thodg/libgit2/tests-clay/clay_main.c

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• Hash : 40e73d6f
  Author :
  Date : 2011-12-09T01:38:46
  

  Merge remote-tracking branch 'arrbee/git-buf-for-paths' into development Conflicts: tests-clay/clay_main.c

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• tests-clay/clay_main.c

• #include <assert.h>
  #include <setjmp.h>
  #include <stdlib.h>
  #include <stdio.h>
  #include <string.h>
  #include <math.h>
  #include <stdarg.h>
  
  /* required for sandboxing */
  #include <sys/types.h>
  #include <sys/stat.h>
  
  #ifdef _WIN32
  #	include <windows.h>
  #	include <io.h>
  #	include <shellapi.h>
  #	include <direct.h>
  
  #	define _MAIN_CC __cdecl
  
  #	define stat(path, st) _stat(path, st)
  #	define mkdir(path, mode) _mkdir(path)
  #	define chdir(path) _chdir(path)
  #	define access(path, mode) _access(path, mode)
  #	define strdup(str) _strdup(str)
  
  #	ifndef __MINGW32__
  #		pragma comment(lib, "shell32")
  #		define strncpy(to, from, to_size) strncpy_s(to, to_size, from, _TRUNCATE)
  #		define W_OK 02
  #		define S_ISDIR(x) ((x & _S_IFDIR) != 0)
  #		define mktemp_s(path, len) _mktemp_s(path, len)
  #	endif
  	typedef struct _stat STAT_T;
  #else
  #	include <sys/wait.h> /* waitpid(2) */
  #	include <unistd.h>
  #	define _MAIN_CC
  	typedef struct stat STAT_T;
  #endif
  
  #include "clay.h"
  
  static void fs_rm(const char *_source);
  static void fs_copy(const char *_source, const char *dest);
  
  static const char *
  fixture_path(const char *base, const char *fixture_name);
  
  struct clay_error {
  	const char *test;
  	int test_number;
  	const char *suite;
  	const char *file;
  	int line_number;
  	const char *error_msg;
  	char *description;
  
  	struct clay_error *next;
  };
  
  static struct {
  	const char *active_test;
  	const char *active_suite;
  
  	int suite_errors;
  	int total_errors;
  
  	int test_count;
  
  	struct clay_error *errors;
  	struct clay_error *last_error;
  
  	void (*local_cleanup)(void *);
  	void *local_cleanup_payload;
  
  	jmp_buf trampoline;
  	int trampoline_enabled;
  } _clay;
  
  struct clay_func {
  	const char *name;
  	void (*ptr)(void);
  };
  
  struct clay_suite {
  	const char *name;
  	struct clay_func initialize;
  	struct clay_func cleanup;
  	const struct clay_func *tests;
  	size_t test_count;
  };
  
  /* From clay_print_*.c */
  static void clay_print_init(int test_count, int suite_count, const char *suite_names);
  static void clay_print_shutdown(int test_count, int suite_count, int error_count);
  static void clay_print_error(int num, const struct clay_error *error);
  static void clay_print_ontest(const char *test_name, int test_number, int failed);
  static void clay_print_onsuite(const char *suite_name);
  static void clay_print_onabort(const char *msg, ...);
  
  /* From clay_sandbox.c */
  static void clay_unsandbox(void);
  static int clay_sandbox(void);
  
  /* Autogenerated test data by clay */
  static const struct clay_func _clay_cb_buf_basic[] = {
      {"printf", &test_buf_basic__printf},
  	{"resize", &test_buf_basic__resize}
  };
  static const struct clay_func _clay_cb_config_add[] = {
      {"to_existing_section", &test_config_add__to_existing_section},
  	{"to_new_section", &test_config_add__to_new_section}
  };
  static const struct clay_func _clay_cb_config_new[] = {
      {"write_new_config", &test_config_new__write_new_config}
  };
  static const struct clay_func _clay_cb_config_read[] = {
      {"blank_lines", &test_config_read__blank_lines},
  	{"case_sensitive", &test_config_read__case_sensitive},
  	{"empty_files", &test_config_read__empty_files},
  	{"header_in_last_line", &test_config_read__header_in_last_line},
  	{"invalid_ext_headers", &test_config_read__invalid_ext_headers},
  	{"lone_variable", &test_config_read__lone_variable},
  	{"multiline_value", &test_config_read__multiline_value},
  	{"number_suffixes", &test_config_read__number_suffixes},
  	{"prefixes", &test_config_read__prefixes},
  	{"simple_read", &test_config_read__simple_read},
  	{"subsection_header", &test_config_read__subsection_header}
  };
  static const struct clay_func _clay_cb_config_stress[] = {
      {"dont_break_on_invalid_input", &test_config_stress__dont_break_on_invalid_input}
  };
  static const struct clay_func _clay_cb_config_write[] = {
      {"delete_inexistent", &test_config_write__delete_inexistent},
  	{"delete_value", &test_config_write__delete_value},
  	{"replace_value", &test_config_write__replace_value}
  };
  static const struct clay_func _clay_cb_core_buffer[] = {
      {"0", &test_core_buffer__0},
  	{"1", &test_core_buffer__1},
  	{"2", &test_core_buffer__2},
  	{"3", &test_core_buffer__3},
  	{"4", &test_core_buffer__4},
  	{"5", &test_core_buffer__5},
  	{"6", &test_core_buffer__6},
  	{"7", &test_core_buffer__7},
  	{"8", &test_core_buffer__8},
  	{"9", &test_core_buffer__9}
  };
  static const struct clay_func _clay_cb_core_dirent[] = {
      {"dont_traverse_dot", &test_core_dirent__dont_traverse_dot},
  	{"dont_traverse_empty_folders", &test_core_dirent__dont_traverse_empty_folders},
  	{"traverse_slash_terminated_folder", &test_core_dirent__traverse_slash_terminated_folder},
  	{"traverse_subfolder", &test_core_dirent__traverse_subfolder},
  	{"traverse_weird_filenames", &test_core_dirent__traverse_weird_filenames}
  };
  static const struct clay_func _clay_cb_core_filebuf[] = {
      {"0", &test_core_filebuf__0},
  	{"1", &test_core_filebuf__1},
  	{"2", &test_core_filebuf__2},
  	{"3", &test_core_filebuf__3},
  	{"4", &test_core_filebuf__4},
  	{"5", &test_core_filebuf__5}
  };
  static const struct clay_func _clay_cb_core_oid[] = {
      {"streq", &test_core_oid__streq}
  };
  static const struct clay_func _clay_cb_core_path[] = {
      {"0", &test_core_path__0},
  	{"1", &test_core_path__1},
  	{"2", &test_core_path__2},
  	{"5", &test_core_path__5},
  	{"6", &test_core_path__6},
  	{"7", &test_core_path__7}
  };
  static const struct clay_func _clay_cb_core_rmdir[] = {
      {"delete_recursive", &test_core_rmdir__delete_recursive},
  	{"fail_to_delete_non_empty_dir", &test_core_rmdir__fail_to_delete_non_empty_dir}
  };
  static const struct clay_func _clay_cb_core_string[] = {
      {"0", &test_core_string__0},
  	{"1", &test_core_string__1}
  };
  static const struct clay_func _clay_cb_core_strtol[] = {
      {"int32", &test_core_strtol__int32},
  	{"int64", &test_core_strtol__int64}
  };
  static const struct clay_func _clay_cb_core_vector[] = {
      {"0", &test_core_vector__0},
  	{"1", &test_core_vector__1},
  	{"2", &test_core_vector__2}
  };
  static const struct clay_func _clay_cb_index_rename[] = {
      {"single_file", &test_index_rename__single_file}
  };
  static const struct clay_func _clay_cb_network_remotes[] = {
      {"fnmatch", &test_network_remotes__fnmatch},
  	{"parsing", &test_network_remotes__parsing},
  	{"refspec_parsing", &test_network_remotes__refspec_parsing},
  	{"transform", &test_network_remotes__transform}
  };
  static const struct clay_func _clay_cb_object_raw_chars[] = {
      {"build_valid_oid_from_raw_bytes", &test_object_raw_chars__build_valid_oid_from_raw_bytes},
  	{"find_invalid_chars_in_oid", &test_object_raw_chars__find_invalid_chars_in_oid}
  };
  static const struct clay_func _clay_cb_object_raw_compare[] = {
      {"compare_allocfmt_oids", &test_object_raw_compare__compare_allocfmt_oids},
  	{"compare_fmt_oids", &test_object_raw_compare__compare_fmt_oids},
  	{"compare_pathfmt_oids", &test_object_raw_compare__compare_pathfmt_oids},
  	{"succeed_on_copy_oid", &test_object_raw_compare__succeed_on_copy_oid},
  	{"succeed_on_oid_comparison_equal", &test_object_raw_compare__succeed_on_oid_comparison_equal},
  	{"succeed_on_oid_comparison_greater", &test_object_raw_compare__succeed_on_oid_comparison_greater},
  	{"succeed_on_oid_comparison_lesser", &test_object_raw_compare__succeed_on_oid_comparison_lesser}
  };
  static const struct clay_func _clay_cb_object_raw_convert[] = {
      {"succeed_on_oid_to_string_conversion", &test_object_raw_convert__succeed_on_oid_to_string_conversion},
  	{"succeed_on_oid_to_string_conversion_big", &test_object_raw_convert__succeed_on_oid_to_string_conversion_big}
  };
  static const struct clay_func _clay_cb_object_raw_fromstr[] = {
      {"fail_on_invalid_oid_string", &test_object_raw_fromstr__fail_on_invalid_oid_string},
  	{"succeed_on_valid_oid_string", &test_object_raw_fromstr__succeed_on_valid_oid_string}
  };
  static const struct clay_func _clay_cb_object_raw_hash[] = {
      {"hash_buffer_in_single_call", &test_object_raw_hash__hash_buffer_in_single_call},
  	{"hash_by_blocks", &test_object_raw_hash__hash_by_blocks},
  	{"hash_commit_object", &test_object_raw_hash__hash_commit_object},
  	{"hash_junk_data", &test_object_raw_hash__hash_junk_data},
  	{"hash_multi_byte_object", &test_object_raw_hash__hash_multi_byte_object},
  	{"hash_one_byte_object", &test_object_raw_hash__hash_one_byte_object},
  	{"hash_tag_object", &test_object_raw_hash__hash_tag_object},
  	{"hash_tree_object", &test_object_raw_hash__hash_tree_object},
  	{"hash_two_byte_object", &test_object_raw_hash__hash_two_byte_object},
  	{"hash_vector", &test_object_raw_hash__hash_vector},
  	{"hash_zero_length_object", &test_object_raw_hash__hash_zero_length_object}
  };
  static const struct clay_func _clay_cb_object_raw_short[] = {
      {"oid_shortener_no_duplicates", &test_object_raw_short__oid_shortener_no_duplicates},
  	{"oid_shortener_stresstest_git_oid_shorten", &test_object_raw_short__oid_shortener_stresstest_git_oid_shorten}
  };
  static const struct clay_func _clay_cb_object_raw_size[] = {
      {"validate_oid_size", &test_object_raw_size__validate_oid_size}
  };
  static const struct clay_func _clay_cb_object_raw_type2string[] = {
      {"check_type_is_loose", &test_object_raw_type2string__check_type_is_loose},
  	{"convert_string_to_type", &test_object_raw_type2string__convert_string_to_type},
  	{"convert_type_to_string", &test_object_raw_type2string__convert_type_to_string}
  };
  static const struct clay_func _clay_cb_object_tree_diff[] = {
      {"addition", &test_object_tree_diff__addition},
  	{"deletion", &test_object_tree_diff__deletion},
  	{"modification", &test_object_tree_diff__modification},
  	{"more", &test_object_tree_diff__more}
  };
  static const struct clay_func _clay_cb_object_tree_frompath[] = {
      {"fail_when_processing_an_invalid_path", &test_object_tree_frompath__fail_when_processing_an_invalid_path},
  	{"fail_when_processing_an_unknown_tree_segment", &test_object_tree_frompath__fail_when_processing_an_unknown_tree_segment},
  	{"retrieve_tree_from_path_to_treeentry", &test_object_tree_frompath__retrieve_tree_from_path_to_treeentry}
  };
  static const struct clay_func _clay_cb_odb_loose[] = {
      {"exists", &test_odb_loose__exists},
  	{"simple_reads", &test_odb_loose__simple_reads}
  };
  static const struct clay_func _clay_cb_odb_packed[] = {
      {"mass_read", &test_odb_packed__mass_read},
  	{"read_header_0", &test_odb_packed__read_header_0},
  	{"read_header_1", &test_odb_packed__read_header_1}
  };
  static const struct clay_func _clay_cb_odb_sorting[] = {
      {"alternate_backends_sorting", &test_odb_sorting__alternate_backends_sorting},
  	{"basic_backends_sorting", &test_odb_sorting__basic_backends_sorting}
  };
  static const struct clay_func _clay_cb_repo_getters[] = {
      {"empty", &test_repo_getters__empty},
  	{"head_detached", &test_repo_getters__head_detached},
  	{"head_orphan", &test_repo_getters__head_orphan}
  };
  static const struct clay_func _clay_cb_repo_init[] = {
      {"bare_repo", &test_repo_init__bare_repo},
  	{"bare_repo_noslash", &test_repo_init__bare_repo_noslash},
  	{"standard_repo", &test_repo_init__standard_repo},
  	{"standard_repo_noslash", &test_repo_init__standard_repo_noslash}
  };
  static const struct clay_func _clay_cb_repo_open[] = {
      {"bare_empty_repo", &test_repo_open__bare_empty_repo},
  	{"standard_empty_repo", &test_repo_open__standard_empty_repo}
  };
  static const struct clay_func _clay_cb_status_single[] = {
      {"hash_single_file", &test_status_single__hash_single_file}
  };
  static const struct clay_func _clay_cb_status_worktree[] = {
      {"empty_repository", &test_status_worktree__empty_repository},
  	{"whole_repository", &test_status_worktree__whole_repository}
  };
  
  static const struct clay_suite _clay_suites[] = {
      {
          "buf::basic",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_buf_basic, 2
      },
  	{
          "config::add",
          {"initialize", &test_config_add__initialize},
          {"cleanup", &test_config_add__cleanup},
          _clay_cb_config_add, 2
      },
  	{
          "config::new",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_config_new, 1
      },
  	{
          "config::read",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_config_read, 11
      },
  	{
          "config::stress",
          {"initialize", &test_config_stress__initialize},
          {"cleanup", &test_config_stress__cleanup},
          _clay_cb_config_stress, 1
      },
  	{
          "config::write",
          {"initialize", &test_config_write__initialize},
          {"cleanup", &test_config_write__cleanup},
          _clay_cb_config_write, 3
      },
  	{
          "core::buffer",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_buffer, 10
      },
  	{
          "core::dirent",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_dirent, 5
      },
  	{
          "core::filebuf",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_filebuf, 6
      },
  	{
          "core::oid",
          {"initialize", &test_core_oid__initialize},
          {NULL, NULL},
          _clay_cb_core_oid, 1
      },
  	{
          "core::path",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_path, 6
      },
  	{
          "core::rmdir",
          {"initialize", &test_core_rmdir__initialize},
          {NULL, NULL},
          _clay_cb_core_rmdir, 2
      },
  	{
          "core::string",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_string, 2
      },
  	{
          "core::strtol",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_strtol, 2
      },
  	{
          "core::vector",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_core_vector, 3
      },
  	{
          "index::rename",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_index_rename, 1
      },
  	{
          "network::remotes",
          {"initialize", &test_network_remotes__initialize},
          {"cleanup", &test_network_remotes__cleanup},
          _clay_cb_network_remotes, 4
      },
  	{
          "object::raw::chars",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_chars, 2
      },
  	{
          "object::raw::compare",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_compare, 7
      },
  	{
          "object::raw::convert",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_convert, 2
      },
  	{
          "object::raw::fromstr",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_fromstr, 2
      },
  	{
          "object::raw::hash",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_hash, 11
      },
  	{
          "object::raw::short",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_short, 2
      },
  	{
          "object::raw::size",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_size, 1
      },
  	{
          "object::raw::type2string",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_object_raw_type2string, 3
      },
  	{
          "object::tree::diff",
          {"initialize", &test_object_tree_diff__initialize},
          {"cleanup", &test_object_tree_diff__cleanup},
          _clay_cb_object_tree_diff, 4
      },
  	{
          "object::tree::frompath",
          {"initialize", &test_object_tree_frompath__initialize},
          {"cleanup", &test_object_tree_frompath__cleanup},
          _clay_cb_object_tree_frompath, 3
      },
  	{
          "odb::loose",
          {"initialize", &test_odb_loose__initialize},
          {"cleanup", &test_odb_loose__cleanup},
          _clay_cb_odb_loose, 2
      },
  	{
          "odb::packed",
          {"initialize", &test_odb_packed__initialize},
          {"cleanup", &test_odb_packed__cleanup},
          _clay_cb_odb_packed, 3
      },
  	{
          "odb::sorting",
          {"initialize", &test_odb_sorting__initialize},
          {"cleanup", &test_odb_sorting__cleanup},
          _clay_cb_odb_sorting, 2
      },
  	{
          "repo::getters",
          {"initialize", &test_repo_getters__initialize},
          {"cleanup", &test_repo_getters__cleanup},
          _clay_cb_repo_getters, 3
      },
  	{
          "repo::init",
          {"initialize", &test_repo_init__initialize},
          {NULL, NULL},
          _clay_cb_repo_init, 4
      },
  	{
          "repo::open",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_repo_open, 2
      },
  	{
          "status::single",
          {NULL, NULL},
          {NULL, NULL},
          _clay_cb_status_single, 1
      },
  	{
          "status::worktree",
          {"initialize", &test_status_worktree__initialize},
          {"cleanup", &test_status_worktree__cleanup},
          _clay_cb_status_worktree, 2
      }
  };
  
  static size_t _clay_suite_count = 35;
  static size_t _clay_callback_count = 118;
  
  /* Core test functions */
  static void
  clay_run_test(
  	const struct clay_func *test,
  	const struct clay_func *initialize,
  	const struct clay_func *cleanup)
  {
  	int error_st = _clay.suite_errors;
  
  	_clay.trampoline_enabled = 1;
  
  	if (setjmp(_clay.trampoline) == 0) {
  		if (initialize->ptr != NULL)
  			initialize->ptr();
  
  		test->ptr();
  	}
  
  	_clay.trampoline_enabled = 0;
  
  	if (_clay.local_cleanup != NULL)
  		_clay.local_cleanup(_clay.local_cleanup_payload);
  
  	if (cleanup->ptr != NULL)
  		cleanup->ptr();
  
  	_clay.test_count++;
  
  	/* remove any local-set cleanup methods */
  	_clay.local_cleanup = NULL;
  	_clay.local_cleanup_payload = NULL;
  
  	clay_print_ontest(
  		test->name,
  		_clay.test_count,
  		(_clay.suite_errors > error_st)
  	);
  }
  
  static void
  clay_report_errors(void)
  {
  	int i = 1;
  	struct clay_error *error, *next;
  
  	error = _clay.errors;
  	while (error != NULL) {
  		next = error->next;
  		clay_print_error(i++, error);
  		free(error->description);
  		free(error);
  		error = next;
  	}
  
  	_clay.errors = _clay.last_error = NULL;
  }
  
  static void
  clay_run_suite(const struct clay_suite *suite)
  {
  	const struct clay_func *test = suite->tests;
  	size_t i;
  
  	clay_print_onsuite(suite->name);
  
  	_clay.active_suite = suite->name;
  	_clay.suite_errors = 0;
  
  	for (i = 0; i < suite->test_count; ++i) {
  		_clay.active_test = test[i].name;
  		clay_run_test(&test[i], &suite->initialize, &suite->cleanup);
  	}
  }
  
  #if 0 /* temporarily disabled */
  static void
  clay_run_single(const struct clay_func *test,
  	const struct clay_suite *suite)
  {
  	_clay.suite_errors = 0;
  	_clay.active_suite = suite->name;
  	_clay.active_test = test->name;
  
  	clay_run_test(test, &suite->initialize, &suite->cleanup);
  }
  #endif
  
  static void
  clay_usage(const char *arg)
  {
  	printf("Usage: %s [options]\n\n", arg);
  	printf("Options:\n");
  //	printf("  -tXX\t\tRun only the test number XX\n");
  	printf("  -sXX\t\tRun only the suite number XX\n");
  	exit(-1);
  }
  
  static void
  clay_parse_args(int argc, char **argv)
  {
  	int i;
  
  	for (i = 1; i < argc; ++i) {
  		char *argument = argv[i];
  		char action;
  		int num;
  
  		if (argument[0] != '-')
  			clay_usage(argv[0]);
  
  		action = argument[1];
  		num = strtol(argument + 2, &argument, 10);
  
  		if (*argument != '\0' || num < 0)
  			clay_usage(argv[0]);
  
  		switch (action) {
  		case 's':
  			if ((size_t)num >= _clay_suite_count) {
  				clay_print_onabort("Suite number %d does not exist.\n", num);
  				exit(-1);
  			}
  
  			clay_run_suite(&_clay_suites[num]);
  			break;
  
  		default:
  			clay_usage(argv[0]);
  		}
  	}
  }
  
  static int
  clay_test(int argc, char **argv)
  {
  	clay_print_init(
  		(int)_clay_callback_count,
  		(int)_clay_suite_count,
  		""
  	);
  
  	if (clay_sandbox() < 0) {
  		fprintf(stderr,
  			"Failed to sandbox the test runner.\n"
  			"Testing will proceed without sandboxing.\n");
  	}
  
  	if (argc > 1) {
  		clay_parse_args(argc, argv);
  	} else {
  		size_t i;
  		for (i = 0; i < _clay_suite_count; ++i)
  			clay_run_suite(&_clay_suites[i]);
  	}
  
  	clay_print_shutdown(
  		(int)_clay_callback_count,
  		(int)_clay_suite_count,
  		_clay.total_errors
  	);
  
  	clay_unsandbox();
  	return _clay.total_errors;
  }
  
  void
  clay__assert(
  	int condition,
  	const char *file,
  	int line,
  	const char *error_msg,
  	const char *description,
  	int should_abort)
  {
  	struct clay_error *error;
  
  	if (condition)
  		return;
  
  	error = calloc(1, sizeof(struct clay_error));
  
  	if (_clay.errors == NULL)
  		_clay.errors = error;
  
  	if (_clay.last_error != NULL)
  		_clay.last_error->next = error;
  
  	_clay.last_error = error;
  
  	error->test = _clay.active_test;
  	error->test_number = _clay.test_count;
  	error->suite = _clay.active_suite;
  	error->file = file;
  	error->line_number = line;
  	error->error_msg = error_msg;
  
  	if (description != NULL)
  		error->description = strdup(description);
  
  	_clay.suite_errors++;
  	_clay.total_errors++;
  
  	if (should_abort) {
  		if (!_clay.trampoline_enabled) {
  			clay_print_onabort(
  				"Fatal error: a cleanup method raised an exception.");
  			exit(-1);
  		}
  
  		longjmp(_clay.trampoline, -1);
  	}
  }
  
  void cl_set_cleanup(void (*cleanup)(void *), void *opaque)
  {
  	_clay.local_cleanup = cleanup;
  	_clay.local_cleanup_payload = opaque;
  }
  
  static char _clay_path[4096];
  
  static int
  is_valid_tmp_path(const char *path)
  {
  	STAT_T st;
  
  	if (stat(path, &st) != 0)
  		return 0;
  
  	if (!S_ISDIR(st.st_mode))
  		return 0;
  
  	return (access(path, W_OK) == 0);
  }
  
  static int
  find_tmp_path(char *buffer, size_t length)
  {
  #ifndef _WIN32
  	static const size_t var_count = 4;
  	static const char *env_vars[] = {
  		"TMPDIR", "TMP", "TEMP", "USERPROFILE"
   	};
  
   	size_t i;
  
  	for (i = 0; i < var_count; ++i) {
  		const char *env = getenv(env_vars[i]);
  		if (!env)
  			continue;
  
  		if (is_valid_tmp_path(env)) {
  			strncpy(buffer, env, length);
  			return 0;
  		}
  	}
  
  	/* If the environment doesn't say anything, try to use /tmp */
  	if (is_valid_tmp_path("/tmp")) {
  		strncpy(buffer, "/tmp", length);
  		return 0;
  	}
  
  #else
  	if (GetTempPath((DWORD)length, buffer))
  		return 0;
  #endif
  
  	/* This system doesn't like us, try to use the current directory */
  	if (is_valid_tmp_path(".")) {
  		strncpy(buffer, ".", length);
  		return 0;
  	}
  
  	return -1;
  }
  
  static void clay_unsandbox(void)
  {
  	if (_clay_path[0] == '\0')
  		return;
  
  #ifdef _WIN32
  	chdir("..");
  #endif
  
  	fs_rm(_clay_path);
  }
  
  static int build_sandbox_path(void)
  {
  	const char path_tail[] = "clay_tmp_XXXXXX";
  	size_t len;
  
  	if (find_tmp_path(_clay_path, sizeof(_clay_path)) < 0)
  		return -1;
  
  	len = strlen(_clay_path);
  
  #ifdef _WIN32
  	{ /* normalize path to POSIX forward slashes */
  		size_t i;
  		for (i = 0; i < len; ++i) {
  			if (_clay_path[i] == '\\')
  				_clay_path[i] = '/';
  		}
  	}
  #endif
  
  	if (_clay_path[len - 1] != '/') {
  		_clay_path[len++] = '/';
  	}
  
  	strncpy(_clay_path + len, path_tail, sizeof(_clay_path) - len);
  
  #ifdef _WIN32
  	if (mktemp_s(_clay_path, sizeof(_clay_path)) != 0)
  		return -1;
  
  	if (mkdir(_clay_path, 0700) != 0)
  		return -1;
  #else
  	if (mkdtemp(_clay_path) == NULL)
  		return -1;
  #endif
  
  	return 0;
  }
  
  static int clay_sandbox(void)
  {
  	if (_clay_path[0] == '\0' && build_sandbox_path() < 0)
  		return -1;
  
  	if (chdir(_clay_path) != 0)
  		return -1;
  
  	return 0;
  }
  
  
  static const char *
  fixture_path(const char *base, const char *fixture_name)
  {
  	static char _path[4096];
  	size_t root_len;
  
  	root_len = strlen(base);
  	strncpy(_path, base, sizeof(_path));
  
  	if (_path[root_len - 1] != '/')
  		_path[root_len++] = '/';
  
  	if (fixture_name[0] == '/')
  		fixture_name++;
  
  	strncpy(_path + root_len,
  		fixture_name,
  		sizeof(_path) - root_len);
  
  	return _path;
  }
  
  #ifdef CLAY_FIXTURE_PATH
  const char *cl_fixture(const char *fixture_name)
  {
  	return fixture_path(CLAY_FIXTURE_PATH, fixture_name);
  }
  
  void cl_fixture_sandbox(const char *fixture_name)
  {
  	fs_copy(cl_fixture(fixture_name), _clay_path);
  }
  
  void cl_fixture_cleanup(const char *fixture_name)
  {
  	fs_rm(fixture_path(_clay_path, fixture_name));
  }
  #endif
  
  #ifdef _WIN32
  
  #define FOF_FLAGS (FOF_SILENT | FOF_NOCONFIRMATION | FOF_NOERRORUI | FOF_NOCONFIRMMKDIR)
  
  static char *
  fileops_path(const char *_path)
  {
  	char *path = NULL;
  	size_t length, i;
  
  	if (_path == NULL)
  		return NULL;
  
  	length = strlen(_path);
  	path = malloc(length + 2);
  
  	if (path == NULL)
  		return NULL;
  
  	memcpy(path, _path, length);
  	path[length] = 0;
  	path[length + 1] = 0;
  
  	for (i = 0; i < length; ++i) {
  		if (path[i] == '/')
  			path[i] = '\\';
  	}
  
  	return path;
  }
  
  static void
  fileops(int mode, const char *_source, const char *_dest)
  {
  	SHFILEOPSTRUCT fops;
  
  	char *source = fileops_path(_source);
  	char *dest = fileops_path(_dest);
  
  	ZeroMemory(&fops, sizeof(SHFILEOPSTRUCT));
  
  	fops.wFunc = mode;
  	fops.pFrom = source;
  	fops.pTo = dest;
  	fops.fFlags = FOF_FLAGS;
  
  	cl_assert_(
  		SHFileOperation(&fops) == 0,
  		"Windows SHFileOperation failed"
  	);
  
  	free(source);
  	free(dest);
  }
  
  static void
  fs_rm(const char *_source)
  {
  	fileops(FO_DELETE, _source, NULL);
  }
  
  static void
  fs_copy(const char *_source, const char *_dest)
  {
  	fileops(FO_COPY, _source, _dest);
  }
  
  void
  cl_fs_cleanup(void)
  {
  	fs_rm(fixture_path(_clay_path, "*"));
  }
  
  #else
  static int
  shell_out(char * const argv[])
  {
  	int status;
  	pid_t pid;
  
  	pid = fork();
  
  	if (pid < 0) {
  		fprintf(stderr,
  			"System error: `fork()` call failed.\n");
  		exit(-1);
  	}
  
  	if (pid == 0) {
  		execv(argv[0], argv);
  	}
  
  	waitpid(pid, &status, 0);
  	return WEXITSTATUS(status);
  }
  
  static void
  fs_copy(const char *_source, const char *dest)
  {
  	char *argv[5];
  	char *source;
  	size_t source_len;
  
  	source = strdup(_source);
  	source_len = strlen(source);
  
  	if (source[source_len - 1] == '/')
  		source[source_len - 1] = 0;
  
  	argv[0] = "/bin/cp";
  	argv[1] = "-R";
  	argv[2] = source;
  	argv[3] = (char *)dest;
  	argv[4] = NULL;
  
  	cl_must_pass_(
  		shell_out(argv),
  		"Failed to copy test fixtures to sandbox"
  	);
  
  	free(source);
  }
  
  static void
  fs_rm(const char *source)
  {
  	char *argv[4];
  
  	argv[0] = "/bin/rm";
  	argv[1] = "-Rf";
  	argv[2] = (char *)source;
  	argv[3] = NULL;
  
  	cl_must_pass_(
  		shell_out(argv),
  		"Failed to cleanup the sandbox"
  	);
  }
  
  void
  cl_fs_cleanup(void)
  {
  	clay_unsandbox();
  	clay_sandbox();
  }
  #endif
  
  
  static void clay_print_init(int test_count, int suite_count, const char *suite_names)
  {
  	(void)suite_names;
  	(void)suite_count;
  	printf("TAP version 13\n");
  	printf("1..%d\n", test_count);
  }
  
  static void clay_print_shutdown(int test_count, int suite_count, int error_count)
  {
  	(void)test_count;
  	(void)suite_count;
  	(void)error_count;
  
  	printf("\n");
  }
  
  static void clay_print_error(int num, const struct clay_error *error)
  {
  	(void)num;
  
  	printf("  ---\n");
  	printf("  message : %s\n", error->error_msg);
  	printf("  severity: fail\n");
  	printf("  suite   : %s\n", error->suite);
  	printf("  test    : %s\n", error->test);
  	printf("  file    : %s\n", error->file);
  	printf("  line    : %d\n", error->line_number);
  
  	if (error->description != NULL)
  		printf("  description: %s\n", error->description);
  
  	printf("  ...\n");
  }
  
  static void clay_print_ontest(const char *test_name, int test_number, int failed)
  {
  	printf("%s %d - %s\n",
  		failed ? "not ok" : "ok",
  		test_number,
  		test_name
  	);
  
  	clay_report_errors();
  }
  
  static void clay_print_onsuite(const char *suite_name)
  {
  	printf("# *** %s ***\n", suite_name);
  }
  
  static void clay_print_onabort(const char *msg, ...)
  {
  	va_list argp;
  	va_start(argp, msg);
  	fprintf(stdout, "Bail out! ");
  	vfprintf(stdout, msg, argp);
  	va_end(argp);
  }
  
  
  int _MAIN_CC main(int argc, char *argv[])
  {
      return clay_test(argc, argv);
  }
  

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