postcss-fuss/index.test.js at master · accurat/postcss-fuss · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
const postcss = require('postcss')
const plugin = require('./')
const fussFunctions = require('./fuss-functions')

function removeSpaces(s) {
    return s.toString().replace(/[\n\s]+/g, '')
}

function run(input, output) {
    const fuss = plugin({ functions: fussFunctions })

    return postcss([fuss]).process(input).then(result => {
        expect(removeSpaces(result.css)).toEqual(removeSpaces(output))
        expect(result.warnings().length).toBe(0)
    })
}

it('does not mangle existing CSS', () => run('.asd {}', '.asd {}'))

it('does transform a @fuss function', () => run(`
    @fuss color(blue, #00f);
`, `
    /* color(blue, #00f) */
    .blue { color: #00f }
    .bg-blue { background-color: #00f }
    .b--blue { border-color: #00f }
`))

it('does transform a @fuss function containing css variables', () => run(`
    @fuss color(blue, var(--blue));
`, `
    /* color(blue, var(--blue)) */
    .blue { color: var(--blue) }
    .bg-blue { background-color: var(--blue) }
    .b--blue { border-color: var(--blue) }
`))

it('does transform a @fuss second-order function', () => run(`
    @fuss color-variants() {
      .gray { color: #ccc }
    }
`, `
    /* color-variants() */
    .gray { color: #ccc }
    .gray-light { color: color-mod(#ccc lightness(+10%)) }
    .gray-dark { color: color-mod(#ccc lightness(-10%)) }
`))

it('does transform a @fuss block function', () => run(`
    @fuss responsive() {
      .w-50 { width: 50% }
    }
`, `
    /* responsive() */
    .w-50 { width: 50% }
    @media screen and (min-width: 480px) and (max-width: 1024px) {
        .w-50-m { width: 50% }
    }
    @media screen and (min-width: 1024px) {
        .w-50-l { width: 50% }
    }
`))

it('does transform a @fuss block function with a @fuss fn inside', () => run(`
    @fuss responsive() {
      @fuss color(red, #f00);
    }
`, `
    /* responsive() */

    /* color(red, #f00) */
    .red { color: #f00 }
    .bg-red { background-color: #f00 }
    .b--red { border-color: #f00 }

    /* color(red, #f00) */
    @media screen and (min-width: 480px) and (max-width: 1024px) {
        .red-m { color: #f00 }
    }
    @media screen and (min-width: 480px) and (max-width: 1024px) {
        .bg-red-m { background-color: #f00 }
    }
    @media screen and (min-width: 480px) and (max-width: 1024px) {
        .b--red-m { border-color: #f00 }
    }

    /* color(red, #f00) */
    @media screen and (min-width: 1024px) {
        .red-l { color: #f00 }
    }
    @media screen and (min-width: 1024px) {
        .bg-red-l { background-color: #f00 }
    }
    @media screen and (min-width: 1024px) {
        .b--red-l { border-color: #f00 }
    }

`))

it('does work with a nesting of three', () => run(`
    @fuss color-states() {
      @fuss color-variants() {
        @fuss color(accent, #BADA55);
      }
    }
`, `
    /* color-states() */


    /* color-variants() */

    /* color(accent, #BADA55) */
    .accent { color: #BADA55 }
    .bg-accent { background-color: #BADA55 }
    .b--accent { border-color: #BADA55 }

    /* color(accent, #BADA55) */
    .accent-light { color: color-mod(#BADA55 lightness(+10%)) }
    .accent-dark { color: color-mod(#BADA55 lightness(-10%)) }
    .bg-accent-light { background-color: color-mod(#BADA55 lightness(+10%)) }
    .bg-accent-dark { background-color: color-mod(#BADA55 lightness(-10%)) }
    .b--accent-light { border-color: color-mod(#BADA55 lightness(+10%)) }
    .b--accent-dark { border-color: color-mod(#BADA55 lightness(-10%)) }


    /* color-variants() */

    /* color(accent, #BADA55) */
    .hover-accent:hover { color: #BADA55 }
    .active-accent:hover:active { color: #BADA55 }
    .focus-accent:focus { color: #BADA55 }
    .hover-bg-accent:hover { background-color: #BADA55 }
    .active-bg-accent:hover:active { background-color: #BADA55 }
    .focus-bg-accent:focus { background-color: #BADA55 }
    .hover-b--accent:hover { border-color: #BADA55 }
    .active-b--accent:hover:active { border-color: #BADA55 }
    .focus-b--accent:focus { border-color: #BADA55 }

    /* color(accent, #BADA55) */
    .hover-accent-light:hover { color: color-mod(#BADA55 lightness(+10%)) }
    .active-accent-light:hover:active { color: color-mod(#BADA55 lightness(+10%)) }
    .focus-accent-light:focus { color: color-mod(#BADA55 lightness(+10%)) }
    .hover-accent-dark:hover { color: color-mod(#BADA55 lightness(-10%)) }
    .active-accent-dark:hover:active { color: color-mod(#BADA55 lightness(-10%)) }
    .focus-accent-dark:focus { color: color-mod(#BADA55 lightness(-10%)) }
    .hover-bg-accent-light:hover { background-color: color-mod(#BADA55 lightness(+10%)) }
    .active-bg-accent-light:hover:active { background-color: color-mod(#BADA55 lightness(+10%)) }
    .focus-bg-accent-light:focus { background-color: color-mod(#BADA55 lightness(+10%)) }
    .hover-bg-accent-dark:hover { background-color: color-mod(#BADA55 lightness(-10%)) }
    .active-bg-accent-dark:hover:active { background-color: color-mod(#BADA55 lightness(-10%)) }
    .focus-bg-accent-dark:focus { background-color: color-mod(#BADA55 lightness(-10%)) }
    .hover-b--accent-light:hover { border-color: color-mod(#BADA55 lightness(+10%)) }
    .active-b--accent-light:hover:active { border-color: color-mod(#BADA55 lightness(+10%)) }
    .focus-b--accent-light:focus { border-color: color-mod(#BADA55 lightness(+10%)) }
    .hover-b--accent-dark:hover { border-color: color-mod(#BADA55 lightness(-10%)) }
    .active-b--accent-dark:hover:active { border-color: color-mod(#BADA55 lightness(-10%)) }
    .focus-b--accent-dark:focus { border-color: color-mod(#BADA55 lightness(-10%)) }
`))