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Libraries: Move to Userland/Libraries/

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This commit is contained in:
Andreas Kling 2021-01-12 12:17:30 +01:00
parent dc28c07fa5
commit 13d7c09125
1857 changed files with 266 additions and 274 deletions
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59
Libraries/LibJS/Tests/builtins/Proxy/Proxy.handler-preventExtensions.js
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@ -1,59 +0,0 @@
describe("[[PreventExtension]] trap normal behavior", () => {
test("forwarding when not defined in handler", () => {
let p = new Proxy({}, { preventExtensions: null });
expect(Object.preventExtensions(p)).toBe(p);
p = new Proxy({}, { preventExtensions: undefined });
expect(Object.preventExtensions(p)).toBe(p);
p = new Proxy({}, {});
expect(Object.preventExtensions(p)).toBe(p);
});
test("correct arguments supplied to trap", () => {
let o = {};
p = new Proxy(o, {
preventExtensions(target) {
expect(target).toBe(o);
return true;
},
});
Object.preventExtensions(o);
Object.preventExtensions(p);
});
});
describe("[[PreventExtensions]] invariants", () => {
test("cannot return false", () => {
let p = new Proxy(
{},
{
preventExtensions() {
return false;
},
}
);
expect(() => {
Object.preventExtensions(p);
}).toThrowWithMessage(TypeError, "Object's [[PreventExtensions]] method returned false");
});
test("cannot return true if the target is extensible", () => {
let o = {};
let p = new Proxy(o, {
preventExtensions() {
return true;
},
});
expect(() => {
Object.preventExtensions(p);
}).toThrowWithMessage(
TypeError,
"Proxy handler's preventExtensions trap violates invariant: cannot return true if the target object is extensible"
);
Object.preventExtensions(o);
expect(Object.preventExtensions(p)).toBe(p);
});
});