From a21cbb12db62426ca789045d5ac5c96ca069f0ea Mon Sep 17 00:00:00 2001 From: Russell Belfer Date: Wed, 22 May 2013 10:37:12 -0700 Subject: Significant rename detection rewrite This flips rename detection around so instead of creating a forward mapping from deltas to possible rename targets, instead it creates a reverse mapping, looking at possible targets and trying to find a source that they could have been renamed or copied from. This is important because each output can only have a single source, but a given source could map to multiple outputs (in the form of COPIED records). Additionally, this makes a couple of tweaks to the public rename detection APIs, mostly renaming a couple of options that control the behavior to make more sense and to be more like core Git. I walked through the tests looking at the exact results and updated the expectations based on what I saw. The new code is different from the old because it cannot give some nonsense results (like A was renamed to both B and C) which were part of the outputs previously. --- tests-clar/diff/rename.c | 34 ++++++++++++++++++++++++++++------ 1 file changed, 28 insertions(+), 6 deletions(-) (limited to 'tests-clar/diff') diff --git a/tests-clar/diff/rename.c b/tests-clar/diff/rename.c index a78e33939..b4f9df713 100644 --- a/tests-clar/diff/rename.c +++ b/tests-clar/diff/rename.c @@ -14,6 +14,18 @@ void test_diff_rename__cleanup(void) cl_git_sandbox_cleanup(); } +/* +static int debug_print( + const git_diff_delta *delta, const git_diff_range *range, char usage, + const char *line, size_t line_len, void *data) +{ + GIT_UNUSED(delta); GIT_UNUSED(range); GIT_UNUSED(usage); + GIT_UNUSED(line_len); GIT_UNUSED(data); + fputs(line, stderr); + return 0; +} +*/ + /* * Renames repo has: * @@ -72,8 +84,10 @@ void test_diff_rename__match_oid(void) /* git diff 31e47d8c1fa36d7f8d537b96158e3f024de0a9f2 \ * 2bc7f351d20b53f1c72c16c4b036e491c478c49a + * don't use NULL opts to avoid config `diff.renames` contamination */ - cl_git_pass(git_diff_find_similar(diff, NULL)); + opts.flags = GIT_DIFF_FIND_RENAMES; + cl_git_pass(git_diff_find_similar(diff, &opts)); memset(&exp, 0, sizeof(exp)); cl_git_pass(git_diff_foreach( @@ -243,8 +257,8 @@ void test_diff_rename__not_exact_match(void) cl_assert_equal_i(5, exp.files); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_UNMODIFIED]); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_MODIFIED]); - cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_ADDED]); + cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_COPIED]); git_diff_list_free(diff); @@ -429,8 +443,8 @@ void test_diff_rename__working_directory_changes(void) cl_assert_equal_i(6, exp.files); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_MODIFIED]); - cl_assert_equal_i(3, exp.file_status[GIT_DELTA_UNTRACKED]); cl_assert_equal_i(2, exp.file_status[GIT_DELTA_DELETED]); + cl_assert_equal_i(3, exp.file_status[GIT_DELTA_UNTRACKED]); /* git diff -M 2bc7f351d20b53f1c72c16c4b036e491c478c49a */ opts.flags = GIT_DIFF_FIND_ALL; @@ -441,7 +455,8 @@ void test_diff_rename__working_directory_changes(void) diff, diff_file_cb, diff_hunk_cb, diff_line_cb, &exp)); cl_assert_equal_i(5, exp.files); - cl_assert_equal_i(3, exp.file_status[GIT_DELTA_RENAMED]); + cl_assert_equal_i(2, exp.file_status[GIT_DELTA_RENAMED]); + cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]); cl_assert_equal_i(2, exp.file_status[GIT_DELTA_UNTRACKED]); git_diff_list_free(diff); @@ -466,7 +481,8 @@ void test_diff_rename__working_directory_changes(void) diff, diff_file_cb, diff_hunk_cb, diff_line_cb, &exp)); cl_assert_equal_i(5, exp.files); - cl_assert_equal_i(3, exp.file_status[GIT_DELTA_RENAMED]); + cl_assert_equal_i(2, exp.file_status[GIT_DELTA_RENAMED]); + cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]); cl_assert_equal_i(2, exp.file_status[GIT_DELTA_UNTRACKED]); git_diff_list_free(diff); @@ -521,13 +537,19 @@ void test_diff_rename__working_directory_changes(void) opts.flags = GIT_DIFF_FIND_ALL | GIT_DIFF_FIND_EXACT_MATCH_ONLY; cl_git_pass(git_diff_find_similar(diff, &opts)); + /* + fprintf(stderr, "\n\n"); + cl_git_pass(git_diff_print_raw(diff, debug_print, NULL)); + */ + memset(&exp, 0, sizeof(exp)); cl_git_pass(git_diff_foreach( diff, diff_file_cb, diff_hunk_cb, diff_line_cb, &exp)); cl_assert_equal_i(5, exp.files); cl_assert_equal_i(1, exp.file_status[GIT_DELTA_MODIFIED]); - cl_assert_equal_i(2, exp.file_status[GIT_DELTA_RENAMED]); + cl_assert_equal_i(1, exp.file_status[GIT_DELTA_DELETED]); + cl_assert_equal_i(1, exp.file_status[GIT_DELTA_RENAMED]); cl_assert_equal_i(2, exp.file_status[GIT_DELTA_UNTRACKED]); git_diff_list_free(diff); -- cgit v1.2.1