summaryrefslogtreecommitdiff
path: root/t/t0090-cache-tree.sh
blob: 94fcb4a78e661ae793eef54ae98b4821218b1e29 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
#!/bin/sh

test_description="Test whether cache-tree is properly updated

Tests whether various commands properly update and/or rewrite the
cache-tree extension.
"
 . ./test-lib.sh

cmp_cache_tree () {
	test-tool dump-cache-tree | sed -e '/#(ref)/d' >actual &&
	sed "s/$OID_REGEX/SHA/" <actual >filtered &&
	test_cmp "$1" filtered
}

# We don't bother with actually checking the SHA1:
# test-tool dump-cache-tree already verifies that all existing data is
# correct.
generate_expected_cache_tree_rec () {
	dir="$1${1:+/}" &&
	parent="$2" &&
	# ls-files might have foo/bar, foo/bar/baz, and foo/bar/quux
	# We want to count only foo because it's the only direct child
	subtrees=$(git ls-files|grep /|cut -d / -f 1|uniq) &&
	subtree_count=$(echo "$subtrees"|awk -v c=0 '$1 != "" {++c} END {print c}') &&
	entries=$(git ls-files|wc -l) &&
	printf "SHA $dir (%d entries, %d subtrees)\n" "$entries" "$subtree_count" &&
	for subtree in $subtrees
	do
		cd "$subtree"
		generate_expected_cache_tree_rec "$dir$subtree" "$dir" || return 1
		cd ..
	done &&
	dir=$parent
}

generate_expected_cache_tree () {
	(
		generate_expected_cache_tree_rec
	)
}

test_cache_tree () {
	generate_expected_cache_tree >expect &&
	cmp_cache_tree expect
}

test_invalid_cache_tree () {
	printf "invalid                                  %s ()\n" "" "$@" >expect &&
	test-tool dump-cache-tree |
	sed -n -e "s/[0-9]* subtrees//" -e '/#(ref)/d' -e '/^invalid /p' >actual &&
	test_cmp expect actual
}

test_no_cache_tree () {
	: >expect &&
	cmp_cache_tree expect
}

test_expect_success 'initial commit has cache-tree' '
	test_commit foo &&
	test_cache_tree
'

test_expect_success 'read-tree HEAD establishes cache-tree' '
	git read-tree HEAD &&
	test_cache_tree
'

test_expect_success 'git-add invalidates cache-tree' '
	test_when_finished "git reset --hard; git read-tree HEAD" &&
	echo "I changed this file" >foo &&
	git add foo &&
	test_invalid_cache_tree
'

test_expect_success 'git-add in subdir invalidates cache-tree' '
	test_when_finished "git reset --hard; git read-tree HEAD" &&
	mkdir dirx &&
	echo "I changed this file" >dirx/foo &&
	git add dirx/foo &&
	test_invalid_cache_tree
'

cat >before <<\EOF
SHA  (3 entries, 2 subtrees)
SHA dir1/ (1 entries, 0 subtrees)
SHA dir2/ (1 entries, 0 subtrees)
EOF

cat >expect <<\EOF
invalid                                   (2 subtrees)
invalid                                  dir1/ (0 subtrees)
SHA dir2/ (1 entries, 0 subtrees)
EOF

test_expect_success 'git-add in subdir does not invalidate sibling cache-tree' '
	git tag no-children &&
	test_when_finished "git reset --hard no-children; git read-tree HEAD" &&
	mkdir dir1 dir2 &&
	test_commit dir1/a &&
	test_commit dir2/b &&
	echo "I changed this file" >dir1/a &&
	cmp_cache_tree before &&
	echo "I changed this file" >dir1/a &&
	git add dir1/a &&
	cmp_cache_tree expect
'

test_expect_success 'update-index invalidates cache-tree' '
	test_when_finished "git reset --hard; git read-tree HEAD" &&
	echo "I changed this file" >foo &&
	git update-index --add foo &&
	test_invalid_cache_tree
'

test_expect_success 'write-tree establishes cache-tree' '
	test-tool scrap-cache-tree &&
	git write-tree &&
	test_cache_tree
'

test_expect_success 'test-tool scrap-cache-tree works' '
	git read-tree HEAD &&
	test-tool scrap-cache-tree &&
	test_no_cache_tree
'

test_expect_success 'second commit has cache-tree' '
	test_commit bar &&
	test_cache_tree
'

test_expect_success PERL 'commit --interactive gives cache-tree on partial commit' '
	cat <<-\EOT >foo.c &&
	int foo()
	{
		return 42;
	}
	int bar()
	{
		return 42;
	}
	EOT
	git add foo.c &&
	test_invalid_cache_tree &&
	git commit -m "add a file" &&
	test_cache_tree &&
	cat <<-\EOT >foo.c &&
	int foo()
	{
		return 43;
	}
	int bar()
	{
		return 44;
	}
	EOT
	test_write_lines p 1 "" s n y q |
	git commit --interactive -m foo &&
	test_cache_tree
'

test_expect_success PERL 'commit -p with shrinking cache-tree' '
	mkdir -p deep/subdir &&
	echo content >deep/subdir/file &&
	git add deep &&
	git commit -m add &&
	git rm -r deep &&

	before=$(wc -c <.git/index) &&
	git commit -m delete -p &&
	after=$(wc -c <.git/index) &&

	# double check that the index shrank
	test $before -gt $after &&

	# and that our index was not corrupted
	git fsck
'

test_expect_success 'commit in child dir has cache-tree' '
	mkdir dir &&
	>dir/child.t &&
	git add dir/child.t &&
	git commit -m dir/child.t &&
	test_cache_tree
'

test_expect_success 'reset --hard gives cache-tree' '
	test-tool scrap-cache-tree &&
	git reset --hard &&
	test_cache_tree
'

test_expect_success 'reset --hard without index gives cache-tree' '
	rm -f .git/index &&
	git reset --hard &&
	test_cache_tree
'

test_expect_success 'checkout gives cache-tree' '
	git tag current &&
	git checkout HEAD^ &&
	test_cache_tree
'

test_expect_success 'checkout -b gives cache-tree' '
	git checkout current &&
	git checkout -b prev HEAD^ &&
	test_cache_tree
'

test_expect_success 'checkout -B gives cache-tree' '
	git checkout current &&
	git checkout -B prev HEAD^ &&
	test_cache_tree
'

test_expect_success 'merge --ff-only maintains cache-tree' '
	git checkout current &&
	git checkout -b changes &&
	test_commit llamas &&
	test_commit pachyderm &&
	test_cache_tree &&
	git checkout current &&
	test_cache_tree &&
	git merge --ff-only changes &&
	test_cache_tree
'

test_expect_success 'merge maintains cache-tree' '
	git checkout current &&
	git checkout -b changes2 &&
	test_commit alpacas &&
	test_cache_tree &&
	git checkout current &&
	test_commit struthio &&
	test_cache_tree &&
	git merge changes2 &&
	test_cache_tree
'

test_expect_success 'partial commit gives cache-tree' '
	git checkout -b partial no-children &&
	test_commit one &&
	test_commit two &&
	echo "some change" >one.t &&
	git add one.t &&
	echo "some other change" >two.t &&
	git commit two.t -m partial &&
	test_cache_tree
'

test_expect_success 'no phantom error when switching trees' '
	mkdir newdir &&
	>newdir/one &&
	git add newdir/one &&
	git checkout 2>errors &&
	test_must_be_empty errors
'

test_expect_success 'switching trees does not invalidate shared index' '
	git update-index --split-index &&
	>split &&
	git add split &&
	test-tool dump-split-index .git/index | grep -v ^own >before &&
	git commit -m "as-is" &&
	test-tool dump-split-index .git/index | grep -v ^own >after &&
	test_cmp before after
'

test_done