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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
Notes: sideshowbarker 2024-07-18 23:53:55 +09:00
1857 changed files with 266 additions and 274 deletions
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61
Libraries/LibJS/Tests/operators/delete-basic.js
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@ -1,61 +0,0 @@
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();
});