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1 #!/bin/sh
2 #
3 # Copyright (C) 2018 Antonio Ospite <ao2@ao2.it>
4 #
5
6 test_description='Test reading/writing .gitmodules when not in the working tree
7
8 This test verifies that, when .gitmodules is in the current branch but is not
9 in the working tree reading from it still works but writing to it does not.
10
11 The test setup uses a sparse checkout, however the same scenario can be set up
12 also by committing .gitmodules and then just removing it from the filesystem.
13 '
14
15 . ./test-lib.sh
16
17 test_expect_success 'sparse checkout setup which hides .gitmodules' '
18 git init upstream &&
19 git init submodule &&
20 (cd submodule &&
21 echo file >file &&
22 git add file &&
23 test_tick &&
24 git commit -m "Add file"
25 ) &&
26 (cd upstream &&
27 git submodule add ../submodule &&
28 test_tick &&
29 git commit -m "Add submodule"
30 ) &&
31 git clone upstream super &&
32 (cd super &&
33 cat >.git/info/sparse-checkout <<-\EOF &&
34 /*
35 !/.gitmodules
36 EOF
37 git config core.sparsecheckout true &&
38 git read-tree -m -u HEAD &&
39 test_path_is_missing .gitmodules
40 )
41 '
42
43 test_expect_success 'reading gitmodules config file when it is not checked out' '
44 echo "../submodule" >expect &&
45 git -C super submodule--helper config submodule.submodule.url >actual &&
46 test_cmp expect actual
47 '
48
49 test_expect_success 'not writing gitmodules config file when it is not checked out' '
50 test_must_fail git -C super submodule--helper config submodule.submodule.url newurl &&
51 test_path_is_missing super/.gitmodules
52 '
53
54 test_expect_success 'initialising submodule when the gitmodules config is not checked out' '
55 test_must_fail git -C super config submodule.submodule.url &&
56 git -C super submodule init &&
57 git -C super config submodule.submodule.url >actual &&
58 echo "$(pwd)/submodule" >expect &&
59 test_cmp expect actual
60 '
61
62 test_expect_success 'updating submodule when the gitmodules config is not checked out' '
63 test_path_is_missing super/submodule/file &&
64 git -C super submodule update &&
65 test_cmp submodule/file super/submodule/file
66 '
67
68 ORIG_SUBMODULE=$(git -C submodule rev-parse HEAD)
69 ORIG_UPSTREAM=$(git -C upstream rev-parse HEAD)
70 ORIG_SUPER=$(git -C super rev-parse HEAD)
71
72 test_expect_success 're-updating submodule when the gitmodules config is not checked out' '
73 test_when_finished "git -C submodule reset --hard $ORIG_SUBMODULE;
74 git -C upstream reset --hard $ORIG_UPSTREAM;
75 git -C super reset --hard $ORIG_SUPER;
76 git -C upstream submodule update --remote;
77 git -C super pull;
78 git -C super submodule update --remote" &&
79 (cd submodule &&
80 echo file2 >file2 &&
81 git add file2 &&
82 test_tick &&
83 git commit -m "Add file2 to submodule"
84 ) &&
85 (cd upstream &&
86 git submodule update --remote &&
87 git add submodule &&
88 test_tick &&
89 git commit -m "Update submodule"
90 ) &&
91 git -C super pull &&
92 # The --for-status options reads the gitmodules config
93 git -C super submodule summary --for-status >actual &&
94 rev1=$(git -C submodule rev-parse --short HEAD) &&
95 rev2=$(git -C submodule rev-parse --short HEAD^) &&
96 cat >expect <<-EOF &&
97 * submodule ${rev1}...${rev2} (1):
98 < Add file2 to submodule
99
100 EOF
101 test_cmp expect actual &&
102 # Test that the update actually succeeds
103 test_path_is_missing super/submodule/file2 &&
104 git -C super submodule update &&
105 test_cmp submodule/file2 super/submodule/file2 &&
106 git -C super status --short >output &&
107 test_must_be_empty output
108 '
109
110 test_expect_success 'not adding submodules when the gitmodules config is not checked out' '
111 git clone submodule new_submodule &&
112 test_must_fail git -C super submodule add ../new_submodule &&
113 test_path_is_missing .gitmodules
114 '
115
116 # This test checks that the previous "git submodule add" did not leave the
117 # repository in a spurious state when it failed.
118 test_expect_success 'init submodule still works even after the previous add failed' '
119 git -C super submodule init
120 '
121
122 test_done