gcc/testsuite/gcc.dg/plugin/levenshtein_plugin.c

   1 /* Plugin for unittesting gcc/spellcheck.h.  */
   2
   3 #include "config.h"
   4 #include "gcc-plugin.h"
   5 #include "system.h"
   6 #include "coretypes.h"
   7 #include "spellcheck.h"
   8 #include "diagnostic.h"
   9
  10 int plugin_is_GPL_compatible;
  11
  12 static void
  13 levenshtein_distance_unit_test_oneway (const char *a, const char *b,
  14                                        edit_distance_t expected)
  15 {
  16   edit_distance_t actual = levenshtein_distance (a, b);
  17   if (actual != expected)
  18     error ("levenshtein_distance (\"%s\", \"%s\") : expected: %i got %i",
  19            a, b, expected, actual);
  20 }
  21
  22
  23 static void
  24 levenshtein_distance_unit_test (const char *a, const char *b,
  25                                 edit_distance_t expected)
  26 {
  27   /* Run every test both ways to ensure it's symmetric.  */
  28   levenshtein_distance_unit_test_oneway (a, b, expected);
  29   levenshtein_distance_unit_test_oneway (b, a, expected);
  30 }
  31
  32 /* Callback handler for the PLUGIN_FINISH event; run
  33    levenshtein_distance unit tests here.  */
  34
  35 static void
  36 on_finish (void */*gcc_data*/, void */*user_data*/)
  37 {
  38   levenshtein_distance_unit_test ("", "nonempty", strlen ("nonempty"));
  39   levenshtein_distance_unit_test ("saturday", "sunday", 3);
  40   levenshtein_distance_unit_test ("foo", "m_foo", 2);
  41   levenshtein_distance_unit_test ("hello_world", "HelloWorld", 3);
  42   levenshtein_distance_unit_test
  43     ("the quick brown fox jumps over the lazy dog", "dog", 40);
  44   levenshtein_distance_unit_test
  45     ("the quick brown fox jumps over the lazy dog",
  46      "the quick brown dog jumps over the lazy fox",
  47      4);
  48   levenshtein_distance_unit_test
  49     ("Lorem ipsum dolor sit amet, consectetur adipiscing elit,",
  50      "All your base are belong to us",
  51      44);
  52 }
  53
  54 int
  55 plugin_init (struct plugin_name_args *plugin_info,
  56              struct plugin_gcc_version */*version*/)
  57 {
  58   register_callback (plugin_info->base_name,
  59                      PLUGIN_FINISH,
  60                      on_finish,
  61                      NULL); /* void *user_data */
  62
  63   return 0;
  64 }