thodg/libgit2/tests/libgit2/merge/analysis.c

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• Hash : 3344fddc
  Author :
  Date : 2021-11-16T23:29:22
  

  refactor: `tests` is now `tests/libgit2`
  
  Like we want to separate libgit2 and utility source code, we want to
  separate libgit2 and utility tests.  Start by moving all the tests into
  libgit2.
  

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• tests/libgit2/merge/analysis.c

• /*
  NOTE: this is the implementation for both merge/trees/analysis.c and merge/workdir/analysis.c
  You probably want to make changes to both files.
  */
  
  #include "clar_libgit2.h"
  #include "git2/repository.h"
  #include "git2/merge.h"
  #include "git2/annotated_commit.h"
  #include "git2/sys/index.h"
  #include "merge.h"
  #include "merge_helpers.h"
  #include "refs.h"
  #include "posix.h"
  
  #define TEST_REPO_PATH "merge-resolve"
  
  #define UPTODATE_BRANCH         "master"
  #define PREVIOUS_BRANCH         "previous"
  
  #define FASTFORWARD_BRANCH      "ff_branch"
  #define FASTFORWARD_ID          "fd89f8cffb663ac89095a0f9764902e93ceaca6a"
  
  #define NOFASTFORWARD_BRANCH    "branch"
  #define NOFASTFORWARD_ID        "7cb63eed597130ba4abb87b3e544b85021905520"
  
  static git_repository *sandbox;
  static git_repository *repo;
  
  void test_merge_analysis__initialize_with_bare_repository(void)
  {
  	sandbox = cl_git_sandbox_init(TEST_REPO_PATH);
  	cl_git_pass(git_repository_open_ext(&repo, git_repository_path(sandbox),
  					    GIT_REPOSITORY_OPEN_BARE, NULL));
  }
  
  void test_merge_analysis__initialize_with_nonbare_repository(void)
  {
  	sandbox = cl_git_sandbox_init(TEST_REPO_PATH);
  	cl_git_pass(git_repository_open_ext(&repo, git_repository_workdir(sandbox),
  					    0, NULL));
  }
  
  void test_merge_analysis__cleanup(void)
  {
  	git_repository_free(repo);
  	cl_git_sandbox_cleanup();
  }
  
  static void analysis_from_branch(
  	git_merge_analysis_t *merge_analysis,
  	git_merge_preference_t *merge_pref,
  	const char *our_branchname,
  	const char *their_branchname)
  {
  	git_str our_refname = GIT_STR_INIT;
  	git_str their_refname = GIT_STR_INIT;
  	git_reference *our_ref;
  	git_reference *their_ref;
  	git_annotated_commit *their_head;
  
  	if (our_branchname != NULL) {
  		cl_git_pass(git_str_printf(&our_refname, "%s%s", GIT_REFS_HEADS_DIR, our_branchname));
  		cl_git_pass(git_reference_lookup(&our_ref, repo, git_str_cstr(&our_refname)));
  	} else {
  		cl_git_pass(git_reference_lookup(&our_ref, repo, GIT_HEAD_FILE));
  	}
  
  	cl_git_pass(git_str_printf(&their_refname, "%s%s", GIT_REFS_HEADS_DIR, their_branchname));
  
  	cl_git_pass(git_reference_lookup(&their_ref, repo, git_str_cstr(&their_refname)));
  	cl_git_pass(git_annotated_commit_from_ref(&their_head, repo, their_ref));
  
  	cl_git_pass(git_merge_analysis_for_ref(merge_analysis, merge_pref, repo, our_ref, (const git_annotated_commit **)&their_head, 1));
  
  	git_str_dispose(&our_refname);
  	git_str_dispose(&their_refname);
  	git_annotated_commit_free(their_head);
  	git_reference_free(our_ref);
  	git_reference_free(their_ref);
  }
  
  void test_merge_analysis__fastforward(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, FASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL|GIT_MERGE_ANALYSIS_FASTFORWARD, merge_analysis);
  }
  
  void test_merge_analysis__no_fastforward(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
  }
  
  void test_merge_analysis__uptodate(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, UPTODATE_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
  }
  
  void test_merge_analysis__uptodate_merging_prev_commit(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, PREVIOUS_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
  }
  
  void test_merge_analysis__unborn(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  	git_str master = GIT_STR_INIT;
  
  	cl_git_pass(git_str_joinpath(&master, git_repository_path(repo), "refs/heads/master"));
  	cl_must_pass(p_unlink(git_str_cstr(&master)));
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_FASTFORWARD|GIT_MERGE_ANALYSIS_UNBORN, merge_analysis);
  
  	git_str_dispose(&master);
  }
  
  void test_merge_analysis__fastforward_with_config_noff(void)
  {
  	git_config *config;
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	cl_git_pass(git_repository_config(&config, repo));
  	cl_git_pass(git_config_set_string(config, "merge.ff", "false"));
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, FASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL|GIT_MERGE_ANALYSIS_FASTFORWARD, merge_analysis);
  
  	cl_assert_equal_i(GIT_MERGE_PREFERENCE_NO_FASTFORWARD, (merge_pref & GIT_MERGE_PREFERENCE_NO_FASTFORWARD));
  
  	git_config_free(config);
  }
  
  void test_merge_analysis__no_fastforward_with_config_ffonly(void)
  {
  	git_config *config;
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	cl_git_pass(git_repository_config(&config, repo));
  	cl_git_pass(git_config_set_string(config, "merge.ff", "only"));
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NULL, NOFASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
  
  	cl_assert_equal_i(GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY, (merge_pref & GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY));
  
  	git_config_free(config);
  }
  
  void test_merge_analysis__between_uptodate_refs(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, NOFASTFORWARD_BRANCH, PREVIOUS_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_UP_TO_DATE, merge_analysis);
  }
  
  void test_merge_analysis__between_noff_refs(void)
  {
  	git_merge_analysis_t merge_analysis;
  	git_merge_preference_t merge_pref;
  
  	analysis_from_branch(&merge_analysis, &merge_pref, "branch", FASTFORWARD_BRANCH);
  	cl_assert_equal_i(GIT_MERGE_ANALYSIS_NORMAL, merge_analysis);
  }
  

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