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/* A self-testing framework, for use by -fself-test.
Copyright (C) 2015-2016 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "selftest.h"
#if CHECKING_P
namespace selftest {
int num_passes;
/* Record the successful outcome of some aspect of a test. */
void
pass (const location &/*loc*/, const char */*msg*/)
{
num_passes++;
}
/* Report the failed outcome of some aspect of a test and abort. */
void
fail (const location &loc, const char *msg)
{
fprintf (stderr,"%s:%i: %s: FAIL: %s\n", loc.m_file, loc.m_line,
loc.m_function, msg);
abort ();
}
/* As "fail", but using printf-style formatted output. */
void
fail_formatted (const location &loc, const char *fmt, ...)
{
va_list ap;
fprintf (stderr, "%s:%i: %s: FAIL: ", loc.m_file, loc.m_line,
loc.m_function);
va_start (ap, fmt);
vfprintf (stderr, fmt, ap);
va_end (ap);
fprintf (stderr, "\n");
abort ();
}
/* Implementation detail of ASSERT_STREQ.
Compare val_expected and val_actual with strcmp. They ought
to be non-NULL; fail gracefully if either are NULL. */
void
assert_streq (const location &loc,
const char *desc_expected, const char *desc_actual,
const char *val_expected, const char *val_actual)
{
/* If val_expected is NULL, the test is buggy. Fail gracefully. */
if (val_expected == NULL)
fail_formatted (loc, "ASSERT_STREQ (%s, %s) expected=NULL",
desc_expected, desc_actual);
/* If val_actual is NULL, fail with a custom error message. */
if (val_actual == NULL)
fail_formatted (loc, "ASSERT_STREQ (%s, %s) expected=\"%s\" actual=NULL",
desc_expected, desc_actual, val_expected);
if (0 == strcmp (val_expected, val_actual))
pass (loc, "ASSERT_STREQ");
else
fail_formatted (loc, "ASSERT_STREQ (%s, %s) expected=\"%s\" actual=\"%s\"",
desc_expected, desc_actual, val_expected, val_actual);
}
/* Implementation detail of ASSERT_STR_CONTAINS.
Use strstr to determine if val_needle is is within val_haystack.
::selftest::pass if it is found.
::selftest::fail if it is not found. */
void
assert_str_contains (const location &loc,
const char *desc_haystack,
const char *desc_needle,
const char *val_haystack,
const char *val_needle)
{
/* If val_haystack is NULL, fail with a custom error message. */
if (val_haystack == NULL)
fail_formatted (loc, "ASSERT_STR_CONTAINS (%s, %s) haystack=NULL",
desc_haystack, desc_needle);
/* If val_needle is NULL, fail with a custom error message. */
if (val_needle == NULL)
fail_formatted (loc,
"ASSERT_STR_CONTAINS (%s, %s) haystack=\"%s\" needle=NULL",
desc_haystack, desc_needle, val_haystack);
const char *test = strstr (val_haystack, val_needle);
if (test)
pass (loc, "ASSERT_STR_CONTAINS");
else
fail_formatted
(loc, "ASSERT_STR_CONTAINS (%s, %s) haystack=\"%s\" needle=\"%s\"",
desc_haystack, desc_needle, val_haystack, val_needle);
}
/* Constructor. Generate a name for the file. */
named_temp_file::named_temp_file (const char *suffix)
{
m_filename = make_temp_file (suffix);
ASSERT_NE (m_filename, NULL);
}
/* Destructor. Delete the tempfile. */
named_temp_file::~named_temp_file ()
{
unlink (m_filename);
diagnostics_file_cache_forcibly_evict_file (m_filename);
free (m_filename);
}
/* Constructor. Create a tempfile using SUFFIX, and write CONTENT to
it. Abort if anything goes wrong, using LOC as the effective
location in the problem report. */
temp_source_file::temp_source_file (const location &loc,
const char *suffix,
const char *content)
: named_temp_file (suffix)
{
FILE *out = fopen (get_filename (), "w");
if (!out)
fail_formatted (loc, "unable to open tempfile: %s", get_filename ());
fprintf (out, "%s", content);
fclose (out);
}
/* Selftests for the selftest system itself. */
/* Sanity-check the ASSERT_ macros with various passing cases. */
static void
test_assertions ()
{
ASSERT_TRUE (true);
ASSERT_FALSE (false);
ASSERT_EQ (1, 1);
ASSERT_EQ_AT (SELFTEST_LOCATION, 1, 1);
ASSERT_NE (1, 2);
ASSERT_STREQ ("test", "test");
ASSERT_STREQ_AT (SELFTEST_LOCATION, "test", "test");
ASSERT_STR_CONTAINS ("foo bar baz", "bar");
}
/* Verify named_temp_file. */
static void
test_named_temp_file ()
{
named_temp_file t (".txt");
FILE *f = fopen (t.get_filename (), "w");
if (!f)
fail_formatted (SELFTEST_LOCATION,
"unable to open %s for writing", t.get_filename ());
fclose (f);
}
/* Run all of the selftests within this file. */
void
selftest_c_tests ()
{
test_assertions ();
test_named_temp_file ();
}
} // namespace selftest
#endif /* #if CHECKING_P */
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