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Test setting config var under duplicate header.

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Add a test that exposes a bug in config_write.
It is valid to have multiple separate headers for the same config section, but
config_write will exit after finding the first matching section in certain
situations.
This test proves that config_write will duplicate a variable that already
exists instead of overwriting it if the variable is defined under a duplicate
section header.
This commit is contained in:
Ryan Roden-Corrent 2015-04-21 15:57:20 -04:00 committed by Edward Thomson
parent 2a950c945a
commit 5a70df9436
1 changed files with 49 additions and 0 deletions
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49
tests/config/write.c
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@ -145,6 +145,55 @@ void test_config_write__delete_value_with_duplicate_header(void)
git_config_free(cfg);
}
/*
* This test exposes a bug where duplicate section headers could cause
* config_write to add a new entry when one already exists.
*/
void test_config_write__add_value_with_duplicate_header(void)
{
const char *file_name = "config-duplicate-insert";
const char *entry_name = "foo.c";
const char *old_val = "old";
const char *new_val = "new";
const char *str;
git_config *cfg, *snapshot;
/* c = old should be replaced by c = new.
* The bug causes c = new to be inserted under the first 'foo' header.
*/
const char *file_content =
"[foo]\n" \
" a = b\n" \
"[other]\n" \
" a = b\n" \
"[foo]\n" \
" c = old\n";
/* Write the test config */
cl_git_mkfile(file_name, file_content);
cl_git_pass(git_config_open_ondisk(&cfg, file_name));
/* make sure the expected entry (foo.c) exists */
cl_git_pass(git_config_snapshot(&snapshot, cfg));
cl_git_pass(git_config_get_string(&str, snapshot, entry_name));
cl_assert_equal_s(old_val, str);
git_config_free(snapshot);
/* Try setting foo.c to something else */
cl_git_pass(git_config_set_string(cfg, entry_name, new_val));
git_config_free(cfg);
/* Reopen the file and make sure the new value was set */
cl_git_pass(git_config_open_ondisk(&cfg, file_name));
cl_git_pass(git_config_snapshot(&snapshot, cfg));
cl_git_pass(git_config_get_string(&str, snapshot, entry_name));
cl_assert_equal_s(new_val, str);
/* Cleanup */
git_config_free(snapshot);
git_config_free(cfg);
}
void test_config_write__overwrite_value_with_duplicate_header(void)
{
const char *file_name = "config-duplicate-header";