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LibJS: Add %TypedArray%.prototype.keys
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3 changed files with 58 additions and 0 deletions
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const TYPED_ARRAYS = [
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Uint8Array,
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Uint16Array,
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Uint32Array,
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Int8Array,
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Int16Array,
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Int32Array,
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Float32Array,
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Float64Array,
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];
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const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
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test("length is 0", () => {
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TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.keys).toHaveLength(0);
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});
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BIGINT_TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.keys).toHaveLength(0);
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});
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});
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test("basic functionality", () => {
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TYPED_ARRAYS.forEach(T => {
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const a = new T([30, 40, 50]);
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const it = a.keys();
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expect(it.next()).toEqual({ value: 0, done: false });
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expect(it.next()).toEqual({ value: 1, done: false });
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expect(it.next()).toEqual({ value: 2, done: false });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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});
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BIGINT_TYPED_ARRAYS.forEach(T => {
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const a = new T([30n, 40n, 50n]);
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const it = a.keys();
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expect(it.next()).toEqual({ value: 0, done: false });
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expect(it.next()).toEqual({ value: 1, done: false });
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expect(it.next()).toEqual({ value: 2, done: false });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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expect(it.next()).toEqual({ value: undefined, done: true });
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});
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});
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