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LibJS: Implement Atomics.store
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4 changed files with 99 additions and 0 deletions
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test("invariants", () => {
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expect(Atomics.store).toHaveLength(3);
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});
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test("error cases", () => {
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expect(() => {
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Atomics.store("not an array", 0);
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}).toThrow(TypeError);
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expect(() => {
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const bad_array_type = new Float32Array(4);
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Atomics.store(bad_array_type, 0);
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}).toThrow(TypeError);
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expect(() => {
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const bad_array_type = new Uint8ClampedArray(4);
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Atomics.store(bad_array_type, 0);
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}).toThrow(TypeError);
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expect(() => {
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const array = new Int32Array(4);
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Atomics.store(array, 100);
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}).toThrow(RangeError);
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});
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test("basic functionality (non-BigInt)", () => {
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[Int8Array, Int16Array, Int32Array, Uint8Array, Uint16Array, Uint32Array].forEach(ArrayType => {
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const array = new ArrayType(4);
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expect(Atomics.store(array, 0, 1)).toBe(1);
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expect(array[0]).toBe(1);
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expect(Atomics.store(array, 1, 2)).toBe(2);
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expect(array[1]).toBe(2);
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expect(Atomics.store(array, 2, 3)).toBe(3);
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expect(array[2]).toBe(3);
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expect(Atomics.store(array, 3, 4)).toBe(4);
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expect(array[3]).toBe(4);
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});
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});
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test("basic functionality (BigInt)", () => {
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[BigInt64Array, BigUint64Array].forEach(ArrayType => {
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const array = new ArrayType(4);
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expect(Atomics.store(array, 0, 1n)).toBe(1n);
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expect(array[0]).toBe(1n);
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expect(Atomics.store(array, 1, 2n)).toBe(2n);
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expect(array[1]).toBe(2n);
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expect(Atomics.store(array, 2, 3n)).toBe(3n);
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expect(array[2]).toBe(3n);
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expect(Atomics.store(array, 3, 4n)).toBe(4n);
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expect(array[3]).toBe(4n);
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});
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});
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