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LibJS: Add %TypedArray%.prototype.lastIndexOf

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Idan Horowitz 2021-07-08 04:39:37 +03:00 • committed by Linus Groh
parent 6343bfa9d7
commit f0abcde00c
3 changed files with 94 additions and 0 deletions
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44
Userland/Libraries/LibJS/Tests/builtins/TypedArray/TypedArray.prototype.lastIndexOf.js Normal file
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const TYPED_ARRAYS = [
Uint8Array,
Uint8ClampedArray,
Uint16Array,
Uint32Array,
Int8Array,
Int16Array,
Int32Array,
Float32Array,
Float64Array,
];
const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
test("basic functionality", () => {
TYPED_ARRAYS.forEach(T => {
expect(T.prototype.lastIndexOf).toHaveLength(1);
const typedArray = new T(3);
typedArray[0] = 1;
typedArray[1] = 2;
typedArray[2] = 2;
expect(typedArray.lastIndexOf(2)).toBe(2);
expect(typedArray.lastIndexOf(-1)).toBe(-1);
expect(typedArray.lastIndexOf(Infinity)).toBe(-1);
expect(typedArray.lastIndexOf(2, 2)).toBe(2);
expect(typedArray.lastIndexOf(2, -2)).toBe(1);
});
BIGINT_TYPED_ARRAYS.forEach(T => {
expect(T.prototype.lastIndexOf).toHaveLength(1);
const typedArray = new T(3);
typedArray[0] = 1n;
typedArray[1] = 2n;
typedArray[2] = 2n;
expect(typedArray.lastIndexOf(2n)).toBe(2);
expect(typedArray.lastIndexOf(-1n)).toBe(-1);
expect(typedArray.lastIndexOf(2n, 2)).toBe(2);
expect(typedArray.lastIndexOf(2n, -2)).toBe(1);
});
});