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/* GLIB - Library of useful routines for C programming
* Copyright (C) 2010 Ryan Lortie
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <glib.h>
#ifdef G_OS_WIN32
#include <windows.h>
#endif
static void
test_listenv (void)
{
GHashTable *table;
gchar **list;
gint i;
g_test_summary ("Test g_get_environ() returns an array of unique keys, all "
"of which can be individually queried using g_getenv() to "
"return the same value.");
table = g_hash_table_new_full (g_str_hash, g_str_equal,
g_free, g_free);
list = g_get_environ ();
for (i = 0; list[i]; i++)
{
gchar **parts;
parts = g_strsplit (list[i], "=", 2);
g_assert_null (g_hash_table_lookup (table, parts[0]));
if (g_strcmp0 (parts[0], ""))
g_hash_table_insert (table, parts[0], parts[1]);
g_free (parts);
}
g_strfreev (list);
g_assert_cmpint (g_hash_table_size (table), >, 0);
list = g_listenv ();
for (i = 0; list[i]; i++)
{
const gchar *expected;
const gchar *value;
expected = g_hash_table_lookup (table, list[i]);
value = g_getenv (list[i]);
g_assert_cmpstr (value, ==, expected);
g_hash_table_remove (table, list[i]);
}
g_assert_cmpint (g_hash_table_size (table), ==, 0);
g_hash_table_unref (table);
g_strfreev (list);
}
static void
test_getenv (void)
{
const gchar *data;
const gchar *variable = "TEST_G_SETENV";
const gchar *value1 = "works";
const gchar *value2 = "again";
g_test_summary ("Test setting an environment variable using g_setenv(), and "
"that the updated value is queryable using g_getenv().");
/* Check that TEST_G_SETENV is not already set */
g_assert_null (g_getenv (variable));
/* Check if g_setenv() failed */
g_assert_cmpint (g_setenv (variable, value1, TRUE), !=, 0);
data = g_getenv (variable);
g_assert_nonnull (data);
g_assert_cmpstr (data, ==, value1);
g_assert_cmpint (g_setenv (variable, value2, FALSE), !=, 0);
data = g_getenv (variable);
g_assert_nonnull (data);
g_assert_cmpstr (data, !=, value2);
g_assert_cmpstr (data, ==, value1);
g_assert_cmpint (g_setenv (variable, value2, TRUE), !=, 0);
data = g_getenv (variable);
g_assert_nonnull (data);
g_assert_cmpstr (data, !=, value1);
g_assert_cmpstr (data, ==, value2);
g_unsetenv (variable);
g_assert_null (g_getenv (variable));
if (g_test_undefined ())
{
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
g_assert_false (g_setenv (NULL, "baz", TRUE));
g_test_assert_expected_messages ();
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
g_assert_false (g_setenv ("foo", NULL, TRUE));
g_test_assert_expected_messages ();
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* == NULL*");
g_assert_false (g_setenv ("foo=bar", "baz", TRUE));
g_test_assert_expected_messages ();
}
g_assert_true (g_setenv ("foo", "bar=baz", TRUE));
/* Different OSs return different values; some return NULL because the key
* is invalid, but some are happy to return what we set above. */
data = g_getenv ("foo=bar");
if (data != NULL)
g_assert_cmpstr (data, ==, "baz");
else
{
data = g_getenv ("foo");
g_assert_cmpstr (data, ==, "bar=baz");
}
if (g_test_undefined ())
{
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
g_unsetenv (NULL);
g_test_assert_expected_messages ();
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* == NULL*");
g_unsetenv ("foo=bar");
g_test_assert_expected_messages ();
}
g_unsetenv ("foo");
g_assert_null (g_getenv ("foo"));
g_assert_null (g_getenv (""));
}
static void
test_setenv (void)
{
if (g_test_subprocess ())
{
const char *var, *value;
var = "NOSUCHENVVAR";
value = "value1";
g_assert_null (g_getenv (var));
g_setenv (var, value, FALSE);
g_assert_cmpstr (g_getenv (var), ==, value);
g_assert_true (g_setenv (var, "value2", FALSE));
g_assert_cmpstr (g_getenv (var), ==, value);
g_assert_true (g_setenv (var, "value2", TRUE));
g_assert_cmpstr (g_getenv (var), ==, "value2");
g_unsetenv (var);
g_assert_null (g_getenv (var));
g_assert_true (g_setenv ("EMPTY_VAR", "", TRUE));
g_assert_cmpstr (g_getenv ("EMPTY_VAR"), ==, "");
g_assert_false (g_setenv ("", "value", TRUE));
#ifdef G_OS_WIN32
{
wchar_t invalid_utf16[] = {
L't', L'e', L's', L't',
LOW_SURROGATE_START,
HIGH_SURROGATE_START,
L'\0'
};
if (!SetEnvironmentVariable (L"INVALID_UTF16_VAR", invalid_utf16))
{
g_error ("%s failed with error code %u",
"SetEnvironmentVariable", (unsigned int) GetLastError ());
}
}
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_WARNING, "*invalid UTF-16*");
g_assert_null (g_getenv ("INVALID_UTF16_VAR"));
g_test_assert_expected_messages ();
#endif
return;
}
g_test_trap_subprocess (NULL, 0, G_TEST_SUBPROCESS_DEFAULT);
g_test_trap_assert_passed ();
}
static void
test_environ_array (void)
{
gchar **env;
const gchar *value;
g_test_summary ("Test getting and setting variables on a local envp array "
"(rather than the global envp).");
env = g_new (gchar *, 1);
env[0] = NULL;
if (g_test_undefined ())
{
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
g_environ_getenv (env, NULL);
g_test_assert_expected_messages ();
}
value = g_environ_getenv (env, "foo");
g_assert_null (value);
if (g_test_undefined ())
{
gchar **undefined_env;
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
undefined_env = g_environ_setenv (env, NULL, "bar", TRUE);
g_test_assert_expected_messages ();
g_strfreev (undefined_env);
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* == NULL*");
undefined_env = g_environ_setenv (env, "foo=fuz", "bar", TRUE);
g_test_assert_expected_messages ();
g_strfreev (undefined_env);
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
undefined_env = g_environ_setenv (env, "foo", NULL, TRUE);
g_test_assert_expected_messages ();
g_strfreev (undefined_env);
g_test_expect_message (G_LOG_DOMAIN, G_LOG_LEVEL_CRITICAL,
"*assertion* != NULL*");
undefined_env = g_environ_unsetenv (env, NULL);
g_test_assert_expected_messages ();
g_strfreev (undefined_env);
}
env = g_environ_setenv (env, "foo", "bar", TRUE);
value = g_environ_getenv (env, "foo");
g_assert_cmpstr (value, ==, "bar");
env = g_environ_setenv (env, "foo2", "bar2", FALSE);
value = g_environ_getenv (env, "foo");
g_assert_cmpstr (value, ==, "bar");
value = g_environ_getenv (env, "foo2");
g_assert_cmpstr (value, ==, "bar2");
env = g_environ_setenv (env, "foo", "x", FALSE);
value = g_environ_getenv (env, "foo");
g_assert_cmpstr (value, ==, "bar");
env = g_environ_setenv (env, "foo", "x", TRUE);
value = g_environ_getenv (env, "foo");
g_assert_cmpstr (value, ==, "x");
env = g_environ_unsetenv (env, "foo2");
value = g_environ_getenv (env, "foo2");
g_assert_null (value);
g_strfreev (env);
}
static void
test_environ_null (void)
{
gchar **env;
const gchar *value;
g_test_summary ("Test getting and setting variables on a NULL envp array.");
env = NULL;
value = g_environ_getenv (env, "foo");
g_assert_null (value);
env = g_environ_setenv (NULL, "foo", "bar", TRUE);
g_assert_nonnull (env);
g_strfreev (env);
env = g_environ_unsetenv (NULL, "foo");
g_assert_null (env);
}
static void
test_environ_case (void)
{
gchar **env;
const gchar *value;
g_test_summary ("Test that matching environment variables is case-insensitive "
"on Windows and not on other platforms, since envvars were "
"case-insensitive on DOS.");
env = NULL;
env = g_environ_setenv (env, "foo", "bar", TRUE);
value = g_environ_getenv (env, "foo");
g_assert_cmpstr (value, ==, "bar");
value = g_environ_getenv (env, "Foo");
#ifdef G_OS_WIN32
g_assert_cmpstr (value, ==, "bar");
#else
g_assert_null (value);
#endif
env = g_environ_setenv (env, "FOO", "x", TRUE);
value = g_environ_getenv (env, "foo");
#ifdef G_OS_WIN32
g_assert_cmpstr (value, ==, "x");
#else
g_assert_cmpstr (value, ==, "bar");
#endif
env = g_environ_unsetenv (env, "Foo");
value = g_environ_getenv (env, "foo");
#ifdef G_OS_WIN32
g_assert_null (value);
#else
g_assert_cmpstr (value, ==, "bar");
#endif
g_strfreev (env);
}
static void
test_expansion (void)
{
g_test_summary ("Test expansion of environment variable references.");
#ifdef G_OS_WIN32
if (g_test_subprocess ())
{
const struct
{
const wchar_t *name;
const wchar_t *value;
} tests[] = {
{ L"EMPTY_VAR", L"" },
{ L"NON_EXISTING_VAR", NULL },
{ L"HELLO_VAR", L"HELLO" },
{ L"TO_EXPAND_VAR1", L"%HELLO_VAR% WORLD" },
{ L"TO_EXPAND_VAR2", L"%EMPTY_VAR%" },
{ L"TO_EXPAND_VAR3", L"%NON_EXISTING_VAR%" },
{ L"VAR1", L"%VAR2%" },
{ L"VAR2", L"%VAR1%" },
};
for (size_t i = 0; i < G_N_ELEMENTS (tests); i++)
if (!SetEnvironmentVariable (tests[i].name, tests[i].value))
{
g_error ("%s failed with error code %u",
"SetEnvironmentVariable", (unsigned int) GetLastError ());
}
g_assert_cmpstr (g_getenv ("TO_EXPAND_VAR1"), ==, "HELLO WORLD");
g_assert_cmpstr (g_getenv ("TO_EXPAND_VAR2"), ==, "");
g_assert_cmpstr (g_getenv ("TO_EXPAND_VAR3"), ==, "%NON_EXISTING_VAR%");
g_assert_nonnull (g_getenv ("VAR1"));
return;
}
g_test_trap_subprocess (NULL, 0, G_TEST_SUBPROCESS_DEFAULT);
g_test_trap_assert_passed ();
#else
g_test_skip ("Environment variable expansion is only supported on Windows");
#endif
}
int
main (int argc, char **argv)
{
g_test_init (&argc, &argv, NULL);
g_test_add_func ("/environ/listenv", test_listenv);
g_test_add_func ("/environ/getenv", test_getenv);
g_test_add_func ("/environ/setenv", test_setenv);
g_test_add_func ("/environ/array", test_environ_array);
g_test_add_func ("/environ/null", test_environ_null);
g_test_add_func ("/environ/case", test_environ_case);
g_test_add_func ("/environ/expansion", test_expansion);
return g_test_run ();
}
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