thodg/libgit2/tests/util/str/oom.c

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• Hash : e6d93612
  Author :
  Date : 2021-11-16T23:59:43
  

  refactor: move utility tests into util

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• tests/util/str/oom.c

• #include "clar_libgit2.h"
  
  /* Override default allocators with ones that will fail predictably. */
  
  static git_allocator std_alloc;
  static git_allocator oom_alloc;
  
  static void *oom_malloc(size_t n, const char *file, int line)
  {
  	/* Reject any allocation of more than 100 bytes */
  	return (n > 100) ? NULL : std_alloc.gmalloc(n, file, line);
  }
  
  static void *oom_realloc(void *p, size_t n, const char *file, int line)
  {
  	/* Reject any allocation of more than 100 bytes */
  	return (n > 100) ? NULL : std_alloc.grealloc(p, n, file, line);
  }
  
  void test_str_oom__initialize(void)
  {
  	git_stdalloc_init_allocator(&std_alloc);
  	git_stdalloc_init_allocator(&oom_alloc);
  
  	oom_alloc.gmalloc = oom_malloc;
  	oom_alloc.grealloc = oom_realloc;
  
  	cl_git_pass(git_allocator_setup(&oom_alloc));
  }
  
  void test_str_oom__cleanup(void)
  {
  	cl_git_pass(git_allocator_setup(NULL));
  }
  
  void test_str_oom__grow(void)
  {
  	git_str buf = GIT_STR_INIT;
  
  	cl_git_pass(git_str_grow(&buf, 42));
  	cl_assert(!git_str_oom(&buf));
  
  	cl_assert(git_str_grow(&buf, 101) == -1);
  	cl_assert(git_str_oom(&buf));
  
  	git_str_dispose(&buf);
  }
  
  void test_str_oom__grow_by(void)
  {
  	git_str buf = GIT_STR_INIT;
  
  	cl_git_pass(git_str_grow_by(&buf, 42));
  	cl_assert(!git_str_oom(&buf));
  
  	cl_assert(git_str_grow_by(&buf, 101) == -1);
  	cl_assert(git_str_oom(&buf));
  }
  

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