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Add unit tests for easily tested, non-trivial utility functions

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This commit is contained in:
Robert Ransom 2012-02-15 22:41:49 -08:00 committed by Nick Mathewson
parent 33552c16ca
commit 773290c09a
1 changed files with 242 additions and 0 deletions
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242
src/test/test_util.c
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@ -1856,6 +1856,245 @@ test_util_eat_whitespace(void *ptr)
;
}
/** Return a newly allocated smartlist containing the lines of text in
* <b>lines</b>. The returned strings are heap-allocated, and must be
* freed by the caller.
*
* XXXX? Move to container.[hc] ? */
static smartlist_t *
smartlist_new_from_text_lines(const char *lines)
{
smartlist_t *sl = smartlist_new();
char *last_line;
smartlist_split_string(sl, lines, "\n", 0, 0);
last_line = smartlist_pop_last(sl);
if (last_line != NULL && *last_line != '\0') {
smartlist_add(sl, last_line);
}
return sl;
}
/** Test smartlist_new_from_text_lines */
static void
test_util_sl_new_from_text_lines(void *ptr)
{
(void)ptr;
{ /* Normal usage */
smartlist_t *sl = smartlist_new_from_text_lines("foo\nbar\nbaz\n");
int sl_len = smartlist_len(sl);
tt_want_int_op(sl_len, ==, 3);
if (sl_len > 0) tt_want_str_op(smartlist_get(sl, 0), ==, "foo");
if (sl_len > 1) tt_want_str_op(smartlist_get(sl, 1), ==, "bar");
if (sl_len > 2) tt_want_str_op(smartlist_get(sl, 2), ==, "baz");
SMARTLIST_FOREACH(sl, void *, x, tor_free(x));
smartlist_free(sl);
}
{ /* No final newline */
smartlist_t *sl = smartlist_new_from_text_lines("foo\nbar\nbaz");
int sl_len = smartlist_len(sl);
tt_want_int_op(sl_len, ==, 3);
if (sl_len > 0) tt_want_str_op(smartlist_get(sl, 0), ==, "foo");
if (sl_len > 1) tt_want_str_op(smartlist_get(sl, 1), ==, "bar");
if (sl_len > 2) tt_want_str_op(smartlist_get(sl, 2), ==, "baz");
SMARTLIST_FOREACH(sl, void *, x, tor_free(x));
smartlist_free(sl);
}
{ /* No newlines */
smartlist_t *sl = smartlist_new_from_text_lines("foo");
int sl_len = smartlist_len(sl);
tt_want_int_op(sl_len, ==, 1);
if (sl_len > 0) tt_want_str_op(smartlist_get(sl, 0), ==, "foo");
SMARTLIST_FOREACH(sl, void *, x, tor_free(x));
smartlist_free(sl);
}
{ /* No text at all */
smartlist_t *sl = smartlist_new_from_text_lines("");
int sl_len = smartlist_len(sl);
tt_want_int_op(sl_len, ==, 0);
SMARTLIST_FOREACH(sl, void *, x, tor_free(x));
smartlist_free(sl);
}
}
/** Test process_environment_make */
static void
test_util_make_environment(void *ptr)
{
const char *env_vars_string =
"PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/bin\n"
"HOME=/home/foozer\n";
const char expected_windows_env_block[] =
"HOME=/home/foozer\000"
"PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/bin\000"
"\000";
size_t expected_windows_env_block_len = sizeof(expected_windows_env_block);
smartlist_t *env_vars = smartlist_new_from_text_lines(env_vars_string);
smartlist_t *env_vars_sorted = smartlist_new();
smartlist_t *env_vars_in_unixoid_env_block_sorted = smartlist_new();
process_environment_t *env;
(void)ptr;
env = process_environment_make(env_vars);
/* Check that the Windows environment block is correct. */
tt_want(tor_memeq(expected_windows_env_block, env->windows_environment_block,
expected_windows_env_block_len));
/* Now for the Unixoid environment block. We don't care which order
* these environment variables are in, so we sort both lists first. */
smartlist_add_all(env_vars_sorted, env_vars);
{
char **v;
for (v = env->unixoid_environment_block; *v; ++v) {
smartlist_add(env_vars_in_unixoid_env_block_sorted, *v);
}
}
smartlist_sort_strings(env_vars_sorted);
smartlist_sort_strings(env_vars_in_unixoid_env_block_sorted);
tt_want_int_op(smartlist_len(env_vars_sorted), ==,
smartlist_len(env_vars_in_unixoid_env_block_sorted));
{
int len = smartlist_len(env_vars_sorted);
int i;
if (smartlist_len(env_vars_in_unixoid_env_block_sorted) < len) {
len = smartlist_len(env_vars_in_unixoid_env_block_sorted);
}
for (i = 0; i < len; ++i) {
tt_want_str_op(smartlist_get(env_vars_sorted, i), ==,
smartlist_get(env_vars_in_unixoid_env_block_sorted, i));
}
}
/* Clean up. */
smartlist_free(env_vars_in_unixoid_env_block_sorted);
smartlist_free(env_vars_sorted);
SMARTLIST_FOREACH(env_vars, char *, x, tor_free(x));
smartlist_free(env_vars);
process_environment_free(env);
}
/** Test set_environment_variable_in_smartlist */
static void
test_util_set_env_var_in_sl(void *ptr)
{
/* The environment variables in these strings are in arbitrary
* order; we sort the resulting lists before comparing them.
*
* (They *will not* end up in the order shown in
* expected_resulting_env_vars_string.) */
const char *base_env_vars_string =
"PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/bin\n"
"HOME=/home/foozer\n"
"TERM=xterm\n"
"SHELL=/bin/ksh\n"
"USER=foozer\n"
"LOGNAME=foozer\n"
"USERNAME=foozer\n"
"LANG=en_US.utf8\n"
;
const char *new_env_vars_string =
"TERM=putty\n"
"DISPLAY=:18.0\n"
;
const char *expected_resulting_env_vars_string =
"PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/bin\n"
"HOME=/home/foozer\n"
"TERM=putty\n"
"SHELL=/bin/ksh\n"
"USER=foozer\n"
"LOGNAME=foozer\n"
"USERNAME=foozer\n"
"LANG=en_US.utf8\n"
"DISPLAY=:18.0\n"
;
smartlist_t *merged_env_vars =
smartlist_new_from_text_lines(base_env_vars_string);
smartlist_t *new_env_vars =
smartlist_new_from_text_lines(new_env_vars_string);
smartlist_t *expected_resulting_env_vars =
smartlist_new_from_text_lines(expected_resulting_env_vars_string);
/* Elements of merged_env_vars are heap-allocated, and must be
* freed. Some of them are (or should) be freed by
* set_environment_variable_in_smartlist.
*
* Elements of new_env_vars are heap-allocated, but are copied into
* merged_env_vars, so they are not freed separately at the end of
* the function.
*
* Elements of expected_resulting_env_vars are heap-allocated, and
* must be freed. */
(void)ptr;
SMARTLIST_FOREACH(new_env_vars, char *, env_var,
set_environment_variable_in_smartlist(merged_env_vars,
env_var,
_tor_free,
1));
smartlist_sort_strings(merged_env_vars);
smartlist_sort_strings(expected_resulting_env_vars);
tt_want_int_op(smartlist_len(merged_env_vars), ==,
smartlist_len(expected_resulting_env_vars));
{
int len = smartlist_len(merged_env_vars);
int i;
if (smartlist_len(expected_resulting_env_vars) < len) {
len = smartlist_len(expected_resulting_env_vars);
}
for (i = 0; i < len; ++i) {
tt_want_str_op(smartlist_get(merged_env_vars, i), ==,
smartlist_get(expected_resulting_env_vars, i));
}
}
/* Clean up. */
SMARTLIST_FOREACH(merged_env_vars, char *, x, tor_free(x));
smartlist_free(merged_env_vars);
smartlist_free(new_env_vars);
SMARTLIST_FOREACH(expected_resulting_env_vars, char *, x, tor_free(x));
smartlist_free(expected_resulting_env_vars);
}
#define UTIL_LEGACY(name) \
{ #name, legacy_test_helper, 0, &legacy_setup, test_util_ ## name }
@ -1895,6 +2134,9 @@ struct testcase_t util_tests[] = {
UTIL_TEST(split_lines, 0),
UTIL_TEST(n_bits_set, 0),
UTIL_TEST(eat_whitespace, 0),
UTIL_TEST(sl_new_from_text_lines, 0),
UTIL_TEST(make_environment, 0),
UTIL_TEST(set_env_var_in_sl, 0),
END_OF_TESTCASES
};