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modify-selectors.test.js
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modify-selectors.test.js
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const postcss = require('postcss')
const tailwind = require('../index.js')
const fs = require('fs')
const path = require('path')
const selectorParser = require('postcss-selector-parser')
function run(input, config = {}) {
return postcss(tailwind(config)).process(input, { from: path.resolve(__filename) })
}
test('modify selectors', () => {
let config = {
darkMode: 'class',
purge: [path.resolve(__dirname, './modify-selectors.test.html')],
corePlugins: { preflight: false },
theme: {},
plugins: [
function ({ addVariant, e }) {
addVariant('foo', ({ modifySelectors, separator }) => {
modifySelectors(({ selector }) => {
return selectorParser((selectors) => {
selectors.walkClasses((classNode) => {
classNode.value = `foo${separator}${classNode.value}`
classNode.parent.insertBefore(classNode, selectorParser().astSync(`.foo `))
})
}).processSync(selector)
})
})
},
],
}
let css = `
@tailwind components;
@tailwind utilities;
@layer components {
.markdown > p {
margin-top: 12px;
}
}
`
return run(css, config).then((result) => {
let expectedPath = path.resolve(__dirname, './modify-selectors.test.css')
let expected = fs.readFileSync(expectedPath, 'utf8')
expect(result.css).toMatchFormattedCss(expected)
})
})