1 | var fs = require('fs')
|
2 | var path = require('path')
|
3 | var test = require('tape')
|
4 | var postcss = require('postcss')
|
5 | var Detector = require('../lib/detect-feature-use')
|
6 |
|
7 |
|
8 |
|
9 |
|
10 |
|
11 | var parseTestCase = function (cssString) {
|
12 | var meta = /\s*\/\*(\s*only)?\s*expect:\s*([a-zA-Z0-9\-:\s\n]*)/
|
13 | var matches = cssString.match(meta)
|
14 | if (!matches) { return }
|
15 |
|
16 | var features = {}
|
17 | matches[2].split('\n')
|
18 | .filter(function (s) {
|
19 | return s.trim().length > 0
|
20 | })
|
21 | .forEach(function (s) {
|
22 | var line = s.replace(/\s*/, '').split(':')
|
23 | var feat = line[0]
|
24 | var count = +line[1]
|
25 | features[feat] = count
|
26 | })
|
27 |
|
28 | if (Object.keys(features).length > 0) {
|
29 | return {
|
30 | only: !!matches[1],
|
31 | expected: features
|
32 | }
|
33 | } else {
|
34 | return false
|
35 | }
|
36 | }
|
37 |
|
38 |
|
39 |
|
40 |
|
41 |
|
42 |
|
43 | var spy = function () {
|
44 | var results = []
|
45 | var fn = function (param) {
|
46 | var feature = param.feature
|
47 | var usage = param.usage
|
48 | var obj = {
|
49 | feature: feature,
|
50 | location: usage.source.start,
|
51 | selector: usage.selector,
|
52 | property: usage.property,
|
53 | value: usage.value
|
54 | }
|
55 |
|
56 | if (results[feature]) {
|
57 | results[feature]
|
58 | } else {
|
59 | results[feature] = []
|
60 | }
|
61 |
|
62 | return results[feature].push(obj)
|
63 | }
|
64 | fn.results = results
|
65 | return fn
|
66 | }
|
67 |
|
68 | var runTest = function (tc, cssString, expected, only) {
|
69 | var features = Object.keys(expected).sort()
|
70 | var testFn = only ? test.only.bind(test) : test
|
71 |
|
72 | testFn('detecting CSS features (' + tc.replace('.css', '') + ')', function (t) {
|
73 | var detector = new Detector(features)
|
74 | var cb = spy()
|
75 | detector.process(postcss.parse(cssString), cb)
|
76 |
|
77 | var res = Object.keys(cb.results).sort()
|
78 | for (var feature in expected) {
|
79 | if (expected[feature] === 0) {
|
80 | t.notOk(cb.results[feature])
|
81 | } else {
|
82 | t.deepEqual(res, features)
|
83 | t.equal(cb.results[feature].length, expected[feature], 'count of ' + feature)
|
84 | }
|
85 | }
|
86 |
|
87 | t.end()
|
88 | })
|
89 | }
|
90 |
|
91 | var caseFiles = fs.readdirSync(path.join(__dirname, '/cases'))
|
92 | .filter(function (tc) { return /\.css$/.test(tc) })
|
93 |
|
94 | var cases = []
|
95 | for (var i = 0; i < caseFiles.length; ++i) {
|
96 | var tc = caseFiles[i]
|
97 |
|
98 | var cssString = fs.readFileSync(path.join(__dirname, 'cases', tc)).toString()
|
99 | var parsed = parseTestCase(cssString)
|
100 | if (parsed) {
|
101 | var testCase = {
|
102 | name: tc,
|
103 | expected: parsed.expected,
|
104 | cssString: cssString
|
105 | }
|
106 | cases.push(testCase)
|
107 | }
|
108 | }
|
109 |
|
110 | cases.forEach(function (testCase) {
|
111 | runTest(testCase.name, testCase.cssString, testCase.expected, cases.length === 1)
|
112 | })
|