pack-bitmap: implement test helpers for pseudo-merge

Implement three new sub-commands for the "bitmap" test-helper:

  - t/helper test-tool bitmap dump-pseudo-merges
  - t/helper test-tool bitmap dump-pseudo-merge-commits <n>
  - t/helper test-tool bitmap dump-pseudo-merge-objects <n>

These three helpers dump the list of pseudo merges, the "parents" of the
nth pseudo-merges, and the set of objects reachable from those parents,
respectively.

These helpers will be useful in subsequent patches when we add test
coverage for pseudo-merge bitmaps.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 27 insertions, 7 deletions

diff --git a/t/helper/test-bitmap.c b/t/helper/test-bitmap.c
index af43ee1cb5..6af2b42678 100644
--- a/t/helper/test-bitmap.c
+++ b/t/helper/test-bitmap.c
@@ -13,21 +13,41 @@ static int bitmap_dump_hashes(void)
 	return test_bitmap_hashes(the_repository);
 }
 
+static int bitmap_dump_pseudo_merges(void)
+{
+	return test_bitmap_pseudo_merges(the_repository);
+}
+
+static int bitmap_dump_pseudo_merge_commits(uint32_t n)
+{
+	return test_bitmap_pseudo_merge_commits(the_repository, n);
+}
+
+static int bitmap_dump_pseudo_merge_objects(uint32_t n)
+{
+	return test_bitmap_pseudo_merge_objects(the_repository, n);
+}
+
 int cmd__bitmap(int argc, const char **argv)
 {
 	setup_git_directory();
 
-	if (argc != 2)
-		goto usage;
-
-	if (!strcmp(argv[1], "list-commits"))
+	if (argc == 2 && !strcmp(argv[1], "list-commits"))
 		return bitmap_list_commits();
-	if (!strcmp(argv[1], "dump-hashes"))
+	if (argc == 2 && !strcmp(argv[1], "dump-hashes"))
 		return bitmap_dump_hashes();
+	if (argc == 2 && !strcmp(argv[1], "dump-pseudo-merges"))
+		return bitmap_dump_pseudo_merges();
+	if (argc == 3 && !strcmp(argv[1], "dump-pseudo-merge-commits"))
+		return bitmap_dump_pseudo_merge_commits(atoi(argv[2]));
+	if (argc == 3 && !strcmp(argv[1], "dump-pseudo-merge-objects"))
+		return bitmap_dump_pseudo_merge_objects(atoi(argv[2]));
 
-usage:
 	usage("\ttest-tool bitmap list-commits\n"
-	      "\ttest-tool bitmap dump-hashes");
+	      "\ttest-tool bitmap dump-hashes\n"
+	      "\ttest-tool bitmap dump-pseudo-merges\n"
+	      "\ttest-tool bitmap dump-pseudo-merge-commits <n>\n"
+	      "\ttest-tool bitmap dump-pseudo-merge-objects <n>");
 
 	return -1;
 }