import { expect, test } from "vitest"

import { isNumber } from "#Source/utils/index.ts"

test("isNumber returns true for numbers", () => {
  expect(isNumber(0)).toBe(true)
  expect(isNumber(-1.5)).toBe(true)
  expect(isNumber(Number.NaN)).toBe(true)
})

test("isNumber returns false for non-number values", () => {
  expect(isNumber("1")).toBe(false)
  expect(isNumber(null)).toBe(false)
  expect(isNumber(undefined)).toBe(false)
})