LibJS: Implement Atomics.or

Userland/Libraries/LibJS/Tests/builtins/Atomics/Atomics.or.js

@@ -0,0 +1,70 @@
+test("invariants", () => {
+    expect(Atomics.or).toHaveLength(3);
+});
+
+test("error cases", () => {
+    expect(() => {
+        Atomics.or("not an array", 0, 1);
+    }).toThrow(TypeError);
+
+    expect(() => {
+        const bad_array_type = new Float32Array(4);
+        Atomics.or(bad_array_type, 0, 1);
+    }).toThrow(TypeError);
+
+    expect(() => {
+        const bad_array_type = new Uint8ClampedArray(4);
+        Atomics.or(bad_array_type, 0, 1);
+    }).toThrow(TypeError);
+
+    expect(() => {
+        const array = new Int32Array(4);
+        Atomics.or(array, 100, 1);
+    }).toThrow(RangeError);
+});
+
+test("basic functionality (non-BigInt)", () => {
+    [Int8Array, Int16Array, Int32Array, Uint8Array, Uint16Array, Uint32Array].forEach(ArrayType => {
+        const array = new ArrayType(2);
+        array[0] = 0b0000;
+        array[1] = 0b0101;
+
+        expect(Atomics.or(array, 0, 0b0000)).toBe(0b0000);
+        expect(array).toEqual([0b0000, 0b0101]);
+
+        expect(Atomics.or(array, 0, 0b1111)).toBe(0b0000);
+        expect(array).toEqual([0b1111, 0b0101]);
+
+        expect(Atomics.or(array, 1, 0b0101)).toBe(0b0101);
+        expect(array).toEqual([0b1111, 0b0101]);
+
+        expect(Atomics.or(array, 1, 0b1000)).toBe(0b0101);
+        expect(array).toEqual([0b1111, 0b1101]);
+
+        expect(Atomics.or(array, 1, 0b0010)).toBe(0b1101);
+        expect(array).toEqual([0b1111, 0b1111]);
+    });
+});
+
+test("basic functionality (BigInt)", () => {
+    [BigInt64Array, BigUint64Array].forEach(ArrayType => {
+        const array = new ArrayType(2);
+        array[0] = 0b0000n;
+        array[1] = 0b0101n;
+
+        expect(Atomics.or(array, 0, 0b0000n)).toBe(0b0000n);
+        expect(array).toEqual([0b0000n, 0b0101n]);
+
+        expect(Atomics.or(array, 0, 0b1111n)).toBe(0b0000n);
+        expect(array).toEqual([0b1111n, 0b0101n]);
+
+        expect(Atomics.or(array, 1, 0b0101n)).toBe(0b0101n);
+        expect(array).toEqual([0b1111n, 0b0101n]);
+
+        expect(Atomics.or(array, 1, 0b1000n)).toBe(0b0101n);
+        expect(array).toEqual([0b1111n, 0b1101n]);
+
+        expect(Atomics.or(array, 1, 0b0010n)).toBe(0b1101n);
+        expect(array).toEqual([0b1111n, 0b1111n]);
+    });
+});