thodg/libgit2/tests/graph/commit_graph.c

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• Hash : 83862c83
  Author :
  Date : 2020-02-17T21:28:13
  

  commit-graph: Add a way to write commit-graph files This change adds the git_commit_graph_writer_* functions to allow to write and create `commit-graph` files from `.idx`/`.pack` files or `git_revwalk`s. Part of: #5757

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• tests/graph/commit_graph.c

• #include "clar_libgit2.h"
  
  #include <git2.h>
  #include <git2/sys/commit_graph.h>
  
  #include "commit_graph.h"
  #include "futils.h"
  
  void test_graph_commit_graph__parse(void)
  {
  	git_repository *repo;
  	struct git_commit_graph_file *file;
  	struct git_commit_graph_entry e, parent;
  	git_oid id;
  	git_buf commit_graph_path = GIT_BUF_INIT;
  
  	cl_git_pass(git_repository_open(&repo, cl_fixture("testrepo.git")));
  	cl_git_pass(git_buf_joinpath(&commit_graph_path, git_repository_path(repo), "objects/info/commit-graph"));
  	cl_git_pass(git_commit_graph_file_open(&file, git_buf_cstr(&commit_graph_path)));
  	cl_assert_equal_i(git_commit_graph_file_needs_refresh(file, git_buf_cstr(&commit_graph_path)), 0);
  
  	cl_git_pass(git_oid_fromstr(&id, "5001298e0c09ad9c34e4249bc5801c75e9754fa5"));
  	cl_git_pass(git_commit_graph_entry_find(&e, file, &id, GIT_OID_HEXSZ));
  	cl_assert_equal_oid(&e.sha1, &id);
  	cl_git_pass(git_oid_fromstr(&id, "418382dff1ffb8bdfba833f4d8bbcde58b1e7f47"));
  	cl_assert_equal_oid(&e.tree_oid, &id);
  	cl_assert_equal_i(e.generation, 1);
  	cl_assert_equal_i(e.commit_time, UINT64_C(1273610423));
  	cl_assert_equal_i(e.parent_count, 0);
  
  	cl_git_pass(git_oid_fromstr(&id, "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"));
  	cl_git_pass(git_commit_graph_entry_find(&e, file, &id, GIT_OID_HEXSZ));
  	cl_assert_equal_oid(&e.sha1, &id);
  	cl_assert_equal_i(e.generation, 5);
  	cl_assert_equal_i(e.commit_time, UINT64_C(1274813907));
  	cl_assert_equal_i(e.parent_count, 2);
  
  	cl_git_pass(git_oid_fromstr(&id, "9fd738e8f7967c078dceed8190330fc8648ee56a"));
  	cl_git_pass(git_commit_graph_entry_parent(&parent, file, &e, 0));
  	cl_assert_equal_oid(&parent.sha1, &id);
  	cl_assert_equal_i(parent.generation, 4);
  
  	cl_git_pass(git_oid_fromstr(&id, "c47800c7266a2be04c571c04d5a6614691ea99bd"));
  	cl_git_pass(git_commit_graph_entry_parent(&parent, file, &e, 1));
  	cl_assert_equal_oid(&parent.sha1, &id);
  	cl_assert_equal_i(parent.generation, 3);
  
  	git_commit_graph_file_free(file);
  	git_repository_free(repo);
  	git_buf_dispose(&commit_graph_path);
  }
  
  void test_graph_commit_graph__parse_octopus_merge(void)
  {
  	git_repository *repo;
  	struct git_commit_graph_file *file;
  	struct git_commit_graph_entry e, parent;
  	git_oid id;
  	git_buf commit_graph_path = GIT_BUF_INIT;
  
  	cl_git_pass(git_repository_open(&repo, cl_fixture("merge-recursive/.gitted")));
  	cl_git_pass(git_buf_joinpath(&commit_graph_path, git_repository_path(repo), "objects/info/commit-graph"));
  	cl_git_pass(git_commit_graph_file_open(&file, git_buf_cstr(&commit_graph_path)));
  
  	cl_git_pass(git_oid_fromstr(&id, "d71c24b3b113fd1d1909998c5bfe33b86a65ee03"));
  	cl_git_pass(git_commit_graph_entry_find(&e, file, &id, GIT_OID_HEXSZ));
  	cl_assert_equal_oid(&e.sha1, &id);
  	cl_git_pass(git_oid_fromstr(&id, "348f16ffaeb73f319a75cec5b16a0a47d2d5e27c"));
  	cl_assert_equal_oid(&e.tree_oid, &id);
  	cl_assert_equal_i(e.generation, 7);
  	cl_assert_equal_i(e.commit_time, UINT64_C(1447083009));
  	cl_assert_equal_i(e.parent_count, 3);
  
  	cl_git_pass(git_oid_fromstr(&id, "ad2ace9e15f66b3d1138922e6ffdc3ea3f967fa6"));
  	cl_git_pass(git_commit_graph_entry_parent(&parent, file, &e, 0));
  	cl_assert_equal_oid(&parent.sha1, &id);
  	cl_assert_equal_i(parent.generation, 6);
  
  	cl_git_pass(git_oid_fromstr(&id, "483065df53c0f4a02cdc6b2910b05d388fc17ffb"));
  	cl_git_pass(git_commit_graph_entry_parent(&parent, file, &e, 1));
  	cl_assert_equal_oid(&parent.sha1, &id);
  	cl_assert_equal_i(parent.generation, 2);
  
  	cl_git_pass(git_oid_fromstr(&id, "815b5a1c80ca749d705c7aa0cb294a00cbedd340"));
  	cl_git_pass(git_commit_graph_entry_parent(&parent, file, &e, 2));
  	cl_assert_equal_oid(&parent.sha1, &id);
  	cl_assert_equal_i(parent.generation, 6);
  
  	git_commit_graph_file_free(file);
  	git_repository_free(repo);
  	git_buf_dispose(&commit_graph_path);
  }
  
  void test_graph_commit_graph__writer(void)
  {
  	git_repository *repo;
  	git_commit_graph_writer *w = NULL;
  	git_revwalk *walk;
  	git_commit_graph_writer_options opts = GIT_COMMIT_GRAPH_WRITER_OPTIONS_INIT;
  	git_buf cgraph = GIT_BUF_INIT, expected_cgraph = GIT_BUF_INIT, path = GIT_BUF_INIT;
  
  	cl_git_pass(git_repository_open(&repo, cl_fixture("testrepo.git")));
  
  	cl_git_pass(git_buf_joinpath(&path, git_repository_path(repo), "objects/info"));
  	cl_git_pass(git_commit_graph_writer_new(&w, git_buf_cstr(&path)));
  
  	/* This is equivalent to `git commit-graph write --reachable`. */
  	cl_git_pass(git_revwalk_new(&walk, repo));
  	cl_git_pass(git_revwalk_push_glob(walk, "refs/*"));
  	cl_git_pass(git_commit_graph_writer_add_revwalk(w, walk));
  	git_revwalk_free(walk);
  
  	cl_git_pass(git_commit_graph_writer_dump(&cgraph, w, &opts));
  	cl_git_pass(git_buf_joinpath(&path, git_repository_path(repo), "objects/info/commit-graph"));
  	cl_git_pass(git_futils_readbuffer(&expected_cgraph, git_buf_cstr(&path)));
  
  	cl_assert_equal_i(git_buf_len(&cgraph), git_buf_len(&expected_cgraph));
  	cl_assert_equal_i(memcmp(git_buf_cstr(&cgraph), git_buf_cstr(&expected_cgraph), git_buf_len(&cgraph)), 0);
  
  	git_buf_dispose(&cgraph);
  	git_buf_dispose(&expected_cgraph);
  	git_buf_dispose(&path);
  	git_commit_graph_writer_free(w);
  	git_repository_free(repo);
  }
  

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