core/api/tailwindcss-master/__tests__/variantsAtRule.test.js

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2022-12-11 13:55:49 +05:00
import postcss from 'postcss'
import plugin from '../src/lib/substituteVariantsAtRules'
import processPlugins from '../src/util/processPlugins'
import resolveConfig from '../src/util/resolveConfig'
import config from '../stubs/defaultConfig.stub.js'
function run(input, opts = config) {
const resolved = resolveConfig([opts])
return postcss([plugin(resolved, processPlugins(resolved.plugins, resolved))]).process(input, {
from: undefined,
})
}
test('it can generate hover variants', () => {
const input = `
@variants hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate disabled variants', () => {
const input = `
@variants disabled {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.disabled\\:banana:disabled { color: yellow; }
.disabled\\:chocolate:disabled { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate checked variants', () => {
const input = `
@variants checked {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.checked\\:banana:checked { color: yellow; }
.checked\\:chocolate:checked { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate active variants', () => {
const input = `
@variants active {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.active\\:banana:active { color: yellow; }
.active\\:chocolate:active { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate visited variants', () => {
const input = `
@variants visited {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.visited\\:banana:visited { color: yellow; }
.visited\\:chocolate:visited { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate focus variants', () => {
const input = `
@variants focus {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.focus\\:banana:focus { color: yellow; }
.focus\\:chocolate:focus { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate focus-within variants', () => {
const input = `
@variants focus-within {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.focus-within\\:banana:focus-within { color: yellow; }
.focus-within\\:chocolate:focus-within { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate focus-visible variants', () => {
const input = `
@variants focus-visible {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.focus-visible\\:banana:focus-visible { color: yellow; }
.focus-visible\\:chocolate:focus-visible { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate motion-reduce variants', () => {
const input = `
@variants motion-reduce {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
@media (prefers-reduced-motion: reduce) {
.motion-reduce\\:banana { color: yellow; }
.motion-reduce\\:chocolate { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate motion-safe variants', () => {
const input = `
@variants motion-safe {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
@media (prefers-reduced-motion: no-preference) {
.motion-safe\\:banana { color: yellow; }
.motion-safe\\:chocolate { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate motion-safe and motion-reduce variants', () => {
const input = `
@variants motion-safe, motion-reduce {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
@media (prefers-reduced-motion: no-preference) {
.motion-safe\\:banana { color: yellow; }
.motion-safe\\:chocolate { color: brown; }
}
@media (prefers-reduced-motion: reduce) {
.motion-reduce\\:banana { color: yellow; }
.motion-reduce\\:chocolate { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('motion-reduce variants stack with basic variants', () => {
const input = `
@variants motion-reduce, hover, group-hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
.group:hover .group-hover\\:banana { color: yellow; }
.group:hover .group-hover\\:chocolate { color: brown; }
@media (prefers-reduced-motion: reduce) {
.motion-reduce\\:banana { color: yellow; }
.motion-reduce\\:chocolate { color: brown; }
.motion-reduce\\:hover\\:banana:hover { color: yellow; }
.motion-reduce\\:hover\\:chocolate:hover { color: brown; }
.group:hover .motion-reduce\\:group-hover\\:banana { color: yellow; }
.group:hover .motion-reduce\\:group-hover\\:chocolate { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('motion-safe variants stack with basic variants', () => {
const input = `
@variants motion-safe, hover, group-hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
.group:hover .group-hover\\:banana { color: yellow; }
.group:hover .group-hover\\:chocolate { color: brown; }
@media (prefers-reduced-motion: no-preference) {
.motion-safe\\:banana { color: yellow; }
.motion-safe\\:chocolate { color: brown; }
.motion-safe\\:hover\\:banana:hover { color: yellow; }
.motion-safe\\:hover\\:chocolate:hover { color: brown; }
.group:hover .motion-safe\\:group-hover\\:banana { color: yellow; }
.group:hover .motion-safe\\:group-hover\\:chocolate { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('motion-safe and motion-reduce variants stack with basic variants', () => {
const input = `
@variants motion-reduce, motion-safe, hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
@media (prefers-reduced-motion: reduce) {
.motion-reduce\\:banana { color: yellow; }
.motion-reduce\\:chocolate { color: brown; }
.motion-reduce\\:hover\\:banana:hover { color: yellow; }
.motion-reduce\\:hover\\:chocolate:hover { color: brown; }
}
@media (prefers-reduced-motion: no-preference) {
.motion-safe\\:banana { color: yellow; }
.motion-safe\\:chocolate { color: brown; }
.motion-safe\\:hover\\:banana:hover { color: yellow; }
.motion-safe\\:hover\\:chocolate:hover { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate first-child variants', () => {
const input = `
@variants first {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.first\\:banana:first-child { color: yellow; }
.first\\:chocolate:first-child { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate odd variants', () => {
const input = `
@variants odd {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.odd\\:banana:nth-child(odd) { color: yellow; }
.odd\\:chocolate:nth-child(odd) { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate last-child variants', () => {
const input = `
@variants last {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.last\\:banana:last-child { color: yellow; }
.last\\:chocolate:last-child { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate even variants', () => {
const input = `
@variants even {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.even\\:banana:nth-child(even) { color: yellow; }
.even\\:chocolate:nth-child(even) { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate group-hover variants', () => {
const input = `
@variants group-hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.group:hover .group-hover\\:banana { color: yellow; }
.group:hover .group-hover\\:chocolate { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('group-hover variants respect any configured prefix', () => {
const input = `
@variants group-hover {
.tw-banana { color: yellow; }
.tw-chocolate { color: brown; }
}
`
const output = `
.tw-banana { color: yellow; }
.tw-chocolate { color: brown; }
.tw-group:hover .group-hover\\:tw-banana { color: yellow; }
.tw-group:hover .group-hover\\:tw-chocolate { color: brown; }
`
return run(input, {
...config,
prefix: 'tw-',
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate group-focus variants', () => {
const input = `
@variants group-focus {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.group:focus .group-focus\\:banana { color: yellow; }
.group:focus .group-focus\\:chocolate { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('group-focus variants respect any configured prefix', () => {
const input = `
@variants group-focus {
.tw-banana { color: yellow; }
.tw-chocolate { color: brown; }
}
`
const output = `
.tw-banana { color: yellow; }
.tw-chocolate { color: brown; }
.tw-group:focus .group-focus\\:tw-banana { color: yellow; }
.tw-group:focus .group-focus\\:tw-chocolate { color: brown; }
`
return run(input, {
...config,
prefix: 'tw-',
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate hover, active and focus variants', () => {
const input = `
@variants group-hover, hover, focus, active {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.group:hover .group-hover\\:banana { color: yellow; }
.group:hover .group-hover\\:chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
.focus\\:banana:focus { color: yellow; }
.focus\\:chocolate:focus { color: brown; }
.active\\:banana:active { color: yellow; }
.active\\:chocolate:active { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it can generate hover, active and focus variants for multiple classes in one rule', () => {
const input = `
@variants hover, focus, active {
.banana, .lemon { color: yellow; }
.chocolate, .coconut { color: brown; }
}
`
const output = `
.banana, .lemon { color: yellow; }
.chocolate, .coconut { color: brown; }
.hover\\:banana:hover, .hover\\:lemon:hover { color: yellow; }
.hover\\:chocolate:hover, .hover\\:coconut:hover { color: brown; }
.focus\\:banana:focus, .focus\\:lemon:focus { color: yellow; }
.focus\\:chocolate:focus, .focus\\:coconut:focus { color: brown; }
.active\\:banana:active, .active\\:lemon:active { color: yellow; }
.active\\:chocolate:active, .active\\:coconut:active { color: brown; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('it wraps the output in a responsive at-rule if responsive is included as a variant', () => {
const input = `
@variants responsive, hover, focus {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
@responsive {
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
.focus\\:banana:focus { color: yellow; }
.focus\\:chocolate:focus { color: brown; }
}
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('variants are generated in the order specified', () => {
const input = `
@variants focus, active, hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.focus\\:banana:focus { color: yellow; }
.focus\\:chocolate:focus { color: brown; }
.active\\:banana:active { color: yellow; }
.active\\:chocolate:active { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
`
return run(input, {
...config,
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('the built-in variant pseudo-selectors are appended before any pseudo-elements', () => {
const input = `
@variants hover, focus-within, focus-visible, focus, active, group-hover {
.placeholder-yellow::placeholder { color: yellow; }
}
`
const output = `
.placeholder-yellow::placeholder { color: yellow; }
.hover\\:placeholder-yellow:hover::placeholder { color: yellow; }
.focus-within\\:placeholder-yellow:focus-within::placeholder { color: yellow; }
.focus-visible\\:placeholder-yellow:focus-visible::placeholder { color: yellow; }
.focus\\:placeholder-yellow:focus::placeholder { color: yellow; }
.active\\:placeholder-yellow:active::placeholder { color: yellow; }
.group:hover .group-hover\\:placeholder-yellow::placeholder { color: yellow; }
`
return run(input).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('the default variant can be generated in a specified position', () => {
const input = `
@variants focus, active, DEFAULT, hover {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.focus\\:banana:focus { color: yellow; }
.focus\\:chocolate:focus { color: brown; }
.active\\:banana:active { color: yellow; }
.active\\:chocolate:active { color: brown; }
.banana { color: yellow; }
.chocolate { color: brown; }
.hover\\:banana:hover { color: yellow; }
.hover\\:chocolate:hover { color: brown; }
`
return run(input, {
...config,
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('nested rules are not modified', () => {
const input = `
@variants focus, active, hover {
.banana {
color: yellow;
.chocolate { color: brown; }
}
}
`
const output = `
.banana {
color: yellow;
.chocolate { color: brown; }
}
.focus\\:banana:focus {
color: yellow;
.chocolate { color: brown; }
}
.active\\:banana:active {
color: yellow;
.chocolate { color: brown; }
}
.hover\\:banana:hover {
color: yellow;
.chocolate { color: brown; }
}
`
return run(input, {
...config,
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('plugin variants can modify rules using the raw PostCSS API', () => {
const input = `
@variants important {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.\\!banana { color: yellow !important; }
.\\!chocolate { color: brown !important; }
`
return run(input, {
...config,
plugins: [
...config.plugins,
function ({ addVariant }) {
addVariant('important', ({ container }) => {
container.walkRules((rule) => {
rule.selector = `.\\!${rule.selector.slice(1)}`
rule.walkDecls((decl) => {
decl.important = true
})
})
})
},
],
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('plugin variants can modify selectors with a simplified API', () => {
const input = `
@variants first-child {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
.first-child\\:banana:first-child { color: yellow; }
.first-child\\:chocolate:first-child { color: brown; }
`
return run(input, {
...config,
plugins: [
...config.plugins,
function ({ addVariant, e }) {
addVariant('first-child', ({ modifySelectors, separator }) => {
modifySelectors(({ className }) => {
return `.${e(`first-child${separator}${className}`)}:first-child`
})
})
},
],
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('plugin variants that use modify selectors need to manually escape the class name they are modifying', () => {
const input = `
@variants first-child {
.banana-1\\/2 { color: yellow; }
.chocolate-1\\.5 { color: brown; }
}
`
const output = `
.banana-1\\/2 { color: yellow; }
.chocolate-1\\.5 { color: brown; }
.first-child\\:banana-1\\/2:first-child { color: yellow; }
.first-child\\:chocolate-1\\.5:first-child { color: brown; }
`
return run(input, {
...config,
plugins: [
...config.plugins,
function ({ addVariant, e }) {
addVariant('first-child', ({ modifySelectors, separator }) => {
modifySelectors(({ className }) => {
return `.${e(`first-child${separator}${className}`)}:first-child`
})
})
},
],
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})
test('plugin variants can wrap rules in another at-rule using the raw PostCSS API', () => {
const input = `
@variants supports-grid {
.banana { color: yellow; }
.chocolate { color: brown; }
}
`
const output = `
.banana { color: yellow; }
.chocolate { color: brown; }
@supports (display: grid) {
.supports-grid\\:banana { color: yellow; }
.supports-grid\\:chocolate { color: brown; }
}
`
return run(input, {
...config,
plugins: [
...config.plugins,
function ({ addVariant, e }) {
addVariant('supports-grid', ({ container, separator }) => {
const supportsRule = postcss.atRule({
name: 'supports',
params: '(display: grid)',
})
supportsRule.nodes = container.nodes
container.nodes = [supportsRule]
supportsRule.walkRules((rule) => {
rule.selector = `.${e(`supports-grid${separator}${rule.selector.slice(1)}`)}`
})
})
},
],
}).then((result) => {
expect(result.css).toMatchCss(output)
expect(result.warnings().length).toBe(0)
})
})