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'use strict'
ChromeUtils.import('resource://gre/modules/Preferences.jsm');
const {Services} = ChromeUtils.import('resource://gre/modules/Services.jsm');
add_task(async function() {
let webnav = Services.appShell.createWindowlessBrowser(false);
let docShell = webnav.docShell;
docShell.createAboutBlankContentViewer(null, null);
let window = webnav.document.defaultView;
let unwrapped = Cu.waiveXrays(window);
class Base {
constructor(o) {
return o;
}
};
var A;
try {
A = eval(`
(function() {
class A extends Base {
#x = 12;
static gx(o) {
return o.#x;
}
static sx(o, v) {
o.#x = v;
}
};
return A})()`);
} catch (e) {
Assert.equal(e instanceof SyntaxError, true);
Assert.equal(
/private fields are not currently supported/.test(e.message), true);
// Early return if private fields aren't enabled.
return;
}
new A(window);
Assert.equal(A.gx(window), 12);
A.sx(window, 'wrapped');
// Shouldn't tunnel past xray.
Assert.throws(() => A.gx(unwrapped), TypeError);
Assert.throws(() => A.sx(unwrapped, 'unwrapped'), TypeError);
new A(unwrapped);
Assert.equal(A.gx(unwrapped), 12);
Assert.equal(A.gx(window), 'wrapped');
A.sx(window, 'modified');
Assert.equal(A.gx(unwrapped), 12);
A.sx(unwrapped, 16);
Assert.equal(A.gx(window), 'modified');
});
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