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LibJS: Add %TypedArray%.prototype.every
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4 changed files with 130 additions and 0 deletions
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const TYPED_ARRAYS = [
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Uint8Array,
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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("length is 1", () => {
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TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.every).toHaveLength(1);
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});
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BIGINT_TYPED_ARRAYS.forEach(T => {
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expect(T.prototype.every).toHaveLength(1);
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});
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});
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describe("errors", () => {
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function errorTests(T) {
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test(`requires at least one argument (${T.name})`, () => {
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expect(() => {
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new T().every();
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}).toThrowWithMessage(
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TypeError,
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"TypedArray.prototype.every() requires at least one argument"
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);
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});
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test(`callback must be a function (${T.name})`, () => {
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expect(() => {
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new T().every(undefined);
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}).toThrowWithMessage(TypeError, "undefined is not a function");
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});
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}
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TYPED_ARRAYS.forEach(T => errorTests(T));
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BIGINT_TYPED_ARRAYS.forEach(T => errorTests(T));
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});
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test("basic functionality", () => {
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TYPED_ARRAYS.forEach(T => {
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const typedArray = new T([2, 4, 6]);
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expect(typedArray.every(value => value === 2)).toBeFalse();
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expect(typedArray.every(value => value === 4)).toBeFalse();
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expect(typedArray.every(value => value === 6)).toBeFalse();
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expect(typedArray.every(value => value % 2 === 0)).toBeTrue();
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expect(typedArray.every(value => value % 2 === 1)).toBeFalse();
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expect(typedArray.every(value => value < 2)).toBeFalse();
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expect(typedArray.every(value => value > 2)).toBeFalse();
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expect(typedArray.every(value => value >= 2)).toBeTrue();
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});
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BIGINT_TYPED_ARRAYS.forEach(T => {
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const typedArray = new T([2n, 4n, 6n]);
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expect(typedArray.every(value => value === 2n)).toBeFalse();
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expect(typedArray.every(value => value === 4n)).toBeFalse();
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expect(typedArray.every(value => value === 6n)).toBeFalse();
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expect(typedArray.every(value => value % 2n === 0n)).toBeTrue();
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expect(typedArray.every(value => value % 2n === 1n)).toBeFalse();
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expect(typedArray.every(value => value < 2n)).toBeFalse();
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expect(typedArray.every(value => value > 2n)).toBeFalse();
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expect(typedArray.every(value => value >= 2n)).toBeTrue();
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});
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});
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