| /* A self-testing framework, for use by -fself-test. |
| Copyright (C) 2015-2021 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" |
| #include "intl.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 val1 and val2 with strcmp. They ought |
| to be non-NULL; fail gracefully if either or both are NULL. */ |
| |
| void |
| assert_streq (const location &loc, |
| const char *desc_val1, const char *desc_val2, |
| const char *val1, const char *val2) |
| { |
| /* If val1 or val2 are NULL, fail with a custom error message. */ |
| if (val1 == NULL) |
| if (val2 == NULL) |
| fail_formatted (loc, "ASSERT_STREQ (%s, %s) val1=NULL val2=NULL", |
| desc_val1, desc_val2); |
| else |
| fail_formatted (loc, "ASSERT_STREQ (%s, %s) val1=NULL val2=\"%s\"", |
| desc_val1, desc_val2, val2); |
| else |
| if (val2 == NULL) |
| fail_formatted (loc, "ASSERT_STREQ (%s, %s) val1=\"%s\" val2=NULL", |
| desc_val1, desc_val2, val1); |
| else |
| { |
| if (strcmp (val1, val2) == 0) |
| pass (loc, "ASSERT_STREQ"); |
| else |
| fail_formatted (loc, "ASSERT_STREQ (%s, %s) val1=\"%s\" val2=\"%s\"", |
| desc_val1, desc_val2, val1, val2); |
| } |
| } |
| |
| /* Implementation detail of ASSERT_STR_CONTAINS. |
| Use strstr to determine if val_needle 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); |
| } |
| |
| /* Implementation detail of ASSERT_STR_STARTSWITH. |
| Determine if VAL_STR starts with VAL_PREFIX. |
| ::selftest::pass if VAL_STR does start with VAL_PREFIX. |
| ::selftest::fail if it does not, or either is NULL (using |
| DESC_STR and DESC_PREFIX in the error message). */ |
| |
| void |
| assert_str_startswith (const location &loc, |
| const char *desc_str, |
| const char *desc_prefix, |
| const char *val_str, |
| const char *val_prefix) |
| { |
| /* If val_str is NULL, fail with a custom error message. */ |
| if (val_str == NULL) |
| fail_formatted (loc, "ASSERT_STR_STARTSWITH (%s, %s) str=NULL", |
| desc_str, desc_prefix); |
| |
| /* If val_prefix is NULL, fail with a custom error message. */ |
| if (val_prefix == NULL) |
| fail_formatted (loc, |
| "ASSERT_STR_STARTSWITH (%s, %s) str=\"%s\" prefix=NULL", |
| desc_str, desc_prefix, val_str); |
| |
| const char *test = strstr (val_str, val_prefix); |
| if (test == val_str) |
| pass (loc, "ASSERT_STR_STARTSWITH"); |
| else |
| fail_formatted |
| (loc, "ASSERT_STR_STARTSWITH (%s, %s) str=\"%s\" prefix=\"%s\"", |
| desc_str, desc_prefix, val_str, val_prefix); |
| } |
| |
| |
| /* 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); |
| } |
| |
| /* Avoid introducing locale-specific differences in the results |
| by hardcoding open_quote and close_quote. */ |
| |
| auto_fix_quotes::auto_fix_quotes () |
| { |
| m_saved_open_quote = open_quote; |
| m_saved_close_quote = close_quote; |
| open_quote = "`"; |
| close_quote = "'"; |
| } |
| |
| /* Restore old values of open_quote and close_quote. */ |
| |
| auto_fix_quotes::~auto_fix_quotes () |
| { |
| open_quote = m_saved_open_quote; |
| close_quote = m_saved_close_quote; |
| } |
| |
| /* Read the contents of PATH into memory, returning a 0-terminated buffer |
| that must be freed by the caller. |
| Fail (and abort) if there are any problems, with LOC as the reported |
| location of the failure. */ |
| |
| char * |
| read_file (const location &loc, const char *path) |
| { |
| FILE *f_in = fopen (path, "r"); |
| if (!f_in) |
| fail_formatted (loc, "unable to open file: %s", path); |
| |
| /* Read content, allocating FIXME. */ |
| char *result = NULL; |
| size_t total_sz = 0; |
| size_t alloc_sz = 0; |
| char buf[4096]; |
| size_t iter_sz_in; |
| |
| while ( (iter_sz_in = fread (buf, 1, sizeof (buf), f_in)) ) |
| { |
| gcc_assert (alloc_sz >= total_sz); |
| size_t old_total_sz = total_sz; |
| total_sz += iter_sz_in; |
| /* Allow 1 extra byte for 0-termination. */ |
| if (alloc_sz < (total_sz + 1)) |
| { |
| size_t new_alloc_sz = alloc_sz ? alloc_sz * 2: total_sz + 1; |
| result = (char *)xrealloc (result, new_alloc_sz); |
| alloc_sz = new_alloc_sz; |
| } |
| memcpy (result + old_total_sz, buf, iter_sz_in); |
| } |
| |
| if (!feof (f_in)) |
| fail_formatted (loc, "error reading from %s: %s", path, |
| xstrerror (errno)); |
| |
| fclose (f_in); |
| |
| /* 0-terminate the buffer. */ |
| gcc_assert (total_sz < alloc_sz); |
| result[total_sz] = '\0'; |
| |
| return result; |
| } |
| |
| /* The path of SRCDIR/testsuite/selftests. */ |
| |
| const char *path_to_selftest_files = NULL; |
| |
| /* Convert a path relative to SRCDIR/testsuite/selftests |
| to a real path (either absolute, or relative to pwd). |
| The result should be freed by the caller. */ |
| |
| char * |
| locate_file (const char *name) |
| { |
| ASSERT_NE (NULL, path_to_selftest_files); |
| return concat (path_to_selftest_files, "/", name, NULL); |
| } |
| |
| /* selftest::test_runner's ctor. */ |
| |
| test_runner::test_runner (const char *name) |
| : m_name (name), |
| m_start_time (get_run_time ()) |
| { |
| } |
| |
| /* selftest::test_runner's dtor. Print a summary line to stderr. */ |
| |
| test_runner::~test_runner () |
| { |
| /* Finished running tests. */ |
| long finish_time = get_run_time (); |
| long elapsed_time = finish_time - m_start_time; |
| |
| fprintf (stderr, |
| "%s: %i pass(es) in %ld.%06ld seconds\n", |
| m_name, num_passes, |
| elapsed_time / 1000000, elapsed_time % 1000000); |
| } |
| |
| /* Selftests for libiberty. */ |
| |
| /* Verify that xstrndup generates EXPECTED when called on SRC and N. */ |
| |
| static void |
| assert_xstrndup_eq (const char *expected, const char *src, size_t n) |
| { |
| char *buf = xstrndup (src, n); |
| ASSERT_STREQ (expected, buf); |
| free (buf); |
| } |
| |
| /* Verify that xstrndup works as expected. */ |
| |
| static void |
| test_xstrndup () |
| { |
| assert_xstrndup_eq ("", "test", 0); |
| assert_xstrndup_eq ("t", "test", 1); |
| assert_xstrndup_eq ("te", "test", 2); |
| assert_xstrndup_eq ("tes", "test", 3); |
| assert_xstrndup_eq ("test", "test", 4); |
| assert_xstrndup_eq ("test", "test", 5); |
| |
| /* Test on an string without zero termination. */ |
| const char src[4] = {'t', 'e', 's', 't'}; |
| assert_xstrndup_eq ("", src, 0); |
| assert_xstrndup_eq ("t", src, 1); |
| assert_xstrndup_eq ("te", src, 2); |
| assert_xstrndup_eq ("tes", src, 3); |
| assert_xstrndup_eq ("test", src, 4); |
| } |
| |
| /* Run selftests for libiberty. */ |
| |
| static void |
| test_libiberty () |
| { |
| test_xstrndup (); |
| } |
| |
| /* 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_GT (2, 1); |
| ASSERT_GT_AT (SELFTEST_LOCATION, 2, 1); |
| ASSERT_LT (1, 2); |
| ASSERT_LT_AT (SELFTEST_LOCATION, 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); |
| } |
| |
| /* Verify read_file (and also temp_source_file). */ |
| |
| static void |
| test_read_file () |
| { |
| temp_source_file t (SELFTEST_LOCATION, "test1.s", |
| "\tjmp\t.L2\n"); |
| char *buf = read_file (SELFTEST_LOCATION, t.get_filename ()); |
| ASSERT_STREQ ("\tjmp\t.L2\n", buf); |
| free (buf); |
| } |
| |
| /* Verify locate_file (and read_file). */ |
| |
| static void |
| test_locate_file () |
| { |
| char *path = locate_file ("example.txt"); |
| char *buf = read_file (SELFTEST_LOCATION, path); |
| ASSERT_STREQ ("example of a selftest file\n", buf); |
| free (buf); |
| free (path); |
| } |
| |
| /* Run all of the selftests within this file. */ |
| |
| void |
| selftest_c_tests () |
| { |
| test_libiberty (); |
| test_assertions (); |
| test_named_temp_file (); |
| test_read_file (); |
| test_locate_file (); |
| } |
| |
| } // namespace selftest |
| |
| #endif /* #if CHECKING_P */ |