1#!/bin/sh
2#
3# Copyright (c) 2010 Erick Mattos
4#
5
6test_description='git checkout --orphan
7
8Main Tests for --orphan functionality.'
9
10GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
11export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
12
13. ./test-lib.sh
14
15TEST_FILE=foo
16
17test_expect_success 'Setup' '
18	echo "Initial" >"$TEST_FILE" &&
19	git add "$TEST_FILE" &&
20	git commit -m "First Commit" &&
21	test_tick &&
22	echo "State 1" >>"$TEST_FILE" &&
23	git add "$TEST_FILE" &&
24	test_tick &&
25	git commit -m "Second Commit"
26'
27
28test_expect_success '--orphan creates a new orphan branch from HEAD' '
29	git checkout --orphan alpha &&
30	test_must_fail git rev-parse --verify HEAD &&
31	test "refs/heads/alpha" = "$(git symbolic-ref HEAD)" &&
32	test_tick &&
33	git commit -m "Third Commit" &&
34	test_must_fail git rev-parse --verify HEAD^ &&
35	git diff-tree --quiet main alpha
36'
37
38test_expect_success '--orphan creates a new orphan branch from <start_point>' '
39	git checkout main &&
40	git checkout --orphan beta main^ &&
41	test_must_fail git rev-parse --verify HEAD &&
42	test "refs/heads/beta" = "$(git symbolic-ref HEAD)" &&
43	test_tick &&
44	git commit -m "Fourth Commit" &&
45	test_must_fail git rev-parse --verify HEAD^ &&
46	git diff-tree --quiet main^ beta
47'
48
49test_expect_success '--orphan must be rejected with -b' '
50	git checkout main &&
51	test_must_fail git checkout --orphan new -b newer &&
52	test refs/heads/main = "$(git symbolic-ref HEAD)"
53'
54
55test_expect_success '--orphan must be rejected with -t' '
56	git checkout main &&
57	test_must_fail git checkout --orphan new -t main &&
58	test refs/heads/main = "$(git symbolic-ref HEAD)"
59'
60
61test_expect_success '--orphan ignores branch.autosetupmerge' '
62	git checkout main &&
63	git config branch.autosetupmerge always &&
64	git checkout --orphan gamma &&
65	test -z "$(git config branch.gamma.merge)" &&
66	test refs/heads/gamma = "$(git symbolic-ref HEAD)" &&
67	test_must_fail git rev-parse --verify HEAD^
68'
69
70test_expect_success '--orphan makes reflog by default' '
71	git checkout main &&
72	git config --unset core.logAllRefUpdates &&
73	git checkout --orphan delta &&
74	test_must_fail git rev-parse --verify delta@{0} &&
75	git commit -m Delta &&
76	git rev-parse --verify delta@{0}
77'
78
79test_expect_success REFFILES '--orphan does not make reflog when core.logAllRefUpdates = false' '
80	git checkout main &&
81	git config core.logAllRefUpdates false &&
82	git checkout --orphan epsilon &&
83	test_must_fail git rev-parse --verify epsilon@{0} &&
84	git commit -m Epsilon &&
85	test_must_fail git rev-parse --verify epsilon@{0}
86'
87
88test_expect_success '--orphan with -l makes reflog when core.logAllRefUpdates = false' '
89	git checkout main &&
90	git checkout -l --orphan zeta &&
91	test_must_fail git rev-parse --verify zeta@{0} &&
92	git commit -m Zeta &&
93	git rev-parse --verify zeta@{0}
94'
95
96test_expect_success 'giving up --orphan not committed when -l and core.logAllRefUpdates = false deletes reflog' '
97	git checkout main &&
98	git checkout -l --orphan eta &&
99	test_must_fail git rev-parse --verify eta@{0} &&
100	git checkout main &&
101	test_must_fail git rev-parse --verify eta@{0}
102'
103
104test_expect_success '--orphan is rejected with an existing name' '
105	git checkout main &&
106	test_must_fail git checkout --orphan main &&
107	test refs/heads/main = "$(git symbolic-ref HEAD)"
108'
109
110test_expect_success '--orphan refuses to switch if a merge is needed' '
111	git checkout main &&
112	git reset --hard &&
113	echo local >>"$TEST_FILE" &&
114	cat "$TEST_FILE" >"$TEST_FILE.saved" &&
115	test_must_fail git checkout --orphan new main^ &&
116	test refs/heads/main = "$(git symbolic-ref HEAD)" &&
117	test_cmp "$TEST_FILE" "$TEST_FILE.saved" &&
118	git diff-index --quiet --cached HEAD &&
119	git reset --hard
120'
121
122test_expect_success 'cannot --detach on an unborn branch' '
123	git checkout main &&
124	git checkout --orphan new &&
125	test_must_fail git checkout --detach
126'
127
128test_done
129