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LibJS: Add %TypedArray%.prototype.keys

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Luke 2021-06-26 01:00:07 +01:00 • committed by Linus Groh
parent 293974c1cb
commit fb43b778ab
3 changed files with 58 additions and 0 deletions
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46
Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.keys.js Normal file
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const TYPED_ARRAYS = [
Uint8Array,
Uint16Array,
Uint32Array,
Int8Array,
Int16Array,
Int32Array,
Float32Array,
Float64Array,
];
const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
test("length is 0", () => {
TYPED_ARRAYS.forEach(T => {
expect(T.prototype.keys).toHaveLength(0);
});
BIGINT_TYPED_ARRAYS.forEach(T => {
expect(T.prototype.keys).toHaveLength(0);
});
});
test("basic functionality", () => {
TYPED_ARRAYS.forEach(T => {
const a = new T([30, 40, 50]);
const it = a.keys();
expect(it.next()).toEqual({ value: 0, done: false });
expect(it.next()).toEqual({ value: 1, done: false });
expect(it.next()).toEqual({ value: 2, 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 });
});
BIGINT_TYPED_ARRAYS.forEach(T => {
const a = new T([30n, 40n, 50n]);
const it = a.keys();
expect(it.next()).toEqual({ value: 0, done: false });
expect(it.next()).toEqual({ value: 1, done: false });
expect(it.next()).toEqual({ value: 2, 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 });
});
});