Source file
src/cmd/fix/import_test.go
Documentation: cmd/fix
1
2
3
4
5 package main
6
7 import "go/ast"
8
9 func init() {
10 addTestCases(importTests, nil)
11 }
12
13 var importTests = []testCase{
14 {
15 Name: "import.0",
16 Fn: addImportFn("os"),
17 In: `package main
18
19 import (
20 "os"
21 )
22 `,
23 Out: `package main
24
25 import (
26 "os"
27 )
28 `,
29 },
30 {
31 Name: "import.1",
32 Fn: addImportFn("os"),
33 In: `package main
34 `,
35 Out: `package main
36
37 import "os"
38 `,
39 },
40 {
41 Name: "import.2",
42 Fn: addImportFn("os"),
43 In: `package main
44
45 // Comment
46 import "C"
47 `,
48 Out: `package main
49
50 // Comment
51 import "C"
52 import "os"
53 `,
54 },
55 {
56 Name: "import.3",
57 Fn: addImportFn("os"),
58 In: `package main
59
60 // Comment
61 import "C"
62
63 import (
64 "io"
65 "utf8"
66 )
67 `,
68 Out: `package main
69
70 // Comment
71 import "C"
72
73 import (
74 "io"
75 "os"
76 "utf8"
77 )
78 `,
79 },
80 {
81 Name: "import.4",
82 Fn: deleteImportFn("os"),
83 In: `package main
84
85 import (
86 "os"
87 )
88 `,
89 Out: `package main
90 `,
91 },
92 {
93 Name: "import.5",
94 Fn: deleteImportFn("os"),
95 In: `package main
96
97 // Comment
98 import "C"
99 import "os"
100 `,
101 Out: `package main
102
103 // Comment
104 import "C"
105 `,
106 },
107 {
108 Name: "import.6",
109 Fn: deleteImportFn("os"),
110 In: `package main
111
112 // Comment
113 import "C"
114
115 import (
116 "io"
117 "os"
118 "utf8"
119 )
120 `,
121 Out: `package main
122
123 // Comment
124 import "C"
125
126 import (
127 "io"
128 "utf8"
129 )
130 `,
131 },
132 {
133 Name: "import.7",
134 Fn: deleteImportFn("io"),
135 In: `package main
136
137 import (
138 "io" // a
139 "os" // b
140 "utf8" // c
141 )
142 `,
143 Out: `package main
144
145 import (
146 // a
147 "os" // b
148 "utf8" // c
149 )
150 `,
151 },
152 {
153 Name: "import.8",
154 Fn: deleteImportFn("os"),
155 In: `package main
156
157 import (
158 "io" // a
159 "os" // b
160 "utf8" // c
161 )
162 `,
163 Out: `package main
164
165 import (
166 "io" // a
167 // b
168 "utf8" // c
169 )
170 `,
171 },
172 {
173 Name: "import.9",
174 Fn: deleteImportFn("utf8"),
175 In: `package main
176
177 import (
178 "io" // a
179 "os" // b
180 "utf8" // c
181 )
182 `,
183 Out: `package main
184
185 import (
186 "io" // a
187 "os" // b
188 // c
189 )
190 `,
191 },
192 {
193 Name: "import.10",
194 Fn: deleteImportFn("io"),
195 In: `package main
196
197 import (
198 "io"
199 "os"
200 "utf8"
201 )
202 `,
203 Out: `package main
204
205 import (
206 "os"
207 "utf8"
208 )
209 `,
210 },
211 {
212 Name: "import.11",
213 Fn: deleteImportFn("os"),
214 In: `package main
215
216 import (
217 "io"
218 "os"
219 "utf8"
220 )
221 `,
222 Out: `package main
223
224 import (
225 "io"
226 "utf8"
227 )
228 `,
229 },
230 {
231 Name: "import.12",
232 Fn: deleteImportFn("utf8"),
233 In: `package main
234
235 import (
236 "io"
237 "os"
238 "utf8"
239 )
240 `,
241 Out: `package main
242
243 import (
244 "io"
245 "os"
246 )
247 `,
248 },
249 {
250 Name: "import.13",
251 Fn: rewriteImportFn("utf8", "encoding/utf8"),
252 In: `package main
253
254 import (
255 "io"
256 "os"
257 "utf8" // thanks ken
258 )
259 `,
260 Out: `package main
261
262 import (
263 "encoding/utf8" // thanks ken
264 "io"
265 "os"
266 )
267 `,
268 },
269 {
270 Name: "import.14",
271 Fn: rewriteImportFn("asn1", "encoding/asn1"),
272 In: `package main
273
274 import (
275 "asn1"
276 "crypto"
277 "crypto/rsa"
278 _ "crypto/sha1"
279 "crypto/x509"
280 "crypto/x509/pkix"
281 "time"
282 )
283
284 var x = 1
285 `,
286 Out: `package main
287
288 import (
289 "crypto"
290 "crypto/rsa"
291 _ "crypto/sha1"
292 "crypto/x509"
293 "crypto/x509/pkix"
294 "encoding/asn1"
295 "time"
296 )
297
298 var x = 1
299 `,
300 },
301 {
302 Name: "import.15",
303 Fn: rewriteImportFn("url", "net/url"),
304 In: `package main
305
306 import (
307 "bufio"
308 "net"
309 "path"
310 "url"
311 )
312
313 var x = 1 // comment on x, not on url
314 `,
315 Out: `package main
316
317 import (
318 "bufio"
319 "net"
320 "net/url"
321 "path"
322 )
323
324 var x = 1 // comment on x, not on url
325 `,
326 },
327 {
328 Name: "import.16",
329 Fn: rewriteImportFn("http", "net/http", "template", "text/template"),
330 In: `package main
331
332 import (
333 "flag"
334 "http"
335 "log"
336 "template"
337 )
338
339 var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
340 `,
341 Out: `package main
342
343 import (
344 "flag"
345 "log"
346 "net/http"
347 "text/template"
348 )
349
350 var addr = flag.String("addr", ":1718", "http service address") // Q=17, R=18
351 `,
352 },
353 {
354 Name: "import.17",
355 Fn: addImportFn("x/y/z", "x/a/c"),
356 In: `package main
357
358 // Comment
359 import "C"
360
361 import (
362 "a"
363 "b"
364
365 "x/w"
366
367 "d/f"
368 )
369 `,
370 Out: `package main
371
372 // Comment
373 import "C"
374
375 import (
376 "a"
377 "b"
378
379 "x/a/c"
380 "x/w"
381 "x/y/z"
382
383 "d/f"
384 )
385 `,
386 },
387 {
388 Name: "import.18",
389 Fn: addDelImportFn("e", "o"),
390 In: `package main
391
392 import (
393 "f"
394 "o"
395 "z"
396 )
397 `,
398 Out: `package main
399
400 import (
401 "e"
402 "f"
403 "z"
404 )
405 `,
406 },
407 }
408
409 func addImportFn(path ...string) func(*ast.File) bool {
410 return func(f *ast.File) bool {
411 fixed := false
412 for _, p := range path {
413 if !imports(f, p) {
414 addImport(f, p)
415 fixed = true
416 }
417 }
418 return fixed
419 }
420 }
421
422 func deleteImportFn(path string) func(*ast.File) bool {
423 return func(f *ast.File) bool {
424 if imports(f, path) {
425 deleteImport(f, path)
426 return true
427 }
428 return false
429 }
430 }
431
432 func addDelImportFn(p1 string, p2 string) func(*ast.File) bool {
433 return func(f *ast.File) bool {
434 fixed := false
435 if !imports(f, p1) {
436 addImport(f, p1)
437 fixed = true
438 }
439 if imports(f, p2) {
440 deleteImport(f, p2)
441 fixed = true
442 }
443 return fixed
444 }
445 }
446
447 func rewriteImportFn(oldnew ...string) func(*ast.File) bool {
448 return func(f *ast.File) bool {
449 fixed := false
450 for i := 0; i < len(oldnew); i += 2 {
451 if imports(f, oldnew[i]) {
452 rewriteImport(f, oldnew[i], oldnew[i+1])
453 fixed = true
454 }
455 }
456 return fixed
457 }
458 }
459
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