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Commit | Line | Data |
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14937c2c RS |
1 | #!/bin/sh |
2 | ||
3 | test_description='diff function context' | |
4 | ||
5 | . ./test-lib.sh | |
14937c2c | 6 | |
d3621de7 | 7 | dir="$TEST_DIRECTORY/t4051" |
14937c2c | 8 | |
d3621de7 RS |
9 | commit_and_tag () { |
10 | tag=$1 && | |
11 | shift && | |
12 | git add "$@" && | |
13 | test_tick && | |
14 | git commit -m "$tag" && | |
15 | git tag "$tag" | |
14937c2c RS |
16 | } |
17 | ||
d3621de7 RS |
18 | first_context_line () { |
19 | awk ' | |
20 | found {print; exit} | |
21 | /^@@/ {found = 1} | |
22 | ' | |
14937c2c | 23 | } |
d3621de7 RS |
24 | |
25 | last_context_line () { | |
26 | sed -ne \$p | |
14937c2c RS |
27 | } |
28 | ||
d3621de7 RS |
29 | check_diff () { |
30 | name=$1 | |
31 | desc=$2 | |
32 | options="-W $3" | |
33 | ||
34 | test_expect_success "$desc" ' | |
35 | git diff $options "$name^" "$name" >"$name.diff" | |
36 | ' | |
37 | ||
38 | test_expect_success ' diff applies' ' | |
39 | test_when_finished "git reset --hard" && | |
40 | git checkout --detach "$name^" && | |
41 | git apply --index "$name.diff" && | |
42 | git diff --exit-code "$name" | |
43 | ' | |
14937c2c | 44 | } |
14937c2c RS |
45 | |
46 | test_expect_success 'setup' ' | |
d3621de7 RS |
47 | cat "$dir/includes.c" "$dir/dummy.c" "$dir/dummy.c" "$dir/hello.c" \ |
48 | "$dir/dummy.c" "$dir/dummy.c" >file.c && | |
49 | commit_and_tag initial file.c && | |
50 | ||
51 | grep -v "delete me from hello" <file.c >file.c.new && | |
52 | mv file.c.new file.c && | |
53 | commit_and_tag changed_hello file.c && | |
54 | ||
55 | grep -v "delete me from includes" <file.c >file.c.new && | |
56 | mv file.c.new file.c && | |
57 | commit_and_tag changed_includes file.c && | |
58 | ||
59 | cat "$dir/appended1.c" >>file.c && | |
60 | commit_and_tag appended file.c && | |
61 | ||
62 | cat "$dir/appended2.c" >>file.c && | |
63 | commit_and_tag extended file.c && | |
64 | ||
65 | grep -v "Begin of second part" <file.c >file.c.new && | |
66 | mv file.c.new file.c && | |
6f8d9bcc RS |
67 | commit_and_tag long_common_tail file.c && |
68 | ||
45d2f75f RS |
69 | git checkout initial && |
70 | cat "$dir/hello.c" "$dir/dummy.c" >file.c && | |
71 | commit_and_tag hello_dummy file.c && | |
72 | ||
73 | # overlap function context of 1st change and -u context of 2nd change | |
74 | grep -v "delete me from hello" <"$dir/hello.c" >file.c && | |
75 | sed 2p <"$dir/dummy.c" >>file.c && | |
76 | commit_and_tag changed_hello_dummy file.c && | |
77 | ||
6f8d9bcc RS |
78 | git checkout initial && |
79 | grep -v "delete me from hello" <file.c >file.c.new && | |
80 | mv file.c.new file.c && | |
81 | cat "$dir/appended1.c" >>file.c && | |
82 | commit_and_tag changed_hello_appended file.c | |
d3621de7 RS |
83 | ' |
84 | ||
85 | check_diff changed_hello 'changed function' | |
86 | ||
87 | test_expect_success ' context includes begin' ' | |
88 | grep "^ .*Begin of hello" changed_hello.diff | |
89 | ' | |
90 | ||
91 | test_expect_success ' context includes end' ' | |
92 | grep "^ .*End of hello" changed_hello.diff | |
93 | ' | |
94 | ||
95 | test_expect_success ' context does not include other functions' ' | |
96 | test $(grep -c "^[ +-].*Begin" changed_hello.diff) -le 1 | |
97 | ' | |
98 | ||
99 | test_expect_success ' context does not include preceding empty lines' ' | |
100 | test "$(first_context_line <changed_hello.diff)" != " " | |
101 | ' | |
102 | ||
9e6a4cfc | 103 | test_expect_success ' context does not include trailing empty lines' ' |
d3621de7 RS |
104 | test "$(last_context_line <changed_hello.diff)" != " " |
105 | ' | |
106 | ||
107 | check_diff changed_includes 'changed includes' | |
108 | ||
109 | test_expect_success ' context includes begin' ' | |
110 | grep "^ .*Begin.h" changed_includes.diff | |
111 | ' | |
112 | ||
113 | test_expect_success ' context includes end' ' | |
114 | grep "^ .*End.h" changed_includes.diff | |
115 | ' | |
116 | ||
117 | test_expect_success ' context does not include other functions' ' | |
118 | test $(grep -c "^[ +-].*Begin" changed_includes.diff) -le 1 | |
119 | ' | |
120 | ||
9e6a4cfc | 121 | test_expect_success ' context does not include trailing empty lines' ' |
d3621de7 RS |
122 | test "$(last_context_line <changed_includes.diff)" != " " |
123 | ' | |
124 | ||
125 | check_diff appended 'appended function' | |
126 | ||
127 | test_expect_success ' context includes begin' ' | |
128 | grep "^[+].*Begin of first part" appended.diff | |
129 | ' | |
130 | ||
131 | test_expect_success ' context includes end' ' | |
132 | grep "^[+].*End of first part" appended.diff | |
133 | ' | |
134 | ||
392f6d31 | 135 | test_expect_success ' context does not include other functions' ' |
d3621de7 RS |
136 | test $(grep -c "^[ +-].*Begin" appended.diff) -le 1 |
137 | ' | |
138 | ||
139 | check_diff extended 'appended function part' | |
140 | ||
141 | test_expect_success ' context includes begin' ' | |
142 | grep "^ .*Begin of first part" extended.diff | |
143 | ' | |
144 | ||
145 | test_expect_success ' context includes end' ' | |
146 | grep "^[+].*End of second part" extended.diff | |
147 | ' | |
148 | ||
6d5badb2 | 149 | test_expect_success ' context does not include other functions' ' |
d3621de7 RS |
150 | test $(grep -c "^[ +-].*Begin" extended.diff) -le 2 |
151 | ' | |
152 | ||
153 | test_expect_success ' context does not include preceding empty lines' ' | |
154 | test "$(first_context_line <extended.diff)" != " " | |
155 | ' | |
156 | ||
157 | check_diff long_common_tail 'change with long common tail and no context' -U0 | |
158 | ||
159 | test_expect_success ' context includes begin' ' | |
160 | grep "^ .*Begin of first part" long_common_tail.diff | |
161 | ' | |
162 | ||
e0876bca | 163 | test_expect_success ' context includes end' ' |
d3621de7 RS |
164 | grep "^ .*End of second part" long_common_tail.diff |
165 | ' | |
166 | ||
167 | test_expect_success ' context does not include other functions' ' | |
168 | test $(grep -c "^[ +-].*Begin" long_common_tail.diff) -le 2 | |
169 | ' | |
170 | ||
171 | test_expect_success ' context does not include preceding empty lines' ' | |
172 | test "$(first_context_line <long_common_tail.diff.diff)" != " " | |
14937c2c RS |
173 | ' |
174 | ||
6f8d9bcc RS |
175 | check_diff changed_hello_appended 'changed function plus appended function' |
176 | ||
177 | test_expect_success ' context includes begin' ' | |
178 | grep "^ .*Begin of hello" changed_hello_appended.diff && | |
179 | grep "^[+].*Begin of first part" changed_hello_appended.diff | |
180 | ' | |
181 | ||
182 | test_expect_success ' context includes end' ' | |
183 | grep "^ .*End of hello" changed_hello_appended.diff && | |
184 | grep "^[+].*End of first part" changed_hello_appended.diff | |
185 | ' | |
186 | ||
187 | test_expect_success ' context does not include other functions' ' | |
188 | test $(grep -c "^[ +-].*Begin" changed_hello_appended.diff) -le 2 | |
189 | ' | |
190 | ||
45d2f75f RS |
191 | check_diff changed_hello_dummy 'changed two consecutive functions' |
192 | ||
193 | test_expect_success ' context includes begin' ' | |
194 | grep "^ .*Begin of hello" changed_hello_dummy.diff && | |
195 | grep "^ .*Begin of dummy" changed_hello_dummy.diff | |
196 | ' | |
197 | ||
198 | test_expect_success ' context includes end' ' | |
199 | grep "^ .*End of hello" changed_hello_dummy.diff && | |
200 | grep "^ .*End of dummy" changed_hello_dummy.diff | |
201 | ' | |
202 | ||
203 | test_expect_success ' overlapping hunks are merged' ' | |
204 | test $(grep -c "^@@" changed_hello_dummy.diff) -eq 1 | |
205 | ' | |
206 | ||
14937c2c | 207 | test_done |