1 files changed, 64 insertions, 0 deletions
diff --git a/t/helper/test-read-graph.c b/t/helper/test-read-graph.c
new file mode 100644
index 0000000..8c7a83f
--- /dev/null
+++ b/t/helper/test-read-graph.c
@@ -0,0 +1,64 @@
+#include "test-tool.h"
+#include "commit-graph.h"
+#include "repository.h"
+#include "object-store-ll.h"
+#include "bloom.h"
+#include "setup.h"
+
+int cmd__read_graph(int argc UNUSED, const char **argv UNUSED)
+{
+	struct commit_graph *graph = NULL;
+	struct object_directory *odb;
+
+	setup_git_directory();
+	odb = the_repository->objects->odb;
+
+	prepare_repo_settings(the_repository);
+
+	graph = read_commit_graph_one(the_repository, odb);
+	if (!graph)
+		return 1;
+
+	printf("header: %08x %d %d %d %d\n",
+		ntohl(*(uint32_t*)graph->data),
+		*(unsigned char*)(graph->data + 4),
+		*(unsigned char*)(graph->data + 5),
+		*(unsigned char*)(graph->data + 6),
+		*(unsigned char*)(graph->data + 7));
+	printf("num_commits: %u\n", graph->num_commits);
+	printf("chunks:");
+
+	if (graph->chunk_oid_fanout)
+		printf(" oid_fanout");
+	if (graph->chunk_oid_lookup)
+		printf(" oid_lookup");
+	if (graph->chunk_commit_data)
+		printf(" commit_metadata");
+	if (graph->chunk_generation_data)
+		printf(" generation_data");
+	if (graph->chunk_generation_data_overflow)
+		printf(" generation_data_overflow");
+	if (graph->chunk_extra_edges)
+		printf(" extra_edges");
+	if (graph->chunk_bloom_indexes)
+		printf(" bloom_indexes");
+	if (graph->chunk_bloom_data)
+		printf(" bloom_data");
+	printf("\n");
+
+	printf("options:");
+	if (graph->bloom_filter_settings)
+		printf(" bloom(%"PRIu32",%"PRIu32",%"PRIu32")",
+		       graph->bloom_filter_settings->hash_version,
+		       graph->bloom_filter_settings->bits_per_entry,
+		       graph->bloom_filter_settings->num_hashes);
+	if (graph->read_generation_data)
+		printf(" read_generation_data");
+	if (graph->topo_levels)
+		printf(" topo_levels");
+	printf("\n");
+
+	UNLEAK(graph);
+
+	return 0;
+}