thodg/libgit2/tests/submodule/nosubs.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/submodule/nosubs.c

• /* test the submodule APIs on repositories where there are no submodules */
  
  #include "clar_libgit2.h"
  #include "posix.h"
  #include "futils.h"
  
  void test_submodule_nosubs__cleanup(void)
  {
  	cl_git_sandbox_cleanup();
  }
  
  void test_submodule_nosubs__lookup(void)
  {
  	git_repository *repo = cl_git_sandbox_init("status");
  	git_submodule *sm = NULL;
  
  	p_mkdir("status/subrepo", 0777);
  	cl_git_mkfile("status/subrepo/.git", "gitdir: ../.git");
  
  	cl_assert_equal_i(GIT_ENOTFOUND, git_submodule_lookup(&sm, repo, "subdir"));
  
  	cl_assert_equal_i(GIT_EEXISTS, git_submodule_lookup(&sm, repo, "subrepo"));
  
  	cl_assert_equal_i(GIT_ENOTFOUND, git_submodule_lookup(&sm, repo, "subdir"));
  
  	cl_assert_equal_i(GIT_EEXISTS, git_submodule_lookup(&sm, repo, "subrepo"));
  }
  
  static int fake_submod_cb(git_submodule *sm, const char *n, void *p)
  {
  	GIT_UNUSED(sm); GIT_UNUSED(n); GIT_UNUSED(p);
  	return 0;
  }
  
  void test_submodule_nosubs__foreach(void)
  {
  	git_repository *repo = cl_git_sandbox_init("status");
  	cl_git_pass(git_submodule_foreach(repo, fake_submod_cb, NULL));
  }
  
  void test_submodule_nosubs__add(void)
  {
  	git_repository *repo = cl_git_sandbox_init("status");
  	git_submodule *sm, *sm2;
  
  	cl_git_pass(git_submodule_add_setup(&sm, repo, "https://github.com/libgit2/libgit2.git", "submodules/libgit2", 1));
  
  	cl_git_pass(git_submodule_lookup(&sm2, repo, "submodules/libgit2"));
  	git_submodule_free(sm2);
  
  	cl_git_pass(git_submodule_foreach(repo, fake_submod_cb, NULL));
  
  	git_submodule_free(sm);
  }
  
  void test_submodule_nosubs__bad_gitmodules(void)
  {
  	git_repository *repo = cl_git_sandbox_init("status");
  
  	cl_git_mkfile("status/.gitmodules", "[submodule \"foobar\"]\tpath=blargle\n\turl=\n\tbranch=\n\tupdate=flooble\n\n");
  
  	cl_git_rewritefile("status/.gitmodules", "[submodule \"foobar\"]\tpath=blargle\n\turl=\n\tbranch=\n\tupdate=rebase\n\n");
  
  	cl_git_pass(git_submodule_lookup(NULL, repo, "foobar"));
  	cl_assert_equal_i(GIT_ENOTFOUND, git_submodule_lookup(NULL, repo, "subdir"));
  }
  
  void test_submodule_nosubs__add_and_delete(void)
  {
  	git_repository *repo = cl_git_sandbox_init("status");
  	git_submodule *sm;
  	git_str buf = GIT_STR_INIT;
  
  	cl_git_fail(git_submodule_lookup(NULL, repo, "libgit2"));
  	cl_git_fail(git_submodule_lookup(NULL, repo, "submodules/libgit2"));
  
  	/* create */
  
  	cl_git_pass(git_submodule_add_setup(
  		&sm, repo, "https://github.com/libgit2/libgit2.git", "submodules/libgit2", 1));
  	cl_assert_equal_s("submodules/libgit2", git_submodule_name(sm));
  	cl_assert_equal_s("submodules/libgit2", git_submodule_path(sm));
  	git_submodule_free(sm);
  
  	cl_git_pass(git_futils_readbuffer(&buf, "status/.gitmodules"));
  	cl_assert(strstr(buf.ptr, "[submodule \"submodules/libgit2\"]") != NULL);
  	cl_assert(strstr(buf.ptr, "path = submodules/libgit2") != NULL);
  	git_str_dispose(&buf);
  
  	/* lookup */
  
  	cl_git_fail(git_submodule_lookup(&sm, repo, "libgit2"));
  	cl_git_pass(git_submodule_lookup(&sm, repo, "submodules/libgit2"));
  	cl_assert_equal_s("submodules/libgit2", git_submodule_name(sm));
  	cl_assert_equal_s("submodules/libgit2", git_submodule_path(sm));
  	git_submodule_free(sm);
  
  	/* update name */
  
  	cl_git_rewritefile(
  		"status/.gitmodules",
  		"[submodule \"libgit2\"]\n"
  		"  path = submodules/libgit2\n"
  		"  url = https://github.com/libgit2/libgit2.git\n");
  
  	cl_git_pass(git_submodule_lookup(&sm, repo, "libgit2"));
  	cl_assert_equal_s("libgit2", git_submodule_name(sm));
  	cl_assert_equal_s("submodules/libgit2", git_submodule_path(sm));
  	git_submodule_free(sm);
  	cl_git_pass(git_submodule_lookup(&sm, repo, "submodules/libgit2"));
  	git_submodule_free(sm);
  
  	/* revert name update */
  
  	cl_git_rewritefile(
  		"status/.gitmodules",
  		"[submodule \"submodules/libgit2\"]\n"
  		"  path = submodules/libgit2\n"
  		"  url = https://github.com/libgit2/libgit2.git\n");
  
  	cl_git_fail(git_submodule_lookup(&sm, repo, "libgit2"));
  	cl_git_pass(git_submodule_lookup(&sm, repo, "submodules/libgit2"));
  	git_submodule_free(sm);
  
  	/* remove completely */
  
  	cl_must_pass(p_unlink("status/.gitmodules"));
  	cl_git_fail(git_submodule_lookup(&sm, repo, "libgit2"));
  	cl_git_fail(git_submodule_lookup(&sm, repo, "submodules/libgit2"));
  }
  

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