import { describe } from 'bun:test'
import { expect, test } from 'bun:test'

describe('while', () => {
  test('basic variable', () => {
    expect(`
      a = true
      b = ''
      while a: 
        a = false
        b = done
      end
      b`)
      .toEvaluateTo('done')
  })

  test('basic expression', () => {
    expect(`
      a = 0
      while a < 10: 
        a += 1
      end
      a`)
      .toEvaluateTo(10)
  })

  test('compound expression', () => {
    expect(`
      a = 1
      b = 0
      while a > 0 and b < 100:  
        b += 1
      end
      b`)
      .toEvaluateTo(100)
  })

  test('returns value', () => {
    expect(`
      a = 0
      ret = while a < 10: 
        a += 1
        done
      end
      ret`)
      .toEvaluateTo('done')
  })
})