pulsar/spec/syntax-scope-map-spec.js
Linus Eriksson f51ea2564b Distinguish between anonymous * token and wildcard selector
Co-authored-by: Max Brunsfeld <maxbrunsfeld@github.com>
2018-11-01 18:47:17 +01:00

88 lines
2.7 KiB
JavaScript

const SyntaxScopeMap = require('../src/syntax-scope-map')
describe('SyntaxScopeMap', () => {
it('can match immediate child selectors', () => {
const map = new SyntaxScopeMap({
'a > b > c': 'x',
'b > c': 'y',
'c': 'z'
})
expect(map.get(['a', 'b', 'c'], [0, 0, 0])).toBe('x')
expect(map.get(['d', 'b', 'c'], [0, 0, 0])).toBe('y')
expect(map.get(['d', 'e', 'c'], [0, 0, 0])).toBe('z')
expect(map.get(['e', 'c'], [0, 0, 0])).toBe('z')
expect(map.get(['c'], [0, 0, 0])).toBe('z')
expect(map.get(['d'], [0, 0, 0])).toBe(undefined)
})
it('can match :nth-child pseudo-selectors on leaves', () => {
const map = new SyntaxScopeMap({
'a > b': 'w',
'a > b:nth-child(1)': 'x',
'b': 'y',
'b:nth-child(2)': 'z'
})
expect(map.get(['a', 'b'], [0, 0])).toBe('w')
expect(map.get(['a', 'b'], [0, 1])).toBe('x')
expect(map.get(['a', 'b'], [0, 2])).toBe('w')
expect(map.get(['b'], [0])).toBe('y')
expect(map.get(['b'], [1])).toBe('y')
expect(map.get(['b'], [2])).toBe('z')
})
it('can match :nth-child pseudo-selectors on interior nodes', () => {
const map = new SyntaxScopeMap({
'b:nth-child(1) > c': 'w',
'a > b > c': 'x',
'a > b:nth-child(2) > c': 'y'
})
expect(map.get(['b', 'c'], [0, 0])).toBe(undefined)
expect(map.get(['b', 'c'], [1, 0])).toBe('w')
expect(map.get(['a', 'b', 'c'], [1, 0, 0])).toBe('x')
expect(map.get(['a', 'b', 'c'], [1, 2, 0])).toBe('y')
})
it('allows anonymous tokens to be referred to by their string value', () => {
const map = new SyntaxScopeMap({
'"b"': 'w',
'a > "b"': 'x',
'a > "b":nth-child(1)': 'y'
})
expect(map.get(['b'], [0], true)).toBe(undefined)
expect(map.get(['b'], [0], false)).toBe('w')
expect(map.get(['a', 'b'], [0, 0], false)).toBe('x')
expect(map.get(['a', 'b'], [0, 1], false)).toBe('y')
})
it('supports the wildcard selector', () => {
const map = new SyntaxScopeMap({
'*': 'w',
'a > *': 'x',
'a > *:nth-child(1)': 'y',
'a > *:nth-child(1) > b': 'z'
})
expect(map.get(['b'], [0])).toBe('w')
expect(map.get(['c'], [0])).toBe('w')
expect(map.get(['a', 'b'], [0, 0])).toBe('x')
expect(map.get(['a', 'b'], [0, 1])).toBe('y')
expect(map.get(['a', 'c'], [0, 1])).toBe('y')
expect(map.get(['a', 'c', 'b'], [0, 1, 1])).toBe('z')
expect(map.get(['a', 'c', 'b'], [0, 2, 1])).toBe('w')
})
it('distinguishes between an anonymous * token and the wildcard selector', () => {
const map = new SyntaxScopeMap({
'"*"': 'x',
'a > "b"': 'y'
})
expect(map.get(['b'], [0], false)).toBe(undefined)
expect(map.get(['*'], [0], false)).toBe('x')
})
})