postcss/test/rule.test.js

let parse = require('../lib/parse')
let Rule = require('../lib/rule')

it('initializes with properties', () => {
  let rule = new Rule({ selector: 'a' })
  expect(rule.selector).toEqual('a')
})

it('returns array in selectors', () => {
  let rule = new Rule({ selector: 'a,b' })
  expect(rule.selectors).toEqual(['a', 'b'])
})

it('trims selectors', () => {
  let rule = new Rule({ selector: '.a\n, .b  , .c' })
  expect(rule.selectors).toEqual(['.a', '.b', '.c'])
})

it('is smart about selectors commas', () => {
  let rule = new Rule({
    selector: '[foo=\'a, b\'], a:-moz-any(:focus, [href*=\',\'])'
  })
  expect(rule.selectors).toEqual([
    '[foo=\'a, b\']',
    'a:-moz-any(:focus, [href*=\',\'])'
  ])
})

it('receive array in selectors', () => {
  let rule = new Rule({ selector: 'i, b' })
  rule.selectors = ['em', 'strong']
  expect(rule.selector).toEqual('em, strong')
})

it('saves separator in selectors', () => {
  let rule = new Rule({ selector: 'i,\nb' })
  rule.selectors = ['em', 'strong']
  expect(rule.selector).toEqual('em,\nstrong')
})

it('uses between to detect separator in selectors', () => {
  let rule = new Rule({ selector: 'b', raws: { between: '' } })
  rule.selectors = ['b', 'strong']
  expect(rule.selector).toEqual('b,strong')
})

it('uses space in separator be default in selectors', () => {
  let rule = new Rule({ selector: 'b' })
  rule.selectors = ['b', 'strong']
  expect(rule.selector).toEqual('b, strong')
})

it('selectors works in constructor', () => {
  let rule = new Rule({ selectors: ['a', 'b'] })
  expect(rule.selector).toEqual('a, b')
})

it('inserts default spaces', () => {
  let rule = new Rule({ selector: 'a' })
  expect(rule.toString()).toEqual('a {}')
  rule.append({ prop: 'color', value: 'black' })
  expect(rule.toString()).toEqual('a {\n    color: black\n}')
})

it('clones spaces from another rule', () => {
  let root = parse('b{\n  }')
  let rule = new Rule({ selector: 'em' })
  root.append(rule)
  expect(root.toString()).toEqual('b{\n  }\nem{\n  }')
})

it('uses different spaces for empty rules', () => {
  let root = parse('a{}\nb{\n a:1\n}')
  let rule = new Rule({ selector: 'em' })
  root.append(rule)
  expect(root.toString()).toEqual('a{}\nb{\n a:1\n}\nem{}')

  rule.append({ prop: 'top', value: '0' })
  expect(root.toString()).toEqual('a{}\nb{\n a:1\n}\nem{\n top:0\n}')
})