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import postcss from 'postcss'
import type { PluginCreator } from 'postcss'
// Since the cssnano-preset-simple.js will be bundled into cssnano-simple
// during pre-compilation, we need to test against the source file directly
// @ts-expect-error -- untyped file
import cssnanoPresetSimple from './cssnano-preset-simple'
const cssnanoPlugin: PluginCreator<any> = (options = {}) => {
const plugins: any[] = []
const nanoPlugins = cssnanoPresetSimple(options).plugins
for (const nanoPlugin of nanoPlugins) {
if (Array.isArray(nanoPlugin)) {
let [processor, opts] = nanoPlugin
if (
typeof opts === 'undefined' ||
(typeof opts === 'object' && !opts.exclude) ||
(typeof opts === 'boolean' && opts === true)
) {
plugins.push(processor(opts))
}
} else {
plugins.push(nanoPlugin)
}
}
return postcss(plugins)
}
cssnanoPlugin.postcss = true
function noopTemplate(strings: TemplateStringsArray, ...keys: string[]) {
const lastIndex = strings.length - 1
return (
strings.slice(0, lastIndex).reduce((p, s, i) => p + s + keys[i], '') +
strings[lastIndex]
)
}
describe('https://github.com/Timer/cssnano-preset-simple/issues/1', () => {
test('evaluates without error', () => {
cssnanoPresetSimple()
})
})
describe('cssnano accepts plugin configuration', () => {
test('should not remove all comments', async () => {
const input = noopTemplate`
p {
/*! heading */
color: yellow;
}
`
const res = await postcss([cssnanoPlugin({ discardComments: {} })]).process(
input,
{
from: 'input.css',
to: 'output.css',
}
)
expect(res.css).not.toBe('p{color:#ff0}')
})
test('should remove all comments', async () => {
const input = noopTemplate`
p {
/*! heading */
color: yellow;
}
`
const res = await postcss([
cssnanoPlugin({ discardComments: { removeAll: true } }),
]).process(input, {
from: 'input.css',
to: 'output.css',
})
expect(res.css).toBe('p{color:#ff0}')
})
})
describe('property sorting', () => {
test('should result in correct border width', async () => {
const input = noopTemplate`
p {
border: 1px solid var(--test);
border-radius: var(--test);
border-width: 0;
}
`
const res = await postcss([cssnanoPlugin]).process(input, {
from: 'input.css',
to: 'output.css',
})
expect(res.css).toMatchInlineSnapshot(
`"p{border-width:1px;border-radius:var(--test);border:0 solid var(--test)}"`
)
})
})
describe('with escaped selector', () => {
test('should not misplace the backslash', async () => {
const input = `
.foo\\,2 {
background: blue;
}
`
const res = await postcss([cssnanoPlugin]).process(input, {
from: 'input.css',
to: 'output.css',
})
expect(res.css).toMatchInlineSnapshot(`".foo\\,2{background:blue}"`)
})
})
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