-
Notifications
You must be signed in to change notification settings - Fork 227
/
prefer-spy-on.test.ts
143 lines (141 loc) · 3.96 KB
/
prefer-spy-on.test.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
133
134
135
136
137
138
139
140
141
142
143
import { AST_NODE_TYPES, TSESLint } from '@typescript-eslint/utils';
import rule from '../prefer-spy-on';
import { espreeParser } from './test-utils';
const ruleTester = new TSESLint.RuleTester({
parser: espreeParser,
parserOptions: {
ecmaVersion: 2015,
},
});
ruleTester.run('prefer-spy-on', rule, {
valid: [
'Date.now = () => 10',
'window.fetch = jest.fn',
'Date.now = fn()',
'obj.mock = jest.something()',
'const mock = jest.fn()',
'mock = jest.fn()',
'const mockObj = { mock: jest.fn() }',
'mockObj = { mock: jest.fn() }',
'window[`${name}`] = jest[`fn${expression}`]()',
],
invalid: [
{
code: 'obj.a = jest.fn(); const test = 10;',
output: "jest.spyOn(obj, 'a').mockImplementation(); const test = 10;",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: "Date['now'] = jest['fn']()",
output: "jest.spyOn(Date, 'now').mockImplementation()",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: 'window[`${name}`] = jest[`fn`]()',
output: 'jest.spyOn(window, `${name}`).mockImplementation()',
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: "obj['prop' + 1] = jest['fn']()",
output: "jest.spyOn(obj, 'prop' + 1).mockImplementation()",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: 'obj.one.two = jest.fn(); const test = 10;',
output:
"jest.spyOn(obj.one, 'two').mockImplementation(); const test = 10;",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: 'obj.a = jest.fn(() => 10,)',
output: "jest.spyOn(obj, 'a').mockImplementation(() => 10)",
parserOptions: { ecmaVersion: 2017 },
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: "obj.a.b = jest.fn(() => ({})).mockReturnValue('default').mockReturnValueOnce('first call'); test();",
output:
"jest.spyOn(obj.a, 'b').mockImplementation(() => ({})).mockReturnValue('default').mockReturnValueOnce('first call'); test();",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
code: 'window.fetch = jest.fn(() => ({})).one.two().three().four',
output:
"jest.spyOn(window, 'fetch').mockImplementation(() => ({})).one.two().three().four",
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
// https://github.com/jest-community/eslint-plugin-jest/issues/1304
code: 'foo[bar] = jest.fn().mockReturnValue(undefined)',
output:
'jest.spyOn(foo, bar).mockImplementation().mockReturnValue(undefined)',
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
{
// https://github.com/jest-community/eslint-plugin-jest/issues/1307
code: `
foo.bar = jest.fn().mockImplementation(baz => baz)
foo.bar = jest.fn(a => b).mockImplementation(baz => baz)
`,
output: `
jest.spyOn(foo, 'bar').mockImplementation(baz => baz)
jest.spyOn(foo, 'bar').mockImplementation(baz => baz)
`,
errors: [
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
{
messageId: 'useJestSpyOn',
type: AST_NODE_TYPES.AssignmentExpression,
},
],
},
],
});