gdb/unittests/string_view-selftests.c

   1 /* Self tests for string_view for GDB, the GNU debugger.
   2
   3    Copyright (C) 2018-2023 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 /* No need to test string_view if we're using C++17, since we're going to use
  21    the "real" version.  */
  22 #if __cplusplus < 201703L
  23
  24 #define GNULIB_NAMESPACE gnulib
  25
  26 #include "diagnostics.h"
  27
  28 /* Since this file uses GNULIB_NAMESPACE, some code defined in headers ends up
  29    using system functions rather than gnulib replacements.  This is not really
  30    a problem for this test, but it generates some warnings with Clang, silence
  31    them.  */
  32 DIAGNOSTIC_PUSH
  33 DIAGNOSTIC_IGNORE_USER_DEFINED_WARNINGS
  34
  35 #include "defs.h"
  36 #include "gdbsupport/selftest.h"
  37 #include "gdbsupport/gdb_string_view.h"
  38
  39 /* Used by the included .cc files below.  Included here because the
  40    included test files are wrapped in a namespace.  */
  41 #include <string>
  42 #include <sstream>
  43 #include <fstream>
  44 #include <iostream>
  45
  46 DIAGNOSTIC_POP
  47
  48 /* libstdc++'s testsuite uses VERIFY.  */
  49 #define VERIFY SELF_CHECK
  50
  51 /* Used to disable testing features not supported by
  52    gdb::string_view.  */
  53 #define GDB_STRING_VIEW
  54
  55 namespace selftests {
  56 namespace string_view {
  57
  58 /* The actual tests live in separate files, which were originally
  59    copied over from libstdc++'s testsuite.  To preserve the structure
  60    and help with comparison with the original tests, the file names
  61    have been preserved, and only minimal modification was done to have
  62    them compile against gdb::string_view instead of std::string_view:
  63
  64      - std::string_view->gdb::string_view, etc.
  65      - ATTRIBUTE_UNUSED in a few places
  66      - wrap each file in a namespace so they can all be compiled as a
  67        single unit.
  68      - libstdc++'s license and formatting style was preserved.
  69 */
  70
  71 #include "basic_string_view/capacity/1.cc"
  72 #include "basic_string_view/cons/char/1.cc"
  73 #include "basic_string_view/cons/char/2.cc"
  74 #include "basic_string_view/cons/char/3.cc"
  75 #include "basic_string_view/element_access/char/1.cc"
  76 #include "basic_string_view/element_access/char/empty.cc"
  77 #include "basic_string_view/element_access/char/front_back.cc"
  78 #include "basic_string_view/inserters/char/2.cc"
  79 #include "basic_string_view/modifiers/remove_prefix/char/1.cc"
  80 #include "basic_string_view/modifiers/remove_suffix/char/1.cc"
  81 #include "basic_string_view/modifiers/swap/char/1.cc"
  82 #include "basic_string_view/operations/compare/char/1.cc"
  83 #include "basic_string_view/operations/compare/char/13650.cc"
  84 #include "basic_string_view/operations/copy/char/1.cc"
  85 #include "basic_string_view/operations/data/char/1.cc"
  86 #include "basic_string_view/operations/find/char/1.cc"
  87 #include "basic_string_view/operations/find/char/2.cc"
  88 #include "basic_string_view/operations/find/char/3.cc"
  89 #include "basic_string_view/operations/find/char/4.cc"
  90 #include "basic_string_view/operations/rfind/char/1.cc"
  91 #include "basic_string_view/operations/rfind/char/2.cc"
  92 #include "basic_string_view/operations/rfind/char/3.cc"
  93 #include "basic_string_view/operations/substr/char/1.cc"
  94 #include "basic_string_view/operators/char/2.cc"
  95
  96 static void
  97 run_tests ()
  98 {
  99   capacity_1::main ();
 100   cons_1::main ();
 101   cons_2::main ();
 102   cons_3::main ();
 103   element_access_1::main ();
 104   element_access_empty::main ();
 105   element_access_front_back::main ();
 106   inserters_2::main ();
 107   modifiers_remove_prefix::main ();
 108   modifiers_remove_suffix::main ();
 109   modifiers_swap::test01 ();
 110   operations_compare_1::main ();
 111   operations_compare_13650::main ();
 112   operations_copy_1::main ();
 113   operations_data_1::main ();
 114   operations_find_1::main ();
 115   operations_find_2::main ();
 116   operations_find_3::main ();
 117   operations_find_4::main ();
 118   operations_rfind_1::main ();
 119   operations_rfind_2::main ();
 120   operations_rfind_3::main ();
 121   operations_substr_1::main ();
 122   operators_2::main ();
 123
 124   constexpr gdb::string_view sv_empty;
 125   SELF_CHECK (sv_empty.empty ());
 126
 127   std::string std_string = "fika";
 128   gdb::string_view sv1 (std_string);
 129   SELF_CHECK (sv1 == "fika");
 130
 131   constexpr const char *fika = "fika";
 132   gdb::string_view sv2 (fika);
 133   SELF_CHECK (sv2 == "fika");
 134
 135   constexpr gdb::string_view sv3 (fika, 3);
 136   SELF_CHECK (sv3 == "fik");
 137
 138   constexpr gdb::string_view sv4 (sv3);
 139   SELF_CHECK (sv4 == "fik");
 140
 141   constexpr gdb::string_view::iterator it_begin = sv4.begin ();
 142   static_assert (*it_begin == 'f', "");
 143
 144   constexpr gdb::string_view::iterator it_end = sv4.end ();
 145   static_assert (*it_end == 'a', "");
 146
 147   const gdb::string_view::reverse_iterator it_rbegin = sv4.rbegin ();
 148   SELF_CHECK (*it_rbegin == 'k');
 149
 150   const gdb::string_view::reverse_iterator it_rend = sv4.rend ();
 151   SELF_CHECK (*(it_rend - 1) == 'f');
 152
 153   constexpr gdb::string_view::size_type size = sv4.size ();
 154   static_assert (size == 3, "");
 155
 156   constexpr gdb::string_view::size_type length = sv4.length ();
 157   static_assert (length == 3, "");
 158
 159   constexpr gdb::string_view::size_type max_size = sv4.max_size ();
 160   static_assert (max_size > 0, "");
 161
 162   constexpr bool empty = sv4.empty ();
 163   static_assert (!empty, "");
 164
 165   constexpr char c1 = sv4[1];
 166   static_assert (c1 == 'i', "");
 167
 168   constexpr char c2 = sv4.at (2);
 169   static_assert (c2 == 'k', "");
 170
 171   constexpr char front = sv4.front ();
 172   static_assert (front == 'f', "");
 173
 174   constexpr char back = sv4.back ();
 175   static_assert (back == 'k', "");
 176
 177   constexpr const char *data = sv4.data ();
 178   static_assert (data == fika, "");
 179 }
 180
 181 } /* namespace string_view */
 182 } /* namespace selftests */
 183
 184 #endif /* __cplusplus < 201703L */
 185
 186 void _initialize_string_view_selftests ();
 187 void
 188 _initialize_string_view_selftests ()
 189 {
 190 #if defined(GDB_STRING_VIEW)
 191   selftests::register_test ("string_view", selftests::string_view::run_tests);
 192 #endif
 193 }