@positron/ts-utils@0.1.0

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import { expect, test } from 'npm:vitest@^1.6.0';
import {
  assert,
  assertHasProperty,
  hasProperty,
  isArrayElement,
  isArrayOf,
  isFunction,
  isNonNull,
  isNumber,
  isObject,
  isObjectOf,
  isOptional,
  isString,
} from './index.ts';

test('isNonNull', () => {
  expect(isNonNull('')).toBe(true);
  expect(isNonNull(0)).toBe(true);
  expect(isNonNull(false)).toBe(true);
  expect(isNonNull(undefined)).toBe(false);
  expect(isNonNull(null)).toBe(false);
});

test('isNumber', () => {
  expect(isNumber(0)).toBe(true);
  expect(isNumber(1)).toBe(true);
  expect(isNumber(NaN)).toBe(true);
  expect(isNumber(Infinity)).toBe(true);
  expect(isNumber('')).toBe(false);
  expect(isNumber(false)).toBe(false);
  expect(isNumber(undefined)).toBe(false);
  expect(isNumber(null)).toBe(false);
});

test('isString', () => {
  expect(isString('')).toBe(true);
  expect(isString('a')).toBe(true);
  expect(isString('0')).toBe(true);
  expect(isString('false')).toBe(true);
  expect(isString(0)).toBe(false);
  expect(isString(false)).toBe(false);
  expect(isString(undefined)).toBe(false);
  expect(isString(null)).toBe(false);
});

test('isFunction', () => {
  expect(isFunction(() => {})).toBe(true);
  expect(isFunction(function () {})).toBe(true);
  expect(isFunction(function named() {})).toBe(true);
  expect(isFunction(class {})).toBe(true); // NOSONAR
  expect(isFunction(class Named {})).toBe(true); // NOSONAR
  expect(isFunction({})).toBe(false);
  expect(isFunction('')).toBe(false);
  expect(isFunction(0)).toBe(false);
  expect(isFunction(false)).toBe(false);
  expect(isFunction(undefined)).toBe(false);
  expect(isFunction(null)).toBe(false);
});

test('isObject', () => {
  expect(isObject({})).toBe(true);
  expect(isObject({ a: 0 })).toBe(true);
  expect(isObject([])).toBe(true);
  expect(isObject(null)).toBe(false);
  expect(isObject('')).toBe(false);
  expect(isObject(0)).toBe(false);
  expect(isObject(false)).toBe(false);
  expect(isObject(undefined)).toBe(false);
});

test('isObjectOf', () => {
  expect(isObjectOf({}, isNumber)).toBe(true);
  expect(isObjectOf({ a: 0 }, isNumber)).toBe(true);
  expect(isObjectOf({ a: '0' }, isNumber)).toBe(false);
  expect(isObjectOf({ a: 0 }, isString)).toBe(false);
  expect(isObjectOf([], isNumber)).toBe(true);
});

test('isArrayOf', () => {
  expect(isArrayOf([], isNumber)).toBe(true);
  expect(isArrayOf([0], isNumber)).toBe(true);
  expect(isArrayOf([0, 1], isNumber)).toBe(true);
  expect(isArrayOf([0, '1'], isNumber)).toBe(false);
  expect(isArrayOf([0], isString)).toBe(false);
  expect(isArrayOf({}, isNumber)).toBe(false);
  expect(isArrayOf(null, isNumber)).toBe(false);
  expect(isArrayOf('', isNumber)).toBe(false);
  expect(isArrayOf(0, isNumber)).toBe(false);
  expect(isArrayOf(false, isNumber)).toBe(false);
  expect(isArrayOf(undefined, isNumber)).toBe(false);
});

test('isArrayElement', () => {
  expect(isArrayElement(0, [0])).toBe(true);
  expect(isArrayElement(1, [0, 1])).toBe(true);
  expect(isArrayElement(0, [1, 0])).toBe(true);
  expect(isArrayElement('0', [0])).toBe(false);
  expect(isArrayElement(0, [1])).toBe(false);
  expect(isArrayElement({}, [0])).toBe(false);
  expect(isArrayElement(null, [0])).toBe(false);
  expect(isArrayElement('', [0])).toBe(false);
  expect(isArrayElement(false, [0])).toBe(false);
  expect(isArrayElement(undefined, [0])).toBe(false);
});

test('hasProperty', () => {
  expect(hasProperty({ a: 0 }, 'a', isNumber)).toBe(true);
  expect(hasProperty({ a: 0 }, 'b', isNumber)).toBe(false);
  expect(hasProperty({}, 'a', isNumber)).toBe(false);
});

test('assert', () => {
  expect(() => assert(0, isNumber)).not.toThrow();
  expect(() => assert(0, isString)).toThrow();
});

test('assertHasProperty', () => {
  expect(() => assertHasProperty({ a: 0 }, 'a', isNumber)).not.toThrow();
  expect(() => assertHasProperty({ a: 0 }, 'b', isNumber)).toThrow();
  expect(() => assertHasProperty({}, 'a', isNumber)).toThrow();
});

test('isOptional', () => {
  expect(isOptional(undefined, isNumber)).toBe(true);
  expect(isOptional(null, isNumber)).toBe(false);
  expect(isOptional(0, isNumber)).toBe(true);
  expect(isOptional('0', isNumber)).toBe(false);
  expect(isOptional({}, isNumber)).toBe(false);
  expect(isOptional([], isNumber)).toBe(false);
  expect(isOptional('', isNumber)).toBe(false);
  expect(isOptional(false, isNumber)).toBe(false);
});