blob: acbfdb9e9ab2b64ea86f98426aabb3faaa867ed8 [file] [log] [blame]
/* Unit tests for hash-map.h.
Copyright (C) 2015-2019 Free Software Foundation, Inc.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "opts.h"
#include "hash-set.h"
#include "fixed-value.h"
#include "alias.h"
#include "flags.h"
#include "symtab.h"
#include "tree-core.h"
#include "stor-layout.h"
#include "tree.h"
#include "stringpool.h"
#include "selftest.h"
namespace selftest {
/* Construct a hash_map <const char *, int> and verify that
various operations work correctly. */
static void
test_map_of_strings_to_int ()
hash_map <const char *, int> m;
const char *ostrich = "ostrich";
const char *elephant = "elephant";
const char *ant = "ant";
const char *spider = "spider";
const char *millipede = "Illacme plenipes";
const char *eric = "half a bee";
/* A fresh hash_map should be empty. */
ASSERT_EQ (0, m.elements ());
ASSERT_EQ (NULL, m.get (ostrich));
/* Populate the hash_map. */
ASSERT_EQ (false, m.put (ostrich, 2));
ASSERT_EQ (false, m.put (elephant, 4));
ASSERT_EQ (false, m.put (ant, 6));
ASSERT_EQ (false, m.put (spider, 8));
ASSERT_EQ (false, m.put (millipede, 750));
ASSERT_EQ (false, m.put (eric, 3));
/* Verify that we can recover the stored values. */
ASSERT_EQ (6, m.elements ());
ASSERT_EQ (2, *m.get (ostrich));
ASSERT_EQ (4, *m.get (elephant));
ASSERT_EQ (6, *m.get (ant));
ASSERT_EQ (8, *m.get (spider));
ASSERT_EQ (750, *m.get (millipede));
ASSERT_EQ (3, *m.get (eric));
/* Verify removing an item. */
m.remove (eric);
ASSERT_EQ (5, m.elements ());
ASSERT_EQ (NULL, m.get (eric));
m.remove (eric);
ASSERT_EQ (5, m.elements ());
ASSERT_EQ (NULL, m.get (eric));
/* A plain char * key is hashed based on its value (address), rather
than the string it points to. */
char *another_ant = static_cast <char *> (xcalloc (4, 1));
another_ant[0] = 'a';
another_ant[1] = 'n';
another_ant[2] = 't';
another_ant[3] = 0;
ASSERT_NE (ant, another_ant);
unsigned prev_size = m.elements ();
ASSERT_EQ (false, m.put (another_ant, 7));
ASSERT_EQ (prev_size + 1, m.elements ());
/* Need to use string_hash or nofree_string_hash key types to hash
based on the string contents. */
hash_map <nofree_string_hash, int> string_map;
ASSERT_EQ (false, string_map.put (ant, 1));
ASSERT_EQ (1, string_map.elements ());
ASSERT_EQ (true, string_map.put (another_ant, 5));
ASSERT_EQ (1, string_map.elements ());
/* Run all of the selftests within this file. */
hash_map_tests_c_tests ()
test_map_of_strings_to_int ();
} // namespace selftest
#endif /* CHECKING_P */