import { expect, test, vi } from "vitest"

import { randomInteger } from "#Source/random/index.ts"

test("randomInteger returns expected output across ranges and available random sources", () => {
  const singleBoundValue = randomInteger(5)
  expect(singleBoundValue).toBeGreaterThanOrEqual(0)
  expect(singleBoundValue).toBeLessThanOrEqual(5)
  expect(Number.isInteger(singleBoundValue)).toBe(true)

  const reversedRangeValue = randomInteger(8, 3)
  expect(reversedRangeValue).toBeGreaterThanOrEqual(3)
  expect(reversedRangeValue).toBeLessThanOrEqual(8)
  expect(Number.isInteger(reversedRangeValue)).toBe(true)

  expect(randomInteger(4, 4)).toBe(4)
  expect(() => randomInteger(1.5)).toThrow(TypeError)
  expect(() => randomInteger(Number.NaN)).toThrow(TypeError)
  expect(() => randomInteger(1, Number.POSITIVE_INFINITY)).toThrow(TypeError)

  vi.stubGlobal("crypto", undefined)

  try {
    const fallbackValue = randomInteger(-2, 2)
    expect(fallbackValue).toBeGreaterThanOrEqual(-2)
    expect(fallbackValue).toBeLessThanOrEqual(2)
    expect(Number.isInteger(fallbackValue)).toBe(true)
  } finally {
    vi.unstubAllGlobals()
  }
})