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LibJS: Implement Atomics.isLockFree

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Timothy Flynn 2021-07-12 10:35:14 -04:00 • committed by Linus Groh
parent d9c2447999
commit 1a3e1bff7b
4 changed files with 46 additions and 0 deletions
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25
Userland/Libraries/LibJS/Tests/builtins/Atomics/Atomics.isLockFree.js Normal file
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test("invariants", () => {
expect(Atomics.isLockFree).toHaveLength(1);
});
test("basic functionality", () => {
expect(Atomics.isLockFree(4)).toBeTrue();
// Can't assume the return value of sizes 1, 2, and 8, but they shouldn't change.
expect(Atomics.isLockFree(1)).toBe(Atomics.isLockFree(1));
expect(Atomics.isLockFree(2)).toBe(Atomics.isLockFree(2));
expect(Atomics.isLockFree(8)).toBe(Atomics.isLockFree(8));
expect(Atomics.isLockFree(0)).toBeFalse();
expect(Atomics.isLockFree(3)).toBeFalse();
expect(Atomics.isLockFree(5)).toBeFalse();
expect(Atomics.isLockFree(6)).toBeFalse();
expect(Atomics.isLockFree(7)).toBeFalse();
expect(Atomics.isLockFree(9)).toBeFalse();
expect(Atomics.isLockFree(10)).toBeFalse();
expect(Atomics.isLockFree(Infinity)).toBeFalse();
expect(Atomics.isLockFree("not a number")).toBeFalse();
expect(Atomics.isLockFree(new Float32Array(4))).toBeFalse();
expect(Atomics.isLockFree(String.prototype)).toBeFalse();
});