thodg/libgit2/tests/object/blob/write.c

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• Hash : f0e693b1
  Author :
  Date : 2021-09-07T17:53:49
  

  str: introduce `git_str` for internal, `git_buf` is external
  
  libgit2 has two distinct requirements that were previously solved by
  `git_buf`.  We require:
  
  1. A general purpose string class that provides a number of utility APIs
     for manipulating data (eg, concatenating, truncating, etc).
  2. A structure that we can use to return strings to callers that they
     can take ownership of.
  
  By using a single class (`git_buf`) for both of these purposes, we have
  confused the API to the point that refactorings are difficult and
  reasoning about correctness is also difficult.
  
  Move the utility class `git_buf` to be called `git_str`: this represents
  its general purpose, as an internal string buffer class.  The name also
  is an homage to Junio Hamano ("gitstr").
  
  The public API remains `git_buf`, and has a much smaller footprint.  It
  is generally only used as an "out" param with strict requirements that
  follow the documentation.  (Exceptions exist for some legacy APIs to
  avoid breaking callers unnecessarily.)
  
  Utility functions exist to convert a user-specified `git_buf` to a
  `git_str` so that we can call internal functions, then converting it
  back again.
  

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• tests/object/blob/write.c

• #include "clar_libgit2.h"
  #include "posix.h"
  #include "path.h"
  #include "futils.h"
  
  static git_repository *repo;
  
  #define WORKDIR "empty_standard_repo"
  #define BARE_REPO "testrepo.git"
  #define ELSEWHERE "elsewhere"
  
  typedef int (*blob_creator_fn)(
  	git_oid *,
  	git_repository *,
  	const char *);
  
  void test_object_blob_write__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  }
  
  static void assert_blob_creation(const char *path_to_file, const char *blob_from_path, blob_creator_fn creator)
  {
  	git_oid oid;
  	cl_git_mkfile(path_to_file, "1..2...3... Can you hear me?\n");
  
  	cl_must_pass(creator(&oid, repo, blob_from_path));
  	cl_assert(git_oid_streq(&oid, "da5e4f20c91c81b44a7e298f3d3fb3fe2f178e32") == 0);
  }
  
  void test_object_blob_write__can_create_a_blob_in_a_standard_repo_from_a_file_located_in_the_working_directory(void)
  {
  	repo = cl_git_sandbox_init(WORKDIR);
  
  	assert_blob_creation(WORKDIR "/test.txt", "test.txt", &git_blob_create_from_workdir);
  }
  
  void test_object_blob_write__can_create_a_blob_in_a_standard_repo_from_a_absolute_filepath_pointing_outside_of_the_working_directory(void)
  {
  	git_str full_path = GIT_STR_INIT;
  
  	repo = cl_git_sandbox_init(WORKDIR);
  
  	cl_must_pass(p_mkdir(ELSEWHERE, 0777));
  	cl_must_pass(git_path_prettify_dir(&full_path, ELSEWHERE, NULL));
  	cl_must_pass(git_str_puts(&full_path, "test.txt"));
  
  	assert_blob_creation(ELSEWHERE "/test.txt", git_str_cstr(&full_path), &git_blob_create_from_disk);
  
  	git_str_dispose(&full_path);
  	cl_must_pass(git_futils_rmdir_r(ELSEWHERE, NULL, GIT_RMDIR_REMOVE_FILES));
  }
  
  void test_object_blob_write__can_create_a_blob_in_a_bare_repo_from_a_absolute_filepath(void)
  {
  	git_str full_path = GIT_STR_INIT;
  
  	repo = cl_git_sandbox_init(BARE_REPO);
  
  	cl_must_pass(p_mkdir(ELSEWHERE, 0777));
  	cl_must_pass(git_path_prettify_dir(&full_path, ELSEWHERE, NULL));
  	cl_must_pass(git_str_puts(&full_path, "test.txt"));
  
  	assert_blob_creation(ELSEWHERE "/test.txt", git_str_cstr(&full_path), &git_blob_create_from_disk);
  
  	git_str_dispose(&full_path);
  	cl_must_pass(git_futils_rmdir_r(ELSEWHERE, NULL, GIT_RMDIR_REMOVE_FILES));
  }
  

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