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Add rename test that used to be really slow

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Before the optimization commits, this test used to take about 20
seconds to run on my machine.  Afterwards, there is still a couple
seconds of data setup, but the actual diff and rename detection
runs in a fraction of a second.
This commit is contained in:
Russell Belfer 2013-07-24 13:12:00 -07:00
parent 427cc255df
commit 397357a048
1 changed files with 57 additions and 0 deletions
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57
tests-clar/diff/rename.c
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@ -1122,3 +1122,60 @@ void test_diff_rename__unmodified_can_be_renamed(void)
git_index_free(index);
git_tree_free(tree);
}
void test_diff_rename__many_files(void)
{
git_index *index;
git_tree *tree;
git_diff_list *diff = NULL;
diff_expects exp;
git_diff_options diffopts = GIT_DIFF_OPTIONS_INIT;
git_diff_find_options opts = GIT_DIFF_FIND_OPTIONS_INIT;
git_buf b = GIT_BUF_INIT;
int i, j;
char tmp[64];
cl_git_pass(git_repository_index(&index, g_repo));
cl_git_pass(
git_revparse_single((git_object **)&tree, g_repo, "HEAD^{tree}"));
cl_git_pass(p_rename("renames/ikeepsix.txt", "renames/ikeepsix2.txt"));
cl_git_pass(git_index_remove_bypath(index, "ikeepsix.txt"));
cl_git_pass(git_index_add_bypath(index, "ikeepsix2.txt"));
for (i = 0; i < 100; i += 2) {
snprintf(tmp, sizeof(tmp), "renames/newfile%03d", i);
for (j = 0; j < i * 128; ++j)
git_buf_printf(&b, "more content %d\n", i);
cl_git_mkfile(tmp, b.ptr);
cl_git_pass(git_index_add_bypath(index, tmp + strlen("renames/")));
}
git_buf_free(&b);
cl_git_pass(git_index_write(index));
cl_git_pass(git_diff_tree_to_index(&diff, g_repo, tree, index, &diffopts));
memset(&exp, 0, sizeof(exp));
cl_git_pass(git_diff_foreach(
diff, diff_file_cb, NULL, NULL, &exp));
cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]);
cl_assert_equal_i(51, exp.file_status[GIT_DELTA_ADDED]);
cl_assert_equal_i(52, exp.files);
opts.flags = GIT_DIFF_FIND_ALL;
cl_git_pass(git_diff_find_similar(diff, &opts));
memset(&exp, 0, sizeof(exp));
cl_git_pass(git_diff_foreach(
diff, diff_file_cb, NULL, NULL, &exp));
cl_assert_equal_i(1, exp.file_status[GIT_DELTA_RENAMED]);
cl_assert_equal_i(50, exp.file_status[GIT_DELTA_ADDED]);
cl_assert_equal_i(51, exp.files);
git_diff_list_free(diff);
git_index_free(index);
git_tree_free(tree);
}