LibJS: Move tests to /Tests/LibJS

This commit is contained in:
Jelle Raaijmakers
2026-01-22 11:58:59 +01:00
committed by Tim Flynn
parent c059c6a2f5
commit e3faa9b5ad
Notes: github-actions[bot] 2026-02-06 11:17:48 +00:00
1067 changed files with 7 additions and 8 deletions

View File

@@ -0,0 +1,53 @@
test("length", () => {
expect(Array.prototype[Symbol.iterator]).toHaveLength(0);
});
test("@@toStringTag", () => {
expect([].values()[Symbol.toStringTag]).toBe("Array Iterator");
expect([].values().toString()).toBe("[object Array Iterator]");
});
test("same function as Array.prototype.values", () => {
expect(Array.prototype[Symbol.iterator]).toBe(Array.prototype.values);
});
test("basic functionality", () => {
const a = [1, 2, 3];
const it = a[Symbol.iterator]();
expect(it.next()).toEqual({ value: 1, done: false });
expect(it.next()).toEqual({ value: 2, done: false });
expect(it.next()).toEqual({ value: 3, done: false });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
});
test("works when applied to non-object", () => {
[true, false, 9, 2n, Symbol()].forEach(primitive => {
const it = [][Symbol.iterator].call(primitive);
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
});
});
test("item added to array before exhaustion is accessible", () => {
const a = [1, 2];
const it = a[Symbol.iterator]();
expect(it.next()).toEqual({ value: 1, done: false });
expect(it.next()).toEqual({ value: 2, done: false });
a.push(3);
expect(it.next()).toEqual({ value: 3, done: false });
expect(it.next()).toEqual({ value: undefined, done: true });
expect(it.next()).toEqual({ value: undefined, done: true });
});
test("item added to array after exhaustion is inaccessible", () => {
const a = [1, 2];
const it = a[Symbol.iterator]();
expect(it.next()).toEqual({ value: 1, done: false });
expect(it.next()).toEqual({ value: 2, done: false });
expect(it.next()).toEqual({ value: undefined, done: true });
a.push(3);
expect(it.next()).toEqual({ value: undefined, done: true });
});