thodg/libgit2/tests-clar/refs/branches/iterator.c

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• Hash : 8ec889a4
  Author :
  Date : 2013-11-02T14:07:02
  

  branch: move from foreach to an iterator Create a git_branch_iterator type which is equivalent to the foreach but lets us write loops instead of callbacks. Since the introduction of git_reference_shorthand(), the added value of passing the name is reduced.

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• tests-clar/refs/branches/iterator.c

• #include "clar_libgit2.h"
  #include "refs.h"
  
  static git_repository *repo;
  static git_reference *fake_remote;
  
  void test_refs_branches_iterator__initialize(void)
  {
  	git_oid id;
  
  	cl_fixture_sandbox("testrepo.git");
  	cl_git_pass(git_repository_open(&repo, "testrepo.git"));
  
  	cl_git_pass(git_oid_fromstr(&id, "be3563ae3f795b2b4353bcce3a527ad0a4f7f644"));
  	cl_git_pass(git_reference_create(&fake_remote, repo, "refs/remotes/nulltoken/master", &id, 0));
  }
  
  void test_refs_branches_iterator__cleanup(void)
  {
  	git_reference_free(fake_remote);
  	fake_remote = NULL;
  
  	git_repository_free(repo);
  	repo = NULL;
  
  	cl_fixture_cleanup("testrepo.git");
  
  	cl_git_sandbox_cleanup();
  }
  
  static void assert_retrieval(unsigned int flags, unsigned int expected_count)
  {
  	git_branch_iterator *iter;
  	git_reference *ref;
  	int count = 0, error;
  	unsigned int type;
  
  	cl_git_pass(git_branch_iterator_new(&iter, repo, flags));
  	while ((error = git_branch_next(&ref, &type, iter)) == 0) {
  		count++;
  		git_reference_free(ref);
  	}
  
  	git_branch_iterator_free(iter);
  	cl_assert_equal_i(error, GIT_ITEROVER);
  	cl_assert_equal_i(expected_count, count);
  }
  
  void test_refs_branches_iterator__retrieve_all_branches(void)
  {
  	assert_retrieval(GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE, 14);
  }
  
  void test_refs_branches_iterator__retrieve_remote_branches(void)
  {
  	assert_retrieval(GIT_BRANCH_REMOTE, 2);
  }
  
  void test_refs_branches_iterator__retrieve_local_branches(void)
  {
  	assert_retrieval(GIT_BRANCH_LOCAL, 12);
  }
  
  struct expectations {
  	const char *branch_name;
  	int encounters;
  };
  
  static void assert_branch_has_been_found(struct expectations *findings, const char* expected_branch_name)
  {
  	int pos = 0;
  
  	for (pos = 0; findings[pos].branch_name; ++pos) {
  		if (strcmp(expected_branch_name, findings[pos].branch_name) == 0) {
  			cl_assert_equal_i(1, findings[pos].encounters);
  			return;
  		}
  	}
  
  	cl_fail("expected branch not found in list.");
  }
  
  static void contains_branches(struct expectations exp[], git_branch_iterator *iter)
  {
  	git_reference *ref;
  	unsigned int type;
  	int error, pos = 0;
  
  	while ((error = git_branch_next(&ref, &type, iter)) == 0) {
  		for (pos = 0; exp[pos].branch_name; ++pos) {
  			if (strcmp(git_reference_shorthand(ref), exp[pos].branch_name) == 0)
  				exp[pos].encounters++;
  		}
  
  		git_reference_free(ref);
  	}
  
  	cl_assert_equal_i(error, GIT_ITEROVER);
  }
  
  /*
   * $ git branch -r
   *  nulltoken/HEAD -> nulltoken/master
   *  nulltoken/master
   */
  void test_refs_branches_iterator__retrieve_remote_symbolic_HEAD_when_present(void)
  {
  	git_branch_iterator *iter;
  	struct expectations exp[] = {
  		{ "nulltoken/HEAD", 0 },
  		{ "nulltoken/master", 0 },
  		{ NULL, 0 }
  	};
  
  	git_reference_free(fake_remote);
  	cl_git_pass(git_reference_symbolic_create(&fake_remote, repo, "refs/remotes/nulltoken/HEAD", "refs/remotes/nulltoken/master", 0));
  
  	assert_retrieval(GIT_BRANCH_REMOTE, 3);
  
  	cl_git_pass(git_branch_iterator_new(&iter, repo, GIT_BRANCH_REMOTE));
  	contains_branches(exp, iter);
  	git_branch_iterator_free(iter);
  
  	assert_branch_has_been_found(exp, "nulltoken/HEAD");
  	assert_branch_has_been_found(exp, "nulltoken/master");
  }
  
  void test_refs_branches_iterator__mix_of_packed_and_loose(void)
  {
  	git_branch_iterator *iter;
  	struct expectations exp[] = {
  		{ "master", 0 },
  		{ "origin/HEAD", 0 },
  		{ "origin/master", 0 },
  		{ "origin/packed", 0 },
  		{ NULL, 0 }
  	};
  	git_repository *r2;
  
  	r2 = cl_git_sandbox_init("testrepo2");
  
  	cl_git_pass(git_branch_iterator_new(&iter, r2, GIT_BRANCH_LOCAL | GIT_BRANCH_REMOTE));
  	contains_branches(exp, iter);
  
  	git_branch_iterator_free(iter);
  
  	assert_branch_has_been_found(exp, "master");
  	assert_branch_has_been_found(exp, "origin/HEAD");
  	assert_branch_has_been_found(exp, "origin/master");
  	assert_branch_has_been_found(exp, "origin/packed");
  }
  

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