import assert from 'assert'
import math from '#nanomath'
import {NumberT} from '#number/NumberT.js'

describe('generic utility functions', () => {
   it('tests whether an element is zero', () => {
      const {isZero} = math
      assert(!isZero(3))
      assert(isZero(3e-16))
      assert(isZero(false))
      assert(!isZero(true))
      assert(isZero(undefined))
      assert(isZero(math.types.Complex(NumberT).zero))
      assert(isZero(math.complex(-2e-16, 4e-17)))
      assert(!isZero(math.complex(true)))
   })
   it('tests whether an element is real', () => {
      const {isReal} = math
      assert(isReal(Infinity))
      assert(isReal(false))
      assert(isReal(math.types.Complex(NumberT).one))
      assert(isReal(math.complex(-3.25, 4e-16)))
      assert(!isReal(math.complex(3, 4)))
   })
})