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LibJS: Add %TypedArray%.prototype.some

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Luke 2021-06-18 17:27:07 +01:00 committed by Linus Groh
parent 68f11a272b
commit 8be7bdaac3
3 changed files with 86 additions and 0 deletions

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const TYPED_ARRAYS = [
Uint8Array,
Uint16Array,
Uint32Array,
Int8Array,
Int16Array,
Int32Array,
Float32Array,
Float64Array,
];
const BIGINT_TYPED_ARRAYS = [BigUint64Array, BigInt64Array];
test("length is 1", () => {
TYPED_ARRAYS.forEach(T => {
expect(T.prototype.some).toHaveLength(1);
});
BIGINT_TYPED_ARRAYS.forEach(T => {
expect(T.prototype.some).toHaveLength(1);
});
});
describe("errors", () => {
function errorTests(T) {
test(`requires at least one argument (${T.name})`, () => {
expect(() => {
new T().some();
}).toThrowWithMessage(
TypeError,
"TypedArray.prototype.some() requires at least one argument"
);
});
test(`callback must be a function (${T.name})`, () => {
expect(() => {
new T().some(undefined);
}).toThrowWithMessage(TypeError, "undefined is not a function");
});
}
TYPED_ARRAYS.forEach(T => errorTests(T));
BIGINT_TYPED_ARRAYS.forEach(T => errorTests(T));
});
test("basic functionality", () => {
TYPED_ARRAYS.forEach(T => {
const typedArray = new T([2, 4, 6]);
expect(typedArray.some(value => value === 2)).toBeTrue();
expect(typedArray.some(value => value === 4)).toBeTrue();
expect(typedArray.some(value => value === 6)).toBeTrue();
expect(typedArray.some(value => value % 2 === 0)).toBeTrue();
expect(typedArray.some(value => value % 2 === 1)).toBeFalse();
expect(typedArray.some(value => value < 2)).toBeFalse();
expect(typedArray.some(value => value > 2)).toBeTrue();
});
BIGINT_TYPED_ARRAYS.forEach(T => {
const typedArray = new T([2n, 4n, 6n]);
expect(typedArray.some(value => value === 2n)).toBeTrue();
expect(typedArray.some(value => value === 4n)).toBeTrue();
expect(typedArray.some(value => value === 6n)).toBeTrue();
expect(typedArray.some(value => value % 2n === 0n)).toBeTrue();
expect(typedArray.some(value => value % 2n === 1n)).toBeFalse();
expect(typedArray.some(value => value < 2n)).toBeFalse();
expect(typedArray.some(value => value > 2n)).toBeTrue();
});
});