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LibJS: Add %TypedArray%.prototype.lastIndexOf
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3 changed files with 94 additions and 0 deletions
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const TYPED_ARRAYS = [
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Uint8Array,
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Uint8ClampedArray,
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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("basic functionality", () => {
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TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.lastIndexOf).toHaveLength(1);
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const typedArray = new T(3);
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typedArray[0] = 1;
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typedArray[1] = 2;
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typedArray[2] = 2;
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expect(typedArray.lastIndexOf(2)).toBe(2);
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expect(typedArray.lastIndexOf(-1)).toBe(-1);
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expect(typedArray.lastIndexOf(Infinity)).toBe(-1);
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expect(typedArray.lastIndexOf(2, 2)).toBe(2);
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expect(typedArray.lastIndexOf(2, -2)).toBe(1);
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});
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BIGINT_TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.lastIndexOf).toHaveLength(1);
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const typedArray = new T(3);
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typedArray[0] = 1n;
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typedArray[1] = 2n;
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typedArray[2] = 2n;
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expect(typedArray.lastIndexOf(2n)).toBe(2);
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expect(typedArray.lastIndexOf(-1n)).toBe(-1);
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expect(typedArray.lastIndexOf(2n, 2)).toBe(2);
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expect(typedArray.lastIndexOf(2n, -2)).toBe(1);
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});
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});
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