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-rw-r--r--t/helper/test-read-graph.c53
1 files changed, 53 insertions, 0 deletions
diff --git a/t/helper/test-read-graph.c b/t/helper/test-read-graph.c
new file mode 100644
index 0000000000..d2884efe0a
--- /dev/null
+++ b/t/helper/test-read-graph.c
@@ -0,0 +1,53 @@
+#include "test-tool.h"
+#include "cache.h"
+#include "commit-graph.h"
+#include "repository.h"
+#include "object-store.h"
+
+int cmd__read_graph(int argc, const char **argv)
+{
+ struct commit_graph *graph = NULL;
+ char *graph_name;
+ int open_ok;
+ int fd;
+ struct stat st;
+ const char *object_dir;
+
+ setup_git_directory();
+ object_dir = get_object_directory();
+
+ graph_name = get_commit_graph_filename(object_dir);
+
+ open_ok = open_commit_graph(graph_name, &fd, &st);
+ if (!open_ok)
+ die_errno(_("Could not open commit-graph '%s'"), graph_name);
+
+ graph = load_commit_graph_one_fd_st(fd, &st);
+ if (!graph)
+ return 1;
+
+ FREE_AND_NULL(graph_name);
+
+ 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_extra_edges)
+ printf(" extra_edges");
+ printf("\n");
+
+ UNLEAK(graph);
+
+ return 0;
+}