1#!/bin/sh
2
3test_description='basic symbolic-ref tests'
4. ./test-lib.sh
5
6# If the tests munging HEAD fail, they can break detection of
7# the git repo, meaning that further tests will operate on
8# the surrounding git repo instead of the trash directory.
9reset_to_sane() {
10 echo ref: refs/heads/foo >.git/HEAD
11}
12
13test_expect_success 'symbolic-ref writes HEAD' '
14 git symbolic-ref HEAD refs/heads/foo &&
15 echo ref: refs/heads/foo >expect &&
16 test_cmp expect .git/HEAD
17'
18
19test_expect_success 'symbolic-ref reads HEAD' '
20 echo refs/heads/foo >expect &&
21 git symbolic-ref HEAD >actual &&
22 test_cmp expect actual
23'
24
25test_expect_success 'symbolic-ref refuses non-ref for HEAD' '
26 test_must_fail git symbolic-ref HEAD foo
27'
28reset_to_sane
29
30test_expect_success 'symbolic-ref refuses bare sha1' '
31 echo content >file && git add file && git commit -m one &&
32 test_must_fail git symbolic-ref HEAD `git rev-parse HEAD`
33'
34reset_to_sane
35
36test_expect_success 'symbolic-ref deletes HEAD' '
37 git symbolic-ref -d HEAD &&
38 test_path_is_file .git/refs/heads/foo &&
39 test_path_is_missing .git/HEAD
40'
41reset_to_sane
42
43test_expect_success 'symbolic-ref deletes dangling HEAD' '
44 git symbolic-ref HEAD refs/heads/missing &&
45 git symbolic-ref -d HEAD &&
46 test_path_is_missing .git/refs/heads/missing &&
47 test_path_is_missing .git/HEAD
48'
49reset_to_sane
50
51test_expect_success 'symbolic-ref fails to delete missing FOO' '
52 echo "fatal: Cannot delete FOO, not a symbolic ref" >expect &&
53 test_must_fail git symbolic-ref -d FOO >actual 2>&1 &&
54 test_cmp expect actual
55'
56reset_to_sane
57
58test_expect_success 'symbolic-ref fails to delete real ref' '
59 echo "fatal: Cannot delete refs/heads/foo, not a symbolic ref" >expect &&
60 test_must_fail git symbolic-ref -d refs/heads/foo >actual 2>&1 &&
61 test_path_is_file .git/refs/heads/foo &&
62 test_cmp expect actual
63'
64reset_to_sane
65
66test_expect_success 'create large ref name' '
67 # make 256+ character ref; some systems may not handle that,
68 # so be gentle
69 long=0123456789abcdef &&
70 long=$long/$long/$long/$long &&
71 long=$long/$long/$long/$long &&
72 long_ref=refs/heads/$long &&
73 tree=$(git write-tree) &&
74 commit=$(echo foo | git commit-tree $tree) &&
75 if git update-ref $long_ref $commit; then
76 test_set_prereq LONG_REF
77 else
78 echo >&2 "long refs not supported"
79 fi
80'
81
82test_expect_success LONG_REF 'symbolic-ref can point to large ref name' '
83 git symbolic-ref HEAD $long_ref &&
84 echo $long_ref >expect &&
85 git symbolic-ref HEAD >actual &&
86 test_cmp expect actual
87'
88
89test_expect_success LONG_REF 'we can parse long symbolic ref' '
90 echo $commit >expect &&
91 git rev-parse --verify HEAD >actual &&
92 test_cmp expect actual
93'
94
95test_done