1 #!/bin/sh
3 test_description="recursive merge corner cases w/ renames but not criss-crosses"
4 # t6036 has corner cases that involve both criss-cross merges and renames
6 . ./test-lib.sh
8 test_expect_success 'setup rename/delete + untracked file' '
9 echo "A pretty inscription" >ring &&
10 git add ring &&
11 test_tick &&
12 git commit -m beginning &&
14 git branch people &&
15 git checkout -b rename-the-ring &&
16 git mv ring one-ring-to-rule-them-all &&
17 test_tick &&
18 git commit -m fullname &&
20 git checkout people &&
21 git rm ring &&
22 echo gollum >owner &&
23 git add owner &&
24 test_tick &&
25 git commit -m track-people-instead-of-objects &&
26 echo "Myyy PRECIOUSSS" >ring
27 '
29 test_expect_failure "Does git preserve Gollum's precious artifact?" '
30 test_must_fail git merge -s recursive rename-the-ring &&
32 # Make sure git did not delete an untracked file
33 test -f ring
34 '
36 # Testcase setup for rename/modify/add-source:
37 # Commit A: new file: a
38 # Commit B: modify a slightly
39 # Commit C: rename a->b, add completely different a
40 #
41 # We should be able to merge B & C cleanly
43 test_expect_success 'setup rename/modify/add-source conflict' '
44 git rm -rf . &&
45 git clean -fdqx &&
46 rm -rf .git &&
47 git init &&
49 printf "1\n2\n3\n4\n5\n6\n7\n" >a &&
50 git add a &&
51 git commit -m A &&
52 git tag A &&
54 git checkout -b B A &&
55 echo 8 >>a &&
56 git add a &&
57 git commit -m B &&
59 git checkout -b C A &&
60 git mv a b &&
61 echo something completely different >a &&
62 git add a &&
63 git commit -m C
64 '
66 test_expect_failure 'rename/modify/add-source conflict resolvable' '
67 git checkout B^0 &&
69 git merge -s recursive C^0 &&
71 test $(git rev-parse B:a) = $(git rev-parse b) &&
72 test $(git rev-parse C:a) = $(git rev-parse a)
73 '
75 test_expect_success 'setup resolvable conflict missed if rename missed' '
76 git rm -rf . &&
77 git clean -fdqx &&
78 rm -rf .git &&
79 git init &&
81 printf "1\n2\n3\n4\n5\n" >a &&
82 echo foo >b &&
83 git add a b &&
84 git commit -m A &&
85 git tag A &&
87 git checkout -b B A &&
88 git mv a c &&
89 echo "Completely different content" >a &&
90 git add a &&
91 git commit -m B &&
93 git checkout -b C A &&
94 echo 6 >>a &&
95 git add a &&
96 git commit -m C
97 '
99 test_expect_failure 'conflict caused if rename not detected' '
100 git checkout -q C^0 &&
101 git merge -s recursive B^0 &&
103 test 3 -eq $(git ls-files -s | wc -l) &&
104 test 0 -eq $(git ls-files -u | wc -l) &&
105 test 0 -eq $(git ls-files -o | wc -l) &&
107 test 6 -eq $(wc -l < c) &&
108 test $(git rev-parse HEAD:a) = $(git rev-parse B:a) &&
109 test $(git rev-parse HEAD:b) = $(git rev-parse A:b)
110 '
112 test_expect_success 'setup conflict resolved wrong if rename missed' '
113 git reset --hard &&
114 git clean -f &&
116 git checkout -b D A &&
117 echo 7 >>a &&
118 git add a &&
119 git mv a c &&
120 echo "Completely different content" >a &&
121 git add a &&
122 git commit -m D &&
124 git checkout -b E A &&
125 git rm a &&
126 echo "Completely different content" >>a &&
127 git add a &&
128 git commit -m E
129 '
131 test_expect_failure 'missed conflict if rename not detected' '
132 git checkout -q E^0 &&
133 test_must_fail git merge -s recursive D^0
134 '
136 # Tests for undetected rename/add-source causing a file to erroneously be
137 # deleted (and for mishandled rename/rename(1to1) causing the same issue).
138 #
139 # This test uses a rename/rename(1to1)+add-source conflict (1to1 means the
140 # same file is renamed on both sides to the same thing; it should trigger
141 # the 1to2 logic, which it would do if the add-source didn't cause issues
142 # for git's rename detection):
143 # Commit A: new file: a
144 # Commit B: rename a->b
145 # Commit C: rename a->b, add unrelated a
147 test_expect_success 'setup undetected rename/add-source causes data loss' '
148 git rm -rf . &&
149 git clean -fdqx &&
150 rm -rf .git &&
151 git init &&
153 printf "1\n2\n3\n4\n5\n" >a &&
154 git add a &&
155 git commit -m A &&
156 git tag A &&
158 git checkout -b B A &&
159 git mv a b &&
160 git commit -m B &&
162 git checkout -b C A &&
163 git mv a b &&
164 echo foobar >a &&
165 git add a &&
166 git commit -m C
167 '
169 test_expect_failure 'detect rename/add-source and preserve all data' '
170 git checkout B^0 &&
172 git merge -s recursive C^0 &&
174 test 2 -eq $(git ls-files -s | wc -l) &&
175 test 2 -eq $(git ls-files -u | wc -l) &&
176 test 0 -eq $(git ls-files -o | wc -l) &&
178 test -f a &&
179 test -f b &&
181 test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
182 test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
183 '
185 test_expect_failure 'detect rename/add-source and preserve all data, merge other way' '
186 git checkout C^0 &&
188 git merge -s recursive B^0 &&
190 test 2 -eq $(git ls-files -s | wc -l) &&
191 test 2 -eq $(git ls-files -u | wc -l) &&
192 test 0 -eq $(git ls-files -o | wc -l) &&
194 test -f a &&
195 test -f b &&
197 test $(git rev-parse HEAD:b) = $(git rev-parse A:a) &&
198 test $(git rev-parse HEAD:a) = $(git rev-parse C:a)
199 '
201 test_done