0bb66890c8
- We have to check if the property name is a string before calling as_string() on it - We can't as_number() the same property name but have to use the parsed index number Fixes #3950.
61 lines
2 KiB
JavaScript
61 lines
2 KiB
JavaScript
test("deleting object properties", () => {
|
|
const o = {};
|
|
o.x = 1;
|
|
o.y = 2;
|
|
o.z = 3;
|
|
expect(Object.getOwnPropertyNames(o)).toHaveLength(3);
|
|
|
|
expect(delete o.x).toBeTrue();
|
|
expect(o.hasOwnProperty("x")).toBeFalse();
|
|
expect(o.hasOwnProperty("y")).toBeTrue();
|
|
expect(o.hasOwnProperty("z")).toBeTrue();
|
|
expect(Object.getOwnPropertyNames(o)).toHaveLength(2);
|
|
|
|
expect(delete o.y).toBeTrue();
|
|
expect(o.hasOwnProperty("x")).toBeFalse();
|
|
expect(o.hasOwnProperty("y")).toBeFalse();
|
|
expect(o.hasOwnProperty("z")).toBeTrue();
|
|
expect(Object.getOwnPropertyNames(o)).toHaveLength(1);
|
|
|
|
expect(delete o.z).toBeTrue();
|
|
expect(o.hasOwnProperty("x")).toBeFalse();
|
|
expect(o.hasOwnProperty("y")).toBeFalse();
|
|
expect(o.hasOwnProperty("z")).toBeFalse();
|
|
expect(Object.getOwnPropertyNames(o)).toHaveLength(0);
|
|
});
|
|
|
|
test("deleting array indices", () => {
|
|
const a = [3, 5, 7];
|
|
|
|
expect(Object.getOwnPropertyNames(a)).toHaveLength(4);
|
|
|
|
expect(delete a[0]).toBeTrue();
|
|
expect(a.hasOwnProperty(0)).toBeFalse();
|
|
expect(a.hasOwnProperty(1)).toBeTrue();
|
|
expect(a.hasOwnProperty(2)).toBeTrue();
|
|
expect(Object.getOwnPropertyNames(a)).toHaveLength(3);
|
|
|
|
expect(delete a[1]).toBeTrue();
|
|
expect(a.hasOwnProperty(0)).toBeFalse();
|
|
expect(a.hasOwnProperty(1)).toBeFalse();
|
|
expect(a.hasOwnProperty(2)).toBeTrue();
|
|
expect(Object.getOwnPropertyNames(a)).toHaveLength(2);
|
|
|
|
expect(delete a[2]).toBeTrue();
|
|
expect(a.hasOwnProperty(0)).toBeFalse();
|
|
expect(a.hasOwnProperty(1)).toBeFalse();
|
|
expect(a.hasOwnProperty(2)).toBeFalse();
|
|
expect(Object.getOwnPropertyNames(a)).toHaveLength(1);
|
|
|
|
expect(delete a["42"]).toBeTrue();
|
|
expect(Object.getOwnPropertyNames(a)).toHaveLength(1);
|
|
});
|
|
|
|
test("deleting non-configurable property", () => {
|
|
const q = {};
|
|
Object.defineProperty(q, "foo", { value: 1, writable: false, enumerable: false });
|
|
expect(q.foo).toBe(1);
|
|
|
|
expect(delete q.foo).toBeFalse();
|
|
expect(q.hasOwnProperty("foo")).toBeTrue();
|
|
});
|