1 #!/bin/sh
3 test_description='checkout into detached HEAD state'
4 . ./test-lib.sh
6 check_detached () {
7 test_must_fail git symbolic-ref -q HEAD >/dev/null
8 }
10 check_not_detached () {
11 git symbolic-ref -q HEAD >/dev/null
12 }
14 ORPHAN_WARNING='you are leaving .* commit.*behind'
15 check_orphan_warning() {
16 test_i18ngrep "$ORPHAN_WARNING" "$1"
17 }
18 check_no_orphan_warning() {
19 test_i18ngrep ! "$ORPHAN_WARNING" "$1"
20 }
22 reset () {
23 git checkout master &&
24 check_not_detached
25 }
27 test_expect_success 'setup' '
28 test_commit one &&
29 test_commit two &&
30 test_commit three && git tag -d three &&
31 test_commit four && git tag -d four &&
32 git branch branch &&
33 git tag tag
34 '
36 test_expect_success 'checkout branch does not detach' '
37 reset &&
38 git checkout branch &&
39 check_not_detached
40 '
42 test_expect_success 'checkout tag detaches' '
43 reset &&
44 git checkout tag &&
45 check_detached
46 '
48 test_expect_success 'checkout branch by full name detaches' '
49 reset &&
50 git checkout refs/heads/branch &&
51 check_detached
52 '
54 test_expect_success 'checkout non-ref detaches' '
55 reset &&
56 git checkout branch^ &&
57 check_detached
58 '
60 test_expect_success 'checkout ref^0 detaches' '
61 reset &&
62 git checkout branch^0 &&
63 check_detached
64 '
66 test_expect_success 'checkout --detach detaches' '
67 reset &&
68 git checkout --detach branch &&
69 check_detached
70 '
72 test_expect_success 'checkout --detach without branch name' '
73 reset &&
74 git checkout --detach &&
75 check_detached
76 '
78 test_expect_success 'checkout --detach errors out for non-commit' '
79 reset &&
80 test_must_fail git checkout --detach one^{tree} &&
81 check_not_detached
82 '
84 test_expect_success 'checkout --detach errors out for extra argument' '
85 reset &&
86 git checkout master &&
87 test_must_fail git checkout --detach tag one.t &&
88 check_not_detached
89 '
91 test_expect_success 'checkout --detached and -b are incompatible' '
92 reset &&
93 test_must_fail git checkout --detach -b newbranch tag &&
94 check_not_detached
95 '
97 test_expect_success 'checkout --detach moves HEAD' '
98 reset &&
99 git checkout one &&
100 git checkout --detach two &&
101 git diff --exit-code HEAD &&
102 git diff --exit-code two
103 '
105 test_expect_success 'checkout warns on orphan commits' '
106 reset &&
107 git checkout --detach two &&
108 echo content >orphan &&
109 git add orphan &&
110 git commit -a -m orphan &&
111 git checkout master 2>stderr
112 '
114 test_expect_success 'checkout warns on orphan commits: output' '
115 check_orphan_warning stderr
116 '
118 test_expect_success 'checkout does not warn leaving ref tip' '
119 reset &&
120 git checkout --detach two &&
121 git checkout master 2>stderr
122 '
124 test_expect_success 'checkout does not warn leaving ref tip' '
125 check_no_orphan_warning stderr
126 '
128 test_expect_success 'checkout does not warn leaving reachable commit' '
129 reset &&
130 git checkout --detach HEAD^ &&
131 git checkout master 2>stderr
132 '
134 test_expect_success 'checkout does not warn leaving reachable commit' '
135 check_no_orphan_warning stderr
136 '
138 cat >expect <<'EOF'
139 Your branch is behind 'master' by 1 commit, and can be fast-forwarded.
140 EOF
141 test_expect_success 'tracking count is accurate after orphan check' '
142 reset &&
143 git branch child master^ &&
144 git config branch.child.remote . &&
145 git config branch.child.merge refs/heads/master &&
146 git checkout child^ &&
147 git checkout child >stdout &&
148 test_cmp expect stdout
149 '
151 test_done