forked from eslint/eslint
/
no-multiple-empty-lines.js
284 lines (269 loc) · 9.19 KB
/
no-multiple-empty-lines.js
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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
/**
* @fileoverview Disallows multiple blank lines.
* @author Greg Cochard
*/
"use strict";
//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------
var rule = require("../../../lib/rules/no-multiple-empty-lines"),
RuleTester = require("../../../lib/testers/rule-tester");
//------------------------------------------------------------------------------
// Tests
//------------------------------------------------------------------------------
var ruleTester = new RuleTester();
/**
* Creates the expected error message object for the specified number of lines
* @param {lines} lines - The number of lines expected.
* @returns {object} the expected error message object
* @private
*/
function getExpectedError(lines) {
var message = lines === 1
? "More than 1 blank line not allowed."
: "More than " + lines + " blank lines not allowed.";
return {
message: message,
type: "Program"
};
}
/**
* Creates the expected error message object for the specified number of lines
* @param {lines} lines - The number of lines expected.
* @returns {object} the expected error message object
* @private
*/
function getExpectedErrorEOF(lines) {
if (typeof lines !== "number") {
lines = 0;
}
return {
message: "Too many blank lines at the end of file. Max of " + lines + " allowed.",
type: "Program"
};
}
/**
* Creates the expected error message object for the specified number of lines
* @param {lines} lines - The number of lines expected.
* @returns {object} the expected error message object
* @private
*/
function getExpectedErrorBOF(lines) {
if (typeof lines !== "number") {
lines = 0;
}
return {
message: "Too many blank lines at the beginning of file. Max of " + lines + " allowed.",
type: "Program"
};
}
ruleTester.run("no-multiple-empty-lines", rule, {
valid: [
{
code: "// valid 1\nvar a = 5;\nvar b = 3;\n\n",
options: [ { max: 1 } ]
},
{
code: "// valid 2\n\nvar a = 5;\n\nvar b = 3;",
options: [ { max: 1 } ]
},
{
code: "// valid 3\nvar a = 5;\n\nvar b = 3;\n\n\n",
options: [ { max: 2 } ]
},
{
code: "// valid 4\nvar a = 5,\n b = 3;",
options: [ { max: 2 } ]
},
{
code: "// valid 5\nvar a = 5;\n\n\n\n\nvar b = 3;\n\n\n\n\n",
options: [ { max: 4 } ]
},
{
code: "// valid 6\nvar a = 5;\n/* comment */\nvar b = 5;",
options: [ { max: 0 } ]
},
{
code: "// valid 7\nvar a = 5;\n",
options: [ { max: 0 } ]
},
{
code: "// valid 8\nvar a = 5;\n",
options: [ { max: 0, maxEOF: 0 } ]
},
{
code: "// valid 9\nvar a = 1;\n\n",
options: [{ max: 2, maxEOF: 1 }]
},
{
code: "// valid 10\nvar a = 5;\n",
options: [ { max: 0, maxBOF: 0 } ]
},
{
code: "\n// valid 11\nvar a = 1;\n",
options: [{ max: 2, maxBOF: 1 }]
},
{
code: "// valid 12\r\n// windows line endings\r\nvar a = 5;\r\nvar b = 3;\r\n\r\n",
options: [ { max: 1 } ]
},
// template strings
{
code: "// valid 12\nx = `\n\n\n\nhi\n\n\n\n`",
options: [ { max: 2 } ],
parserOptions: { ecmaVersion: 6 }
},
{
code: "// valid 13\n`\n\n`",
options: [ { max: 0 } ],
parserOptions: { ecmaVersion: 6 }
},
{
code: "// valid 14\nvar a = 5;`\n\n\n\n\n`",
options: [ { max: 0, maxEOF: 0 } ],
parserOptions: { ecmaVersion: 6 }
},
{
code: "`\n\n\n\n\n`\n// valid 15\nvar a = 5;",
options: [ { max: 0, maxBOF: 0 } ],
parserOptions: { ecmaVersion: 6 }
},
{
code: "\n\n\n\n// valid 16\nvar a = 5;\n",
options: [ { max: 0, maxBOF: 4 } ]
},
{
code: "// valid 17\nvar a = 5;\n\n",
options: [ { max: 0, maxEOF: 1 } ]
}
],
invalid: [
{
code: "// invalid 1\nvar a = 5;\n\n\nvar b = 3;",
output: "// invalid 1\nvar a = 5;\n\nvar b = 3;",
errors: [ getExpectedError(1) ],
options: [ { max: 1 } ]
},
{
code: "// invalid 2\n\n\n\n\nvar a = 5;",
output: "// invalid 2\n\n\nvar a = 5;",
errors: [ getExpectedError(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 3\nvar a = 5;\n\n\n\n",
output: "// invalid 3\nvar a = 5;\n\n\n",
errors: [ getExpectedErrorEOF(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 4\nvar a = 5;\n \n \n \n",
output: "// invalid 4\nvar a = 5;\n \n \n",
errors: [ getExpectedErrorEOF(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 5\nvar a=5;\n\n\n\nvar b = 3;",
output: "// invalid 5\nvar a=5;\n\n\nvar b = 3;",
errors: [ getExpectedError(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 6\nvar a=5;\n\n\n\nvar b = 3;\n",
output: "// invalid 6\nvar a=5;\n\n\nvar b = 3;\n",
errors: [ getExpectedError(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 7\nvar a = 5;\n\n\n\nb = 3;\nvar c = 5;\n\n\n\nvar d = 3;",
output: "// invalid 7\nvar a = 5;\n\n\nb = 3;\nvar c = 5;\n\n\nvar d = 3;",
errors: 2,
options: [ { max: 2 } ]
},
{
code: "// invalid 8\nvar a = 5;\n\n\n\n\n\n\n\n\n\n\n\n\n\nb = 3;",
output: "// invalid 8\nvar a = 5;\n\n\nb = 3;",
errors: [ getExpectedError(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 9\nvar a=5;\n\n\n\n\n",
output: "// invalid 9\nvar a=5;\n\n\n",
errors: [ getExpectedErrorEOF(2) ],
options: [ { max: 2 } ]
},
{
code: "// invalid 10\nvar a = 5;\n\nvar b = 3;",
output: "// invalid 10\nvar a = 5;\nvar b = 3;",
errors: [ getExpectedError(0) ],
options: [ { max: 0 } ]
},
{
code: "// invalid 11\nvar a = 5;\n\n\n",
output: "// invalid 11\nvar a = 5;\n\n",
errors: [ getExpectedErrorEOF(1) ],
options: [ { max: 5, maxEOF: 1 } ]
},
{
code: "// invalid 12\nvar a = 5;\n\n\n\n\n\n",
output: "// invalid 12\nvar a = 5;\n\n\n\n\n",
errors: [ getExpectedErrorEOF(4) ],
options: [ { max: 0, maxEOF: 4 } ]
},
{
code: "// invalid 13\n\n\n\n\n\n\n\n\nvar a = 5;\n\n\n",
output: "// invalid 13\n\n\n\n\n\n\n\n\nvar a = 5;\n\n",
errors: [ getExpectedErrorEOF(1) ],
options: [ { max: 10, maxEOF: 1 } ]
},
{
code: "// invalid 14\nvar a = 5;\n\n",
output: "// invalid 14\nvar a = 5;\n",
errors: [ getExpectedErrorEOF(0) ],
options: [ { max: 2, maxEOF: 0 } ]
},
{
code: "\n\n// invalid 15\nvar a = 5;\n",
output: "\n// invalid 15\nvar a = 5;\n",
errors: [ getExpectedErrorBOF(1) ],
options: [ { max: 5, maxBOF: 1 } ]
},
{
code: "\n\n\n\n\n// invalid 16\nvar a = 5;\n",
output: "\n\n\n\n// invalid 16\nvar a = 5;\n",
errors: [ getExpectedErrorBOF(4)],
options: [ { max: 0, maxBOF: 4 } ]
},
{
code: "\n\n// invalid 17\n\n\n\n\n\n\n\n\nvar a = 5;\n",
output: "\n// invalid 17\n\n\n\n\n\n\n\n\nvar a = 5;\n",
errors: [ getExpectedErrorBOF(1) ],
options: [ { max: 10, maxBOF: 1 } ]
},
{
code: "\n// invalid 18\nvar a = 5;\n",
output: "// invalid 18\nvar a = 5;\n",
errors: [ getExpectedErrorBOF(0) ],
options: [ { max: 2, maxBOF: 0 } ]
},
{
code: "\n\n\n// invalid 19\nvar a = 5;\n\n",
output: "// invalid 19\nvar a = 5;\n",
errors: [ getExpectedErrorBOF(0),
getExpectedErrorEOF(0) ],
options: [ { max: 2, maxBOF: 0, maxEOF: 0 } ]
},
{
code: "// invalid 20\r\n// windows line endings\r\nvar a = 5;\r\nvar b = 3;\r\n\r\n\r\n",
output: "// invalid 20\r\n// windows line endings\r\nvar a = 5;\r\nvar b = 3;\r\n\r\n",
errors: [ getExpectedErrorEOF(1) ],
options: [ { max: 1 } ]
},
{
code: "// invalid 21\n// unix line endings\nvar a = 5;\nvar b = 3;\n\n\n",
output: "// invalid 21\n// unix line endings\nvar a = 5;\nvar b = 3;\n\n",
errors: [ getExpectedErrorEOF(1) ],
options: [ { max: 1 } ]
}
]
});