git/t/helper/test-read-graph.c
Derrick Stolee c78c7a959c test-read-graph: include extra post-parse info
It can be helpful to verify that the 'struct commit_graph' that results
from parsing a commit-graph is correctly structured. The existence of
different chunks is not enough to verify that all of the optional
features are correctly enabled.

Update 'test-tool read-graph' to output an "options:" line that includes
information for different parts of the struct commit_graph.

In particular, this change demonstrates that the read_generation_data
option is never being enabled, which will be fixed in a later change.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-03-01 12:09:55 -08:00

65 lines
1.6 KiB
C

#include "test-tool.h"
#include "cache.h"
#include "commit-graph.h"
#include "repository.h"
#include "object-store.h"
#include "bloom.h"
int cmd__read_graph(int argc, const char **argv)
{
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;
}