summaryrefslogtreecommitdiff
path: root/t/t1001-read-tree-m-2way.sh
blob: 030226bbfbd764a21aa59577b365868237d4f40b (plain)
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
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#

test_description='Two way merge with read-tree -m $H $M

This test tries two-way merge (aka fast forward with carry forward).

There is the head (called H) and another commit (called M), which is
simply ahead of H.  The index and the work tree contains a state that
is derived from H, but may also have local changes.  This test checks
all the combinations described in the two-tree merge "carry forward"
rules, found in <Documentation/git-read-tree.txt>.

In the test, these paths are used:
        bozbar  - in H, stays in M, modified from bozbar to gnusto
        frotz   - not in H added in M
        nitfol  - in H, stays in M unmodified
        rezrov  - in H, deleted in M
        yomin   - not in H nor M
'
. ./test-lib.sh

read_tree_twoway () {
    git-read-tree -m "$1" "$2" && git-ls-files --stage
}

_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
compare_change () {
	sed -n >current \
	    -e '/^--- /d; /^+++ /d; /^@@ /d;' \
	    -e 's/^\([-+][0-7][0-7][0-7][0-7][0-7][0-7]\) '"$_x40"' /\1 X /p' \
	    "$1"
	git diff expected current
}

check_cache_at () {
	clean_if_empty=`git-diff-files -- "$1"`
	case "$clean_if_empty" in
	'')  echo "$1: clean" ;;
	?*)  echo "$1: dirty" ;;
	esac
	case "$2,$clean_if_empty" in
	clean,)		:     ;;
	clean,?*)	false ;;
	dirty,)		false ;;
	dirty,?*)	:     ;;
	esac
}

cat >bozbar-old <<\EOF
This is a sample file used in two-way fast forward merge
tests.  Its second line ends with a magic word bozbar
which will be modified by the merged head to gnusto.
It has some extra lines so that external tools can
successfully merge independent changes made to later
lines (such as this one), avoiding line conflicts.
EOF

sed -e 's/bozbar/gnusto (earlier bozbar)/' bozbar-old >bozbar-new

test_expect_success \
    setup \
    'echo frotz >frotz &&
     echo nitfol >nitfol &&
     cat bozbar-old >bozbar &&
     echo rezrov >rezrov &&
     echo yomin >yomin &&
     git-update-index --add nitfol bozbar rezrov &&
     treeH=`git-write-tree` &&
     echo treeH $treeH &&
     git-ls-tree $treeH &&

     cat bozbar-new >bozbar &&
     git-update-index --add frotz bozbar --force-remove rezrov &&
     git-ls-files --stage >M.out &&
     treeM=`git-write-tree` &&
     echo treeM $treeM &&
     git-ls-tree $treeM &&
     git-diff-tree $treeH $treeM'

test_expect_success \
    '1, 2, 3 - no carry forward' \
    'rm -f .git/index &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >1-3.out &&
     git diff M.out 1-3.out &&
     check_cache_at bozbar dirty &&
     check_cache_at frotz dirty &&
     check_cache_at nitfol dirty'

echo '+100644 X 0	yomin' >expected

test_expect_success \
    '4 - carry forward local addition.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     git-update-index --add yomin &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >4.out || return 1
     git diff M.out 4.out >4diff.out
     compare_change 4diff.out expected &&
     check_cache_at yomin clean'

test_expect_success \
    '5 - carry forward local addition.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo yomin >yomin &&
     git-update-index --add yomin &&
     echo yomin yomin >yomin &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >5.out || return 1
     git diff M.out 5.out >5diff.out
     compare_change 5diff.out expected &&
     check_cache_at yomin dirty'

test_expect_success \
    '6 - local addition already has the same.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     git-update-index --add frotz &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >6.out &&
     git diff M.out 6.out &&
     check_cache_at frotz clean'

test_expect_success \
    '7 - local addition already has the same.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo frotz >frotz &&
     git-update-index --add frotz &&
     echo frotz frotz >frotz &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >7.out &&
     git diff M.out 7.out &&
     check_cache_at frotz dirty'

test_expect_success \
    '8 - conflicting addition.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo frotz frotz >frotz &&
     git-update-index --add frotz &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '9 - conflicting addition.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo frotz frotz >frotz &&
     git-update-index --add frotz &&
     echo frotz >frotz &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '10 - path removed.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo rezrov >rezrov &&
     git-update-index --add rezrov &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >10.out &&
     git diff M.out 10.out'

test_expect_success \
    '11 - dirty path removed.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo rezrov >rezrov &&
     git-update-index --add rezrov &&
     echo rezrov rezrov >rezrov &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '12 - unmatching local changes being removed.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo rezrov rezrov >rezrov &&
     git-update-index --add rezrov &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '13 - unmatching local changes being removed.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo rezrov rezrov >rezrov &&
     git-update-index --add rezrov &&
     echo rezrov >rezrov &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

cat >expected <<EOF
-100644 X 0	nitfol
+100644 X 0	nitfol
EOF

test_expect_success \
    '14 - unchanged in two heads.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo nitfol nitfol >nitfol &&
     git-update-index --add nitfol &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >14.out || return 1
     git diff M.out 14.out >14diff.out
     compare_change 14diff.out expected &&
     check_cache_at nitfol clean'

test_expect_success \
    '15 - unchanged in two heads.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo nitfol nitfol >nitfol &&
     git-update-index --add nitfol &&
     echo nitfol nitfol nitfol >nitfol &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >15.out || return 1
     git diff M.out 15.out >15diff.out
     compare_change 15diff.out expected &&
     check_cache_at nitfol dirty'

test_expect_success \
    '16 - conflicting local change.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo bozbar bozbar >bozbar &&
     git-update-index --add bozbar &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '17 - conflicting local change.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     echo bozbar bozbar >bozbar &&
     git-update-index --add bozbar &&
     echo bozbar bozbar bozbar >bozbar &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

test_expect_success \
    '18 - local change already having a good result.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     cat bozbar-new >bozbar &&
     git-update-index --add bozbar &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >18.out &&
     git diff M.out 18.out &&
     check_cache_at bozbar clean'

test_expect_success \
    '19 - local change already having a good result, further modified.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     cat bozbar-new >bozbar &&
     git-update-index --add bozbar &&
     echo gnusto gnusto >bozbar &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >19.out &&
     git diff M.out 19.out &&
     check_cache_at bozbar dirty'

test_expect_success \
    '20 - no local change, use new tree.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     cat bozbar-old >bozbar &&
     git-update-index --add bozbar &&
     read_tree_twoway $treeH $treeM &&
     git-ls-files --stage >20.out &&
     git diff M.out 20.out &&
     check_cache_at bozbar dirty'

test_expect_success \
    '21 - no local change, dirty cache.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     cat bozbar-old >bozbar &&
     git-update-index --add bozbar &&
     echo gnusto gnusto >bozbar &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

# This fails with straight two-way fast forward.
test_expect_success \
    '22 - local change cache updated.' \
    'rm -f .git/index &&
     git-read-tree $treeH &&
     git-checkout-index -u -f -q -a &&
     sed -e "s/such as/SUCH AS/" bozbar-old >bozbar &&
     git-update-index --add bozbar &&
     if read_tree_twoway $treeH $treeM; then false; else :; fi'

# Also make sure we did not break DF vs DF/DF case.
test_expect_success \
    'DF vs DF/DF case setup.' \
    'rm -f .git/index &&
     echo DF >DF &&
     git-update-index --add DF &&
     treeDF=`git-write-tree` &&
     echo treeDF $treeDF &&
     git-ls-tree $treeDF &&

     rm -f DF &&
     mkdir DF &&
     echo DF/DF >DF/DF &&
     git-update-index --add --remove DF DF/DF &&
     treeDFDF=`git-write-tree` &&
     echo treeDFDF $treeDFDF &&
     git-ls-tree $treeDFDF &&
     git-ls-files --stage >DFDF.out'

test_expect_success \
    'DF vs DF/DF case test.' \
    'rm -f .git/index &&
     rm -fr DF &&
     echo DF >DF &&
     git-update-index --add DF &&
     read_tree_twoway $treeDF $treeDFDF &&
     git-ls-files --stage >DFDFcheck.out &&
     git diff DFDF.out DFDFcheck.out &&
     check_cache_at DF/DF dirty &&
     :'

test_done