const test = require('tape')
const helpers = require('./helpers')

const AST = require('../src/ast')

test('compiles numbers', t => {
  t.plan(1)

  const result = helpers.compile('5')

  t.equal(result, '5')
})

test('compiles strings', t => {
  t.plan(1)

  const result = helpers.compile('"hello world"')

  t.equal(result, 'hello world')
})

test('compiles core function applications', t => {
  t.plan(4)

  let result = helpers.compile('(+ 10 8)')
  t.equal(result, '18')

  result = helpers.compile('(- 7 3)')
  t.equal(result, '4')

  result = helpers.compile('(* 9 3)')
  t.equal(result, '27')

  result = helpers.compile('(/ 10 2)')
  t.equal(result, '5')
})

test('compiles lambda expressions in the function position', t => {
  t.plan(2)

  let result = helpers.compile('((lambda (x) (+ x 1)) 2)')
  t.equal(result, '3')

  result = helpers.compile('((lambda (x y) (+ x y)) 2 3)')
  t.equal(result, '5')
})