gdbsupport/selftest.h

   1 /* GDB self-testing.
   2    Copyright (C) 2016-2022 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 #ifndef COMMON_SELFTEST_H
  20 #define COMMON_SELFTEST_H
  21
  22 #include "gdbsupport/array-view.h"
  23 #include "gdbsupport/function-view.h"
  24 #include "gdbsupport/iterator-range.h"
  25 #include <set>
  26 #include <vector>
  27
  28 /* A test is just a function that does some checks and throws an
  29    exception if something has gone wrong.  */
  30
  31 namespace selftests
  32 {
  33
  34 /* Selftests are registered under a unique name.  */
  35
  36 struct selftest
  37 {
  38   selftest (std::string name, std::function<void (void)> test)
  39     : name { std::move (name) }, test { std::move (test) }
  40   { }
  41   bool operator< (const selftest &rhs) const
  42   { return name < rhs.name; }
  43
  44   std::string name;
  45   std::function<void (void)> test;
  46 };
  47
  48 /* Type of the container of all the registered selftests.  */
  49 using selftests_registry = std::set<selftest>;
  50 using selftests_range = iterator_range<selftests_registry::const_iterator>;
  51
  52 /* Create a range to iterate over all registered tests.  */
  53
  54 selftests_range all_selftests ();
  55
  56 /* True if selftest should run verbosely.  */
  57
  58 extern bool run_verbose ();
  59
  60 /* Register a new self-test.  */
  61
  62 extern void register_test (const std::string &name,
  63                            std::function<void(void)> function);
  64
  65 /* A selftest generator is a callback function used to delay the generation
  66    of selftests.  */
  67
  68 using selftests_generator = std::function<std::vector<selftest> (void)>;
  69
  70 /* Register a function which can lazily register selftests once GDB is fully
  71    initialized. */
  72
  73 extern void add_lazy_generator (selftests_generator generator);
  74
  75 /* Run all the self tests.  This print a message describing the number
  76    of test and the number of failures.
  77
  78    If FILTERS is not empty, only run tests with names containing one of the
  79    element of FILTERS.  */
  80
  81 extern void run_tests (gdb::array_view<const char *const> filters,
  82                        bool verbose = false);
  83
  84 /* Reset GDB or GDBserver's internal state.  */
  85 extern void reset ();
  86 }
  87
  88 /* Check that VALUE is true, and, if not, throw an exception.  */
  89
  90 #define SELF_CHECK(VALUE)                                               \
  91   do {                                                                  \
  92     if (!(VALUE))                                                       \
  93       error (_("self-test failed at %s:%d"), __FILE__, __LINE__);       \
  94   } while (0)
  95
  96 #endif /* COMMON_SELFTEST_H */