gdb/unittests/cli-utils-selftests.c

   1 /* Unit tests for the cli-utils.c file.
   2
   3    Copyright (C) 2018-2019 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 #include "defs.h"
  21 #include "cli/cli-utils.h"
  22 #include "common/selftest.h"
  23
  24 namespace selftests {
  25 namespace cli_utils {
  26
  27 static void
  28 test_number_or_range_parser ()
  29 {
  30   /* Test parsing a simple integer.  */
  31   {
  32     number_or_range_parser one ("1");
  33
  34     SELF_CHECK (!one.finished ());
  35     SELF_CHECK (one.get_number () == 1);
  36     SELF_CHECK (one.finished ());
  37     SELF_CHECK (strcmp (one.cur_tok (), "") == 0);
  38   }
  39
  40   /* Test parsing an integer followed by a non integer.  */
  41   {
  42     number_or_range_parser one_after ("1 after");
  43
  44     SELF_CHECK (!one_after.finished ());
  45     SELF_CHECK (one_after.get_number () == 1);
  46     SELF_CHECK (one_after.finished ());
  47     SELF_CHECK (strcmp (one_after.cur_tok (), "after") == 0);
  48   }
  49
  50   /* Test parsing a range.  */
  51   {
  52     number_or_range_parser one_three ("1-3");
  53
  54     for (int i = 1; i < 4; i++)
  55       {
  56         SELF_CHECK (!one_three.finished ());
  57         SELF_CHECK (one_three.get_number () == i);
  58       }
  59     SELF_CHECK (one_three.finished ());
  60     SELF_CHECK (strcmp (one_three.cur_tok (), "") == 0);
  61   }
  62
  63   /* Test parsing a range followed by a non-integer.  */
  64   {
  65     number_or_range_parser one_three_after ("1-3 after");
  66
  67     for (int i = 1; i < 4; i++)
  68       {
  69         SELF_CHECK (!one_three_after.finished ());
  70         SELF_CHECK (one_three_after.get_number () == i);
  71       }
  72     SELF_CHECK (one_three_after.finished ());
  73     SELF_CHECK (strcmp (one_three_after.cur_tok (), "after") == 0);
  74   }
  75
  76   /* Test a negative integer gives an error.  */
  77   {
  78     number_or_range_parser minus_one ("-1");
  79
  80     SELF_CHECK (!minus_one.finished ());
  81     try
  82       {
  83         minus_one.get_number ();
  84         SELF_CHECK (false);
  85       }
  86     catch (const gdb_exception_error &ex)
  87       {
  88         SELF_CHECK (ex.reason == RETURN_ERROR);
  89         SELF_CHECK (ex.error == GENERIC_ERROR);
  90         SELF_CHECK (strcmp (ex.what (), "negative value") == 0);
  91         SELF_CHECK (strcmp (minus_one.cur_tok (), "-1") == 0);
  92       }
  93   }
  94
  95   /* Test that a - followed by not a number does not give an error.  */
  96   {
  97     number_or_range_parser nan ("-whatever");
  98
  99     SELF_CHECK (nan.finished ());
 100     SELF_CHECK (strcmp (nan.cur_tok (), "-whatever") == 0);
 101   }
 102 }
 103
 104 static void
 105 test_parse_flags ()
 106 {
 107   const char *flags = "abc";
 108   const char *non_flags_args = "non flags args";
 109
 110   /* Extract twice the same flag, separated by one space.  */
 111   {
 112     const char *t1 = "-a -a non flags args";
 113
 114     SELF_CHECK (parse_flags (&t1, flags) == 1);
 115     SELF_CHECK (parse_flags (&t1, flags) == 1);
 116     SELF_CHECK (strcmp (t1, non_flags_args) == 0);
 117   }
 118
 119   /* Extract some flags, separated by one or more spaces.  */
 120   {
 121     const char *t2 = "-c     -b -c  -b -c    non flags args";
 122
 123     SELF_CHECK (parse_flags (&t2, flags) == 3);
 124     SELF_CHECK (parse_flags (&t2, flags) == 2);
 125     SELF_CHECK (parse_flags (&t2, flags) == 3);
 126     SELF_CHECK (parse_flags (&t2, flags) == 2);
 127     SELF_CHECK (parse_flags (&t2, flags) == 3);
 128     SELF_CHECK (strcmp (t2, non_flags_args) == 0);
 129   }
 130
 131   /* Check behaviour where there is no flag to extract.  */
 132   {
 133     const char *t3 = non_flags_args;
 134
 135     SELF_CHECK (parse_flags (&t3, flags) == 0);
 136     SELF_CHECK (strcmp (t3, non_flags_args) == 0);
 137   }
 138
 139   /* Extract 2 known flags in front of unknown flags.  */
 140   {
 141     const char *t4 = "-c -b -x -y -z -c";
 142
 143     SELF_CHECK (parse_flags (&t4, flags) == 3);
 144     SELF_CHECK (parse_flags (&t4, flags) == 2);
 145     SELF_CHECK (strcmp (t4, "-x -y -z -c") == 0);
 146     SELF_CHECK (parse_flags (&t4, flags) == 0);
 147     SELF_CHECK (strcmp (t4, "-x -y -z -c") == 0);
 148   }
 149
 150   /* Check combined flags are not recognised.  */
 151   {
 152     const char *t5 = "-c -cb -c";
 153
 154     SELF_CHECK (parse_flags (&t5, flags) == 3);
 155     SELF_CHECK (parse_flags (&t5, flags) == 0);
 156     SELF_CHECK (strcmp (t5, "-cb -c") == 0);
 157   }
 158 }
 159
 160 static void
 161 test_parse_flags_qcs ()
 162 {
 163   const char *non_flags_args = "non flags args";
 164
 165   /* Test parsing of 2 flags out of the known 3.  */
 166   {
 167     const char *t1 = "-q -s    non flags args";
 168     qcs_flags flags;
 169
 170     SELF_CHECK (parse_flags_qcs ("test_parse_flags_qcs.t1.q",
 171                                  &t1,
 172                                  &flags) == 1);
 173     SELF_CHECK (flags.quiet && !flags.cont && !flags.silent);
 174     SELF_CHECK (parse_flags_qcs ("test_parse_flags_qcs.t1.s",
 175                                  &t1,
 176                                  &flags) == 1);
 177     SELF_CHECK (flags.quiet && !flags.cont && flags.silent);
 178     SELF_CHECK (strcmp (t1, non_flags_args) == 0);
 179   }
 180
 181   /* Test parsing when there is no flag.  */
 182   {
 183     const char *t2 = "non flags args";
 184     qcs_flags flags;
 185
 186     SELF_CHECK (parse_flags_qcs ("test_parse_flags_qcs.t2",
 187                                  &t2,
 188                                  &flags) == 0);
 189     SELF_CHECK (!flags.quiet && !flags.cont && !flags.silent);
 190     SELF_CHECK (strcmp (t2, non_flags_args) == 0);
 191   }
 192
 193   /* Test parsing stops at a negative integer.  */
 194   {
 195     const char *t3 = "-123 non flags args";
 196     const char *orig_t3 = t3;
 197     qcs_flags flags;
 198
 199     SELF_CHECK (parse_flags_qcs ("test_parse_flags_qcs.t3",
 200                                  &t3,
 201                                  &flags) == 0);
 202     SELF_CHECK (!flags.quiet && !flags.cont && !flags.silent);
 203     SELF_CHECK (strcmp (t3, orig_t3) == 0);
 204   }
 205
 206   /* Test mutual exclusion between -c and -s.  */
 207   {
 208     const char *t4 = "-c -s non flags args";
 209     qcs_flags flags;
 210
 211     try
 212       {
 213         SELF_CHECK (parse_flags_qcs ("test_parse_flags_qcs.t4.cs",
 214                                      &t4,
 215                                      &flags) == 1);
 216
 217         (void) parse_flags_qcs ("test_parse_flags_qcs.t4.cs",
 218                                 &t4,
 219                                 &flags);
 220         SELF_CHECK (false);
 221       }
 222     catch (const gdb_exception_error &ex)
 223       {
 224         SELF_CHECK (ex.reason == RETURN_ERROR);
 225         SELF_CHECK (ex.error == GENERIC_ERROR);
 226         SELF_CHECK
 227           (strcmp (ex.what (),
 228                    "test_parse_flags_qcs.t4.cs: "
 229                    "-c and -s are mutually exclusive") == 0);
 230       }
 231   }
 232
 233 }
 234
 235 static void
 236 test_cli_utils ()
 237 {
 238   selftests::cli_utils::test_number_or_range_parser ();
 239   selftests::cli_utils::test_parse_flags ();
 240   selftests::cli_utils::test_parse_flags_qcs ();
 241 }
 242
 243 }
 244 }
 245
 246 void
 247 _initialize_cli_utils_selftests ()
 248 {
 249   selftests::register_test ("cli_utils",
 250                             selftests::cli_utils::test_cli_utils);
 251 }