gdbsupport/selftest.cc

   1 /* GDB self-testing.
   2    Copyright (C) 2016-2020 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "common-defs.h"
  20 #include "common-exceptions.h"
  21 #include "common-debug.h"
  22 #include "selftest.h"
  23 #include <map>
  24
  25 namespace selftests
  26 {
  27 /* All the tests that have been registered.  Using an std::map allows keeping
  28    the order of tests stable and easily looking up whether a test name
  29    exists.  */
  30
  31 static std::map<std::string, std::unique_ptr<selftest>> tests;
  32
  33 /* A selftest that calls the test function without arguments.  */
  34
  35 struct simple_selftest : public selftest
  36 {
  37   simple_selftest (self_test_function *function_)
  38   : function (function_)
  39   {}
  40
  41   void operator() () const override
  42   {
  43     function ();
  44   }
  45
  46   self_test_function *function;
  47 };
  48
  49 /* See selftest.h.  */
  50
  51 void
  52 register_test (const std::string &name, selftest *test)
  53 {
  54   /* Check that no test with this name already exist.  */
  55   gdb_assert (tests.find (name) == tests.end ());
  56
  57   tests[name] = std::unique_ptr<selftest> (test);
  58 }
  59
  60 /* See selftest.h.  */
  61
  62 void
  63 register_test (const std::string &name, self_test_function *function)
  64 {
  65   register_test (name, new simple_selftest (function));
  66 }
  67
  68 /* See selftest.h.  */
  69
  70 void
  71 run_tests (const char *filter)
  72 {
  73   int ran = 0, failed = 0;
  74
  75   for (const auto &pair : tests)
  76     {
  77       const std::string &name = pair.first;
  78       const std::unique_ptr<selftest> &test = pair.second;
  79
  80       if (filter != NULL && *filter != '\0'
  81           && name.find (filter) == std::string::npos)
  82         continue;
  83
  84       try
  85         {
  86           debug_printf (_("Running selftest %s.\n"), name.c_str ());
  87           ++ran;
  88           (*test) ();
  89         }
  90       catch (const gdb_exception_error &ex)
  91         {
  92           ++failed;
  93           debug_printf ("Self test failed: %s\n", ex.what ());
  94         }
  95
  96       reset ();
  97     }
  98
  99   debug_printf (_("Ran %d unit tests, %d failed\n"),
 100                 ran, failed);
 101 }
 102
 103 /* See selftest.h.  */
 104
 105 void for_each_selftest (for_each_selftest_ftype func)
 106 {
 107   for (const auto &pair : tests)
 108     func (pair.first);
 109 }
 110
 111 } // namespace selftests