pulsar/spec/style-manager-spec.js

150 lines
6.9 KiB
JavaScript

const temp = require('temp').track()
const StyleManager = require('../src/style-manager')
describe('StyleManager', () => {
let [styleManager, addEvents, removeEvents, updateEvents] = []
beforeEach(() => {
styleManager = new StyleManager({configDirPath: temp.mkdirSync('atom-config')})
addEvents = []
removeEvents = []
updateEvents = []
styleManager.onDidAddStyleElement((event) => { addEvents.push(event) })
styleManager.onDidRemoveStyleElement((event) => { removeEvents.push(event) })
styleManager.onDidUpdateStyleElement((event) => { updateEvents.push(event) })
})
afterEach(() => {
temp.cleanupSync()
})
describe('::addStyleSheet(source, params)', () => {
it('adds a style sheet based on the given source and returns a disposable allowing it to be removed', () => {
const disposable = styleManager.addStyleSheet('a {color: red}')
expect(addEvents.length).toBe(1)
expect(addEvents[0].textContent).toBe('a {color: red}')
const styleElements = styleManager.getStyleElements()
expect(styleElements.length).toBe(1)
expect(styleElements[0].textContent).toBe('a {color: red}')
disposable.dispose()
expect(removeEvents.length).toBe(1)
expect(removeEvents[0].textContent).toBe('a {color: red}')
expect(styleManager.getStyleElements().length).toBe(0)
})
describe('atom-text-editor shadow DOM selectors upgrades', () => {
beforeEach(() => {
// attach styles element to the DOM to parse CSS rules
styleManager.onDidAddStyleElement((styleElement) => { jasmine.attachToDOM(styleElement) })
})
it('removes the ::shadow pseudo-element from atom-text-editor selectors', () => {
styleManager.addStyleSheet(`
atom-text-editor::shadow .class-1, atom-text-editor::shadow .class-2 { color: red }
atom-text-editor::shadow > .class-3 { color: yellow }
atom-text-editor .class-4 { color: blue }
another-element::shadow .class-5 { color: white }
atom-text-editor[data-grammar*=\"js\"]::shadow .class-6 { color: green; }
atom-text-editor[mini].is-focused::shadow .class-7 { color: green; }
`)
expect(Array.from(styleManager.getStyleElements()[0].sheet.cssRules).map((r) => r.selectorText)).toEqual([
'atom-text-editor.editor .class-1, atom-text-editor.editor .class-2',
'atom-text-editor.editor > .class-3',
'atom-text-editor .class-4',
'another-element::shadow .class-5',
'atom-text-editor[data-grammar*=\"js\"].editor .class-6',
'atom-text-editor[mini].is-focused.editor .class-7'
])
})
describe('when a selector targets the atom-text-editor shadow DOM', () => {
it('prepends "--syntax" to class selectors matching a grammar scope name and not already starting with "syntax--"', () => {
styleManager.addStyleSheet(`
.class-1 { color: red }
.source > .js, .source.coffee { color: green }
.syntax--source { color: gray }
#id-1 { color: blue }
`, {context: 'atom-text-editor'})
expect(Array.from(styleManager.getStyleElements()[0].sheet.cssRules).map((r) => r.selectorText)).toEqual([
'.class-1',
'.syntax--source > .syntax--js, .syntax--source.syntax--coffee',
'.syntax--source',
'#id-1'
])
styleManager.addStyleSheet(`
.source > .js, .source.coffee { color: green }
atom-text-editor::shadow .source > .js { color: yellow }
atom-text-editor[mini].is-focused::shadow .source > .js { color: gray }
atom-text-editor .source > .js { color: red }
`)
expect(Array.from(styleManager.getStyleElements()[1].sheet.cssRules).map((r) => r.selectorText)).toEqual([
'.source > .js, .source.coffee',
'atom-text-editor.editor .syntax--source > .syntax--js',
'atom-text-editor[mini].is-focused.editor .syntax--source > .syntax--js',
'atom-text-editor .source > .js'
])
})
})
it('replaces ":host" with "atom-text-editor" only when the context of a style sheet is "atom-text-editor"', () => {
styleManager.addStyleSheet(':host .class-1, :host .class-2 { color: red; }')
expect(Array.from(styleManager.getStyleElements()[0].sheet.cssRules).map((r) => r.selectorText)).toEqual([
':host .class-1, :host .class-2'
])
styleManager.addStyleSheet(':host .class-1, :host .class-2 { color: red; }', {context: 'atom-text-editor'})
expect(Array.from(styleManager.getStyleElements()[1].sheet.cssRules).map((r) => r.selectorText)).toEqual([
'atom-text-editor .class-1, atom-text-editor .class-2'
])
})
it('does not transform CSS rules with invalid syntax', () => {
styleManager.addStyleSheet("atom-text-editor::shadow .class-1 { font-family: inval'id }")
expect(Array.from(styleManager.getStyleElements()[0].sheet.cssRules).map((r) => r.selectorText)).toEqual([
'atom-text-editor::shadow .class-1'
])
})
it('does not throw exceptions on rules with no selectors', () => {
styleManager.addStyleSheet('@media screen {font-size: 10px}', {context: 'atom-text-editor'})
})
})
describe('when a sourcePath parameter is specified', () => {
it('ensures a maximum of one style element for the given source path, updating a previous if it exists', () => {
const disposable1 = styleManager.addStyleSheet('a {color: red}', {sourcePath: '/foo/bar'})
expect(addEvents.length).toBe(1)
expect(addEvents[0].getAttribute('source-path')).toBe('/foo/bar')
const disposable2 = styleManager.addStyleSheet('a {color: blue}', {sourcePath: '/foo/bar'})
expect(addEvents.length).toBe(1)
expect(updateEvents.length).toBe(1)
expect(updateEvents[0].getAttribute('source-path')).toBe('/foo/bar')
expect(updateEvents[0].textContent).toBe('a {color: blue}')
disposable2.dispose()
addEvents = []
styleManager.addStyleSheet('a {color: yellow}', {sourcePath: '/foo/bar'})
expect(addEvents.length).toBe(1)
expect(addEvents[0].getAttribute('source-path')).toBe('/foo/bar')
expect(addEvents[0].textContent).toBe('a {color: yellow}')
})
})
describe('when a priority parameter is specified', () => {
it('inserts the style sheet based on the priority', () => {
styleManager.addStyleSheet('a {color: red}', {priority: 1})
styleManager.addStyleSheet('a {color: blue}', {priority: 0})
styleManager.addStyleSheet('a {color: green}', {priority: 2})
styleManager.addStyleSheet('a {color: yellow}', {priority: 1})
expect(styleManager.getStyleElements().map((elt) => elt.textContent)).toEqual([
'a {color: blue}',
'a {color: red}',
'a {color: yellow}',
'a {color: green}'
])
})
})
})
})