forked from vitejs/vite
-
Notifications
You must be signed in to change notification settings - Fork 0
/
babel-restore-jsx.spec.ts
132 lines (118 loc) · 4.62 KB
/
babel-restore-jsx.spec.ts
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
import * as babel from '@babel/core'
import { describe, expect, it } from 'vitest'
import babelRestoreJSX from './babel-restore-jsx'
function jsx(code: string) {
return babel.transform(code, {
parserOpts: { plugins: ['jsx'] },
plugins: [babelRestoreJSX]
})?.code
}
// Tests adapted from: https://github.com/flying-sheep/babel-plugin-transform-react-createelement-to-jsx/blob/63137b6/test/index.js
describe('babel-restore-jsx', () => {
it('should convert 1-argument calls', () => {
expect(jsx('React.createElement("h1")')).toMatchInlineSnapshot(`"<h1 />;"`)
expect(jsx('React.createElement(Foo)')).toMatchInlineSnapshot(`"<Foo />;"`)
expect(jsx('React.createElement(Foo.Bar)')).toMatchInlineSnapshot(
`"<Foo.Bar />;"`
)
expect(jsx('React.createElement(Foo.Bar.Baz)')).toMatchInlineSnapshot(
`"<Foo.Bar.Baz />;"`
)
})
it('should convert effective 1-argument calls (with null or undefined)', () => {
expect(jsx('React.createElement("h1", null)')).toMatchInlineSnapshot(
`"<h1 />;"`
)
expect(jsx('React.createElement("h2", null, null)')).toMatchInlineSnapshot(
`"<h2 />;"`
)
expect(jsx('React.createElement("h3", undefined)')).toMatchInlineSnapshot(
`"<h3 />;"`
)
})
it('should handle props without children', () => {
expect(jsx('React.createElement("h1", {hi: there})')).toMatchInlineSnapshot(
`"<h1 hi={there} />;"`
)
expect(
jsx('React.createElement("h2", {"hi": there})')
).toMatchInlineSnapshot(`"<h2 hi={there} />;"`)
expect(
jsx('React.createElement("h3", {hi: "there"})')
).toMatchInlineSnapshot(`"<h3 hi=\\"there\\" />;"`)
})
it('should handle spread props', () => {
expect(jsx('React.createElement("h1", props)')).toMatchInlineSnapshot(
`"<h1 {...props} />;"`
)
expect(jsx('React.createElement("h1", getProps())')).toMatchInlineSnapshot(
`"<h1 {...getProps()} />;"`
)
})
it('should handle mixed props', () => {
expect(
jsx('React.createElement("h1", _extends({ hi: "there" }, props))')
).toMatchInlineSnapshot(`"<h1 hi=\\"there\\" {...props} />;"`)
expect(
jsx('React.createElement("h1", _extends({}, props, { hi: "there" }))')
).toMatchInlineSnapshot(`"<h1 {...props} hi=\\"there\\" />;"`)
expect(
jsx('React.createElement("h1", { ...props, hi: "there" })')
).toMatchInlineSnapshot(`"<h1 {...props} hi=\\"there\\" />;"`)
})
it('should handle props and ignore “null”/“undefined” children', () => {
expect(
jsx('React.createElement("h1", {hi: there}, null, undefined)')
).toMatchInlineSnapshot(`"<h1 hi={there} />;"`)
})
it('should ignore “null”/“undefined” props and handle children', () => {
expect(
jsx('React.createElement("h1", null, "Header")')
).toMatchInlineSnapshot(`"<h1>Header</h1>;"`)
//this can be created from e.g. '<h2>Header{"harhar"}</h2>', but i think there’s no downside to merging it
expect(
jsx('React.createElement("h2", null, "Header", "harhar")')
).toMatchInlineSnapshot(`"<h2>Headerharhar</h2>;"`)
expect(
jsx('React.createElement("h3", null, React.createElement("i"))')
).toMatchInlineSnapshot(`"<h3><i /></h3>;"`)
expect(
jsx('React.createElement("h4", null, "a", React.createElement("b"), "c")')
).toMatchInlineSnapshot(`"<h4>a<b />c</h4>;"`)
})
it('should handle props and children', () => {
//we extensively tested props and children separately, so only sth. basic
expect(
jsx('React.createElement("h1", {hi: there}, "Header")')
).toMatchInlineSnapshot(`"<h1 hi={there}>Header</h1>;"`)
})
it('should ignore intermingled “null”/“undefined” children', () => {
expect(
jsx('React.createElement("h1", null, null, "Header", undefined)')
).toMatchInlineSnapshot(`"<h1>Header</h1>;"`)
})
it('should handle children in nested expressions', () => {
expect(
jsx(
'React.createElement("h1", null, foo ? React.createElement("p") : null)'
)
).toMatchInlineSnapshot(`"<h1>{foo ? <p /> : null}</h1>;"`)
})
it('should handle lowercase component names', () => {
expect(jsx('React.createElement(aaa)')).toMatchInlineSnapshot(
`"React.createElement(aaa);"`
)
})
it('should not handle contains __self prop', () => {
expect(
jsx('React.createElement(Provider, { __self: this })')
).toMatchInlineSnapshot('"<Provider />;"')
})
it('should not handle contains __source prop', () => {
expect(
jsx(
'React.createElement(Provider, { __source: { fileName: _jsxFileName, lineNumber: 133 }})'
)
).toMatchInlineSnapshot('"<Provider />;"')
})
})