thodg/libgit2/tests/core/env.c

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• Hash : 410855fc
  Author :
  Date : 2016-12-17T18:18:30
  

  sysdir: add failing test for variable substitution When given $PATH as part of a search path, we guess again instead of substituting what the user already set.

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• tests/core/env.c

• #include "clar_libgit2.h"
  #include "fileops.h"
  #include "sysdir.h"
  #include "path.h"
  
  #ifdef GIT_WIN32
  #define NUM_VARS 5
  static const char *env_vars[NUM_VARS] = {
  	"HOME", "HOMEDRIVE", "HOMEPATH", "USERPROFILE", "PROGRAMFILES"
  };
  #else
  #define NUM_VARS 1
  static const char *env_vars[NUM_VARS] = { "HOME" };
  #endif
  
  static char *env_save[NUM_VARS];
  
  static char *home_values[] = {
  	"fake_home",
  	"f\xc3\xa1ke_h\xc3\xb5me", /* all in latin-1 supplement */
  	"f\xc4\x80ke_\xc4\xa4ome", /* latin extended */
  	"f\xce\xb1\xce\xba\xce\xb5_h\xce\xbfm\xce\xad",  /* having fun with greek */
  	"fa\xe0" "\xb8" "\x87" "e_\xe0" "\xb8" "\x99" "ome", /* thai characters */
  	"f\xe1\x9c\x80ke_\xe1\x9c\x91ome", /* tagalog characters */
  	"\xe1\xb8\x9f\xe1\xba\xa2" "ke_ho" "\xe1" "\xb9" "\x81" "e", /* latin extended additional */
  	"\xf0\x9f\x98\x98\xf0\x9f\x98\x82", /* emoticons */
  	NULL
  };
  
  void test_core_env__initialize(void)
  {
  	int i;
  	for (i = 0; i < NUM_VARS; ++i)
  		env_save[i] = cl_getenv(env_vars[i]);
  }
  
  static void set_global_search_path_from_env(void)
  {
  	cl_git_pass(git_sysdir_set(GIT_SYSDIR_GLOBAL, NULL));
  }
  
  static void set_system_search_path_from_env(void)
  {
  	cl_git_pass(git_sysdir_set(GIT_SYSDIR_SYSTEM, NULL));
  }
  
  void test_core_env__cleanup(void)
  {
  	int i;
  	char **val;
  
  	for (i = 0; i < NUM_VARS; ++i) {
  		cl_setenv(env_vars[i], env_save[i]);
  		git__free(env_save[i]);
  		env_save[i] = NULL;
  	}
  
  	/* these will probably have already been cleaned up, but if a test
  	 * fails, then it's probably good to try and clear out these dirs
  	 */
  	for (val = home_values; *val != NULL; val++) {
  		if (**val != '\0')
  			(void)p_rmdir(*val);
  	}
  
  	cl_sandbox_set_search_path_defaults();
  }
  
  static void setenv_and_check(const char *name, const char *value)
  {
  	char *check;
  
  	cl_git_pass(cl_setenv(name, value));
  	check = cl_getenv(name);
  
  	if (value)
  		cl_assert_equal_s(value, check);
  	else
  		cl_assert(check == NULL);
  
  	git__free(check);
  }
  
  void test_core_env__0(void)
  {
  	git_buf path = GIT_BUF_INIT, found = GIT_BUF_INIT;
  	char testfile[16], tidx = '0';
  	char **val;
  	const char *testname = "testfile";
  	size_t testlen = strlen(testname);
  
  	strncpy(testfile, testname, sizeof(testfile));
  	cl_assert_equal_s(testname, testfile);
  
  	for (val = home_values; *val != NULL; val++) {
  
  		/* if we can't make the directory, let's just assume
  		 * we are on a filesystem that doesn't support the
  		 * characters in question and skip this test...
  		 */
  		if (p_mkdir(*val, 0777) != 0) {
  			*val = ""; /* mark as not created */
  			continue;
  		}
  
  		cl_git_pass(git_path_prettify(&path, *val, NULL));
  
  		/* vary testfile name in each directory so accidentally leaving
  		 * an environment variable set from a previous iteration won't
  		 * accidentally make this test pass...
  		 */
  		testfile[testlen] = tidx++;
  		cl_git_pass(git_buf_joinpath(&path, path.ptr, testfile));
  		cl_git_mkfile(path.ptr, "find me");
  		git_buf_rtruncate_at_char(&path, '/');
  
  		cl_assert_equal_i(
  			GIT_ENOTFOUND, git_sysdir_find_global_file(&found, testfile));
  
  		setenv_and_check("HOME", path.ptr);
  		set_global_search_path_from_env();
  
  		cl_git_pass(git_sysdir_find_global_file(&found, testfile));
  
  		cl_setenv("HOME", env_save[0]);
  		set_global_search_path_from_env();
  
  		cl_assert_equal_i(
  			GIT_ENOTFOUND, git_sysdir_find_global_file(&found, testfile));
  
  #ifdef GIT_WIN32
  		setenv_and_check("HOMEDRIVE", NULL);
  		setenv_and_check("HOMEPATH", NULL);
  		setenv_and_check("USERPROFILE", path.ptr);
  		set_global_search_path_from_env();
  
  		cl_git_pass(git_sysdir_find_global_file(&found, testfile));
  
  		{
  			int root = git_path_root(path.ptr);
  			char old;
  
  			if (root >= 0) {
  				setenv_and_check("USERPROFILE", NULL);
  				set_global_search_path_from_env();
  
  				cl_assert_equal_i(
  					GIT_ENOTFOUND, git_sysdir_find_global_file(&found, testfile));
  
  				old = path.ptr[root];
  				path.ptr[root] = '\0';
  				setenv_and_check("HOMEDRIVE", path.ptr);
  				path.ptr[root] = old;
  				setenv_and_check("HOMEPATH", &path.ptr[root]);
  				set_global_search_path_from_env();
  
  				cl_git_pass(git_sysdir_find_global_file(&found, testfile));
  			}
  		}
  #endif
  
  		(void)p_rmdir(*val);
  	}
  
  	git_buf_free(&path);
  	git_buf_free(&found);
  }
  
  
  void test_core_env__1(void)
  {
  	git_buf path = GIT_BUF_INIT;
  
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_global_file(&path, "nonexistentfile"));
  
  	cl_git_pass(cl_setenv("HOME", "doesnotexist"));
  #ifdef GIT_WIN32
  	cl_git_pass(cl_setenv("HOMEPATH", "doesnotexist"));
  	cl_git_pass(cl_setenv("USERPROFILE", "doesnotexist"));
  #endif
  	set_global_search_path_from_env();
  
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_global_file(&path, "nonexistentfile"));
  
  	cl_git_pass(cl_setenv("HOME", NULL));
  #ifdef GIT_WIN32
  	cl_git_pass(cl_setenv("HOMEPATH", NULL));
  	cl_git_pass(cl_setenv("USERPROFILE", NULL));
  #endif
  	set_global_search_path_from_env();
  	set_system_search_path_from_env();
  
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_global_file(&path, "nonexistentfile"));
  
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_system_file(&path, "nonexistentfile"));
  
  #ifdef GIT_WIN32
  	cl_git_pass(cl_setenv("PROGRAMFILES", NULL));
  	set_system_search_path_from_env();
  
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_system_file(&path, "nonexistentfile"));
  #endif
  
  	git_buf_free(&path);
  }
  
  static void check_global_searchpath(
  	const char *path, int position, const char *file, git_buf *temp)
  {
  	git_buf out = GIT_BUF_INIT;
  
  	/* build and set new path */
  	if (position < 0)
  		cl_git_pass(git_buf_join(temp, GIT_PATH_LIST_SEPARATOR, path, "$PATH"));
  	else if (position > 0)
  		cl_git_pass(git_buf_join(temp, GIT_PATH_LIST_SEPARATOR, "$PATH", path));
  	else
  		cl_git_pass(git_buf_sets(temp, path));
  
  	cl_git_pass(git_libgit2_opts(
  		GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, temp->ptr));
  
  	/* get path and make sure $PATH expansion worked */
  	cl_git_pass(git_libgit2_opts(
  		GIT_OPT_GET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, &out));
  
  	if (position < 0)
  		cl_assert(git__prefixcmp(out.ptr, path) == 0);
  	else if (position > 0)
  		cl_assert(git__suffixcmp(out.ptr, path) == 0);
  	else
  		cl_assert_equal_s(out.ptr, path);
  
  	/* find file using new path */
  	cl_git_pass(git_sysdir_find_global_file(temp, file));
  
  	/* reset path and confirm file not found */
  	cl_git_pass(git_libgit2_opts(
  		GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, NULL));
  	cl_assert_equal_i(
  		GIT_ENOTFOUND, git_sysdir_find_global_file(temp, file));
  
  	git_buf_free(&out);
  }
  
  void test_core_env__2(void)
  {
  	git_buf path = GIT_BUF_INIT, found = GIT_BUF_INIT;
  	char testfile[16], tidx = '0';
  	char **val;
  	const char *testname = "alternate";
  	size_t testlen = strlen(testname);
  
  	strncpy(testfile, testname, sizeof(testfile));
  	cl_assert_equal_s(testname, testfile);
  
  	for (val = home_values; *val != NULL; val++) {
  
  		/* if we can't make the directory, let's just assume
  		 * we are on a filesystem that doesn't support the
  		 * characters in question and skip this test...
  		 */
  		if (p_mkdir(*val, 0777) != 0 && errno != EEXIST) {
  			*val = ""; /* mark as not created */
  			continue;
  		}
  
  		cl_git_pass(git_path_prettify(&path, *val, NULL));
  
  		/* vary testfile name so any sloppiness is resetting variables or
  		 * deleting files won't accidentally make a test pass.
  		 */
  		testfile[testlen] = tidx++;
  		cl_git_pass(git_buf_joinpath(&path, path.ptr, testfile));
  		cl_git_mkfile(path.ptr, "find me");
  		git_buf_rtruncate_at_char(&path, '/');
  
  		/* default should be NOTFOUND */
  		cl_assert_equal_i(
  			GIT_ENOTFOUND, git_sysdir_find_global_file(&found, testfile));
  
  		/* try plain, append $PATH, and prepend $PATH */
  		check_global_searchpath(path.ptr,  0, testfile, &found);
  		check_global_searchpath(path.ptr, -1, testfile, &found);
  		check_global_searchpath(path.ptr,  1, testfile, &found);
  
  		/* cleanup */
  		cl_git_pass(git_buf_joinpath(&path, path.ptr, testfile));
  		(void)p_unlink(path.ptr);
  		(void)p_rmdir(*val);
  	}
  
  	git_buf_free(&path);
  	git_buf_free(&found);
  }
  
  void test_core_env__substitution(void)
  {
    git_buf buf = GIT_BUF_INIT, expected = GIT_BUF_INIT;
  
    /* Set it to something non-default so we have controllable values */
    cl_git_pass(git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, "/tmp/a"));
    cl_git_pass(git_libgit2_opts(GIT_OPT_GET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, &buf));
    cl_assert_equal_s("/tmp/a", buf.ptr);
  
    git_buf_clear(&buf);
    cl_git_pass(git_buf_join(&buf, GIT_PATH_LIST_SEPARATOR, "$PATH", "/tmp/b"));
    cl_git_pass(git_libgit2_opts(GIT_OPT_SET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, buf.ptr));
    cl_git_pass(git_libgit2_opts(GIT_OPT_GET_SEARCH_PATH, GIT_CONFIG_LEVEL_GLOBAL, &buf));
  
    cl_git_pass(git_buf_join(&expected, GIT_PATH_LIST_SEPARATOR, "/tmp/a", "/tmp/b"));
    cl_assert_equal_s(expected.ptr, buf.ptr);
  
    git_buf_free(&expected);
    git_buf_free(&buf);
  }
  

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