thodg/libgit2/tests/buf/basic.c

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• Hash : 4aa664ae
  Author :
  Date : 2015-02-10T23:55:07
  

  git_buf_grow_by: increase buf asize incrementally Introduce `git_buf_grow_by` to incrementally increase the size of a `git_buf`, performing an overflow calculation on the growth.

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• tests/buf/basic.c

• #include "clar_libgit2.h"
  #include "buffer.h"
  
  static const char *test_string = "Have you seen that? Have you seeeen that??";
  
  void test_buf_basic__resize(void)
  {
  	git_buf buf1 = GIT_BUF_INIT;
  	git_buf_puts(&buf1, test_string);
  	cl_assert(git_buf_oom(&buf1) == 0);
  	cl_assert_equal_s(git_buf_cstr(&buf1), test_string);
  
  	git_buf_puts(&buf1, test_string);
  	cl_assert(strlen(git_buf_cstr(&buf1)) == strlen(test_string) * 2);
  	git_buf_free(&buf1);
  }
  
  void test_buf_basic__resize_incremental(void)
  {
  	git_buf buf1 = GIT_BUF_INIT;
  
  	/* Presently, asking for 6 bytes will round up to 8. */
  	cl_git_pass(git_buf_puts(&buf1, "Hello"));
  	cl_assert_equal_i(5, buf1.size);
  	cl_assert_equal_i(8, buf1.asize);
  
  	/* Ensure an additional byte does not realloc. */
  	cl_git_pass(git_buf_grow_by(&buf1, 1));
  	cl_assert_equal_i(5, buf1.size);
  	cl_assert_equal_i(8, buf1.asize);
  
  	/* But requesting many does. */
  	cl_git_pass(git_buf_grow_by(&buf1, 16));
  	cl_assert_equal_i(5, buf1.size);
  	cl_assert(buf1.asize > 8);
  }
  
  void test_buf_basic__printf(void)
  {
  	git_buf buf2 = GIT_BUF_INIT;
  	git_buf_printf(&buf2, "%s %s %d ", "shoop", "da", 23);
  	cl_assert(git_buf_oom(&buf2) == 0);
  	cl_assert_equal_s(git_buf_cstr(&buf2), "shoop da 23 ");
  
  	git_buf_printf(&buf2, "%s %d", "woop", 42);
  	cl_assert(git_buf_oom(&buf2) == 0);
  	cl_assert_equal_s(git_buf_cstr(&buf2), "shoop da 23 woop 42");
  	git_buf_free(&buf2);
  }
  

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