup.moveTo(null, wpFile.leafName);
}
}
);
});