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1#!/bin/sh
2#
3# Copyright (c) 2009, Red Hat Inc, Author: Michael S. Tsirkin (mst@redhat.com)
4#
5
6test_description='test clone --reference'
7
8. ./test-lib.sh
9
10base_dir=$(pwd)
11
12test_alternate_is_used () {
13 alternates_file="$1" &&
14 working_dir="$2" &&
15 test_line_count = 1 "$alternates_file" &&
16 echo "0 objects, 0 kilobytes" >expect &&
17 git -C "$working_dir" count-objects >actual &&
18 test_cmp expect actual
19}
20
21test_expect_success 'setup' '
22 git config --global protocol.file.allow always
23'
24
25test_expect_success 'preparing first repository' '
26 test_create_repo A &&
27 (
28 cd A &&
29 echo first >file1 &&
30 git add file1 &&
31 git commit -m A-initial
32 )
33'
34
35test_expect_success 'preparing second repository' '
36 git clone A B &&
37 (
38 cd B &&
39 echo second >file2 &&
40 git add file2 &&
41 git commit -m B-addition &&
42 git repack -a -d &&
43 git prune
44 )
45'
46
47test_expect_success 'preparing superproject' '
48 test_create_repo super &&
49 (
50 cd super &&
51 echo file >file &&
52 git add file &&
53 git commit -m B-super-initial
54 )
55'
56
57test_expect_success 'submodule add --reference uses alternates' '
58 (
59 cd super &&
60 git submodule add --reference ../B "file://$base_dir/A" sub &&
61 git commit -m B-super-added &&
62 git repack -ad
63 ) &&
64 test_alternate_is_used super/.git/modules/sub/objects/info/alternates super/sub
65'
66
67test_expect_success 'submodule add --reference with --dissociate does not use alternates' '
68 (
69 cd super &&
70 git submodule add --reference ../B --dissociate "file://$base_dir/A" sub-dissociate &&
71 git commit -m B-super-added &&
72 git repack -ad
73 ) &&
74 test_path_is_missing super/.git/modules/sub-dissociate/objects/info/alternates
75'
76
77test_expect_success 'that reference gets used with add' '
78 (
79 cd super/sub &&
80 echo "0 objects, 0 kilobytes" >expected &&
81 git count-objects >current &&
82 diff expected current
83 )
84'
85
86# The tests up to this point, and repositories created by them
87# (A, B, super and super/sub), are about setting up the stage
88# for subsequent tests and meant to be kept throughout the
89# remainder of the test.
90# Tests from here on, if they create their own test repository,
91# are expected to clean after themselves.
92
93test_expect_success 'updating superproject keeps alternates' '
94 test_when_finished "rm -rf super-clone" &&
95 git clone super super-clone &&
96 git -C super-clone submodule update --init --reference ../B &&
97 test_alternate_is_used super-clone/.git/modules/sub/objects/info/alternates super-clone/sub
98'
99
100test_expect_success 'updating superproject with --dissociate does not keep alternates' '
101 test_when_finished "rm -rf super-clone" &&
102 git clone super super-clone &&
103 git -C super-clone submodule update --init --reference ../B --dissociate &&
104 test_path_is_missing super-clone/.git/modules/sub/objects/info/alternates
105'
106
107test_expect_success 'submodules use alternates when cloning a superproject' '
108 test_when_finished "rm -rf super-clone" &&
109 git clone --reference super --recursive super super-clone &&
110 (
111 cd super-clone &&
112 # test superproject has alternates setup correctly
113 test_alternate_is_used .git/objects/info/alternates . &&
114 # test submodule has correct setup
115 test_alternate_is_used .git/modules/sub/objects/info/alternates sub
116 )
117'
118
119test_expect_success 'missing submodule alternate fails clone and submodule update' '
120 test_when_finished "rm -rf super-clone" &&
121 git clone super super2 &&
122 test_must_fail git clone --recursive --reference super2 super2 super-clone &&
123 (
124 cd super-clone &&
125 # test superproject has alternates setup correctly
126 test_alternate_is_used .git/objects/info/alternates . &&
127 # update of the submodule succeeds
128 test_must_fail git submodule update --init &&
129 # and we have no alternates:
130 test_path_is_missing .git/modules/sub/objects/info/alternates &&
131 test_path_is_missing sub/file1
132 )
133'
134
135test_expect_success 'ignoring missing submodule alternates passes clone and submodule update' '
136 test_when_finished "rm -rf super-clone" &&
137 git clone --reference-if-able super2 --recursive super2 super-clone &&
138 (
139 cd super-clone &&
140 # test superproject has alternates setup correctly
141 test_alternate_is_used .git/objects/info/alternates . &&
142 # update of the submodule succeeds
143 git submodule update --init &&
144 # and we have no alternates:
145 test_path_is_missing .git/modules/sub/objects/info/alternates &&
146 test_path_is_file sub/file1
147 )
148'
149
150test_expect_success 'preparing second superproject with a nested submodule plus partial clone' '
151 test_create_repo supersuper &&
152 (
153 cd supersuper &&
154 echo "I am super super." >file &&
155 git add file &&
156 git commit -m B-super-super-initial &&
157 git submodule add "file://$base_dir/super" subwithsub &&
158 git commit -m B-super-super-added &&
159 git submodule update --init --recursive &&
160 git repack -ad
161 ) &&
162 git clone supersuper supersuper2 &&
163 (
164 cd supersuper2 &&
165 git submodule update --init
166 )
167'
168
169# At this point there are three root-level positories: A, B, super and super2
170
171test_expect_success 'nested submodule alternate in works and is actually used' '
172 test_when_finished "rm -rf supersuper-clone" &&
173 git clone --recursive --reference supersuper supersuper supersuper-clone &&
174 (
175 cd supersuper-clone &&
176 # test superproject has alternates setup correctly
177 test_alternate_is_used .git/objects/info/alternates . &&
178 # immediate submodule has alternate:
179 test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
180 # nested submodule also has alternate:
181 test_alternate_is_used .git/modules/subwithsub/modules/sub/objects/info/alternates subwithsub/sub
182 )
183'
184
185check_that_two_of_three_alternates_are_used() {
186 test_alternate_is_used .git/objects/info/alternates . &&
187 # immediate submodule has alternate:
188 test_alternate_is_used .git/modules/subwithsub/objects/info/alternates subwithsub &&
189 # but nested submodule has no alternate:
190 test_path_is_missing .git/modules/subwithsub/modules/sub/objects/info/alternates
191}
192
193
194test_expect_success 'missing nested submodule alternate fails clone and submodule update' '
195 test_when_finished "rm -rf supersuper-clone" &&
196 test_must_fail git clone --recursive --reference supersuper2 supersuper2 supersuper-clone &&
197 (
198 cd supersuper-clone &&
199 check_that_two_of_three_alternates_are_used &&
200 # update of the submodule fails
201 cat >expect <<-\EOF &&
202 fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
203 Failed to clone '\''sub'\''. Retry scheduled
204 fatal: submodule '\''sub-dissociate'\'' cannot add alternate: path ... does not exist
205 Failed to clone '\''sub-dissociate'\''. Retry scheduled
206 fatal: submodule '\''sub'\'' cannot add alternate: path ... does not exist
207 Failed to clone '\''sub'\'' a second time, aborting
208 fatal: Failed to recurse into submodule path ...
209 EOF
210 test_must_fail git submodule update --init --recursive 2>err &&
211 grep -e fatal: -e ^Failed err >actual.raw &&
212 sed -e "s/path $SQ[^$SQ]*$SQ/path .../" <actual.raw >actual &&
213 test_cmp expect actual
214 )
215'
216
217test_expect_success 'missing nested submodule alternate in --reference-if-able mode' '
218 test_when_finished "rm -rf supersuper-clone" &&
219 git clone --recursive --reference-if-able supersuper2 supersuper2 supersuper-clone &&
220 (
221 cd supersuper-clone &&
222 check_that_two_of_three_alternates_are_used &&
223 # update of the submodule succeeds
224 git submodule update --init --recursive
225 )
226'
227
228test_done