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305 lines
6.9 KiB
C++
305 lines
6.9 KiB
C++
/* Unit tests for hash-set.h.
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Copyright (C) 2015-2024 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "opts.h"
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#include "hash-set.h"
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#include "selftest.h"
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#if CHECKING_P
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namespace selftest {
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/* Construct a hash_set <const char *> and verify that various operations
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work correctly. */
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static void
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test_set_of_strings ()
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{
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hash_set <const char *> s;
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ASSERT_EQ (0, s.elements ());
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const char *red = "red";
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const char *green = "green";
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const char *blue = "blue";
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ASSERT_EQ (false, s.contains (red));
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for (hash_set<const char *>::iterator it = s.begin (); it != s.end (); ++it)
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ASSERT_EQ (true, false);
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/* Populate the hash_set. */
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ASSERT_EQ (false, s.add (red));
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ASSERT_EQ (false, s.add (green));
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ASSERT_EQ (false, s.add (blue));
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ASSERT_EQ (true, s.add (green));
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/* Verify that the values are now within the set. */
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ASSERT_EQ (true, s.contains (red));
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ASSERT_EQ (true, s.contains (green));
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ASSERT_EQ (true, s.contains (blue));
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ASSERT_EQ (3, s.elements ());
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/* Test removal. */
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s.remove (red);
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ASSERT_EQ (false, s.contains (red));
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ASSERT_EQ (true, s.contains (green));
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ASSERT_EQ (true, s.contains (blue));
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ASSERT_EQ (2, s.elements ());
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s.remove (red);
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ASSERT_EQ (false, s.contains (red));
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ASSERT_EQ (true, s.contains (green));
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ASSERT_EQ (true, s.contains (blue));
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ASSERT_EQ (2, s.elements ());
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int seen = 0;
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for (hash_set<const char *>::iterator it = s.begin (); it != s.end (); ++it)
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{
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int n = *it == green;
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if (n == 0)
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ASSERT_EQ (*it, blue);
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ASSERT_EQ (seen & (1 << n), 0);
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seen |= 1 << n;
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}
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ASSERT_EQ (seen, 3);
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hash_set <const char *, true> t;
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ASSERT_EQ (0, t.elements ());
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ASSERT_EQ (false, t.contains (red));
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for (hash_set<const char *, true>::iterator it = t.begin ();
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it != t.end (); ++it)
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ASSERT_EQ (true, false);
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/* Populate the hash_set. */
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ASSERT_EQ (false, t.add (red));
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ASSERT_EQ (false, t.add (green));
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ASSERT_EQ (false, t.add (blue));
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ASSERT_EQ (true, t.add (green));
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/* Verify that the values are now within the set. */
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ASSERT_EQ (true, t.contains (red));
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ASSERT_EQ (true, t.contains (green));
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ASSERT_EQ (true, t.contains (blue));
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ASSERT_EQ (3, t.elements ());
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seen = 0;
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for (hash_set<const char *, true>::iterator it = t.begin ();
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it != t.end (); ++it)
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{
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int n = 2;
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if (*it == green)
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n = 0;
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else if (*it == blue)
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n = 1;
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else
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ASSERT_EQ (*it, red);
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ASSERT_EQ (seen & (1 << n), 0);
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seen |= 1 << n;
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}
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ASSERT_EQ (seen, 7);
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/* Test removal. */
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t.remove (red);
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ASSERT_EQ (false, t.contains (red));
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ASSERT_EQ (true, t.contains (green));
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ASSERT_EQ (true, t.contains (blue));
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ASSERT_EQ (2, t.elements ());
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t.remove (red);
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ASSERT_EQ (false, t.contains (red));
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ASSERT_EQ (true, t.contains (green));
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ASSERT_EQ (true, t.contains (blue));
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ASSERT_EQ (2, t.elements ());
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}
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typedef class hash_set_test_value_t
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{
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public:
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static int ndefault;
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static int ncopy;
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static int nassign;
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static int ndtor;
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hash_set_test_value_t (int v = 1): pval (&val), val (v)
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{
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++ndefault;
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}
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hash_set_test_value_t (const hash_set_test_value_t &rhs)
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: pval (&val), val (rhs.val)
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{
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++ncopy;
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}
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hash_set_test_value_t& operator= (const hash_set_test_value_t &rhs)
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{
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++nassign;
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val = rhs.val;
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return *this;
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}
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~hash_set_test_value_t ()
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{
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/* Verify that the value hasn't been corrupted. */
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gcc_assert (*pval > 0);
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gcc_assert (pval == &val);
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*pval = -3;
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++ndtor;
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}
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int *pval;
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int val;
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} val_t;
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int val_t::ndefault;
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int val_t::ncopy;
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int val_t::nassign;
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int val_t::ndtor;
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struct value_hash_traits: int_hash<int, -1, -2>
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{
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typedef int_hash<int, -1, -2> base_type;
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typedef val_t value_type;
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typedef value_type compare_type;
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static hashval_t hash (const value_type &v)
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{
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return base_type::hash (v.val);
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}
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static bool equal (const value_type &a, const compare_type &b)
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{
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return base_type::equal (a.val, b.val);
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}
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static void mark_deleted (value_type &v)
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{
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base_type::mark_deleted (v.val);
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}
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static const bool empty_zero_p = false;
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static void mark_empty (value_type &v)
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{
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base_type::mark_empty (v.val);
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}
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static bool is_deleted (const value_type &v)
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{
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return base_type::is_deleted (v.val);
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}
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static bool is_empty (const value_type &v)
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{
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return base_type::is_empty (v.val);
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}
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static void remove (value_type &v)
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{
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v.~value_type ();
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}
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};
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static void
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test_set_of_type_with_ctor_and_dtor ()
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{
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typedef hash_set <val_t, false, value_hash_traits> Set;
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{
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Set s;
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(void)&s;
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}
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ASSERT_TRUE (val_t::ndefault == 0);
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ASSERT_TRUE (val_t::ncopy == 0);
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ASSERT_TRUE (val_t::nassign == 0);
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ASSERT_TRUE (val_t::ndtor == 0);
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{
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Set s;
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ASSERT_EQ (false, s.add (val_t ()));
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ASSERT_EQ (true, 1 == s.elements ());
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}
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ASSERT_TRUE (val_t::ndefault + val_t::ncopy == val_t::ndtor);
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{
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Set s;
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ASSERT_EQ (false, s.add (val_t ()));
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ASSERT_EQ (true, s.add (val_t ()));
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ASSERT_EQ (true, 1 == s.elements ());
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}
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ASSERT_TRUE (val_t::ndefault + val_t::ncopy == val_t::ndtor);
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{
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Set s;
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val_t v1 (1), v2 (2), v3 (3);
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int ndefault = val_t::ndefault;
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int nassign = val_t::nassign;
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ASSERT_EQ (false, s.add (v1));
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ASSERT_EQ (true, s.contains (v1));
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ASSERT_EQ (true, 1 == s.elements ());
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ASSERT_EQ (false, s.add (v2));
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ASSERT_EQ (true, s.contains (v2));
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ASSERT_EQ (true, 2 == s.elements ());
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ASSERT_EQ (false, s.add (v3));
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ASSERT_EQ (true, s.contains (v3));
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ASSERT_EQ (true, 3 == s.elements ());
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ASSERT_EQ (true, s.add (v2));
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ASSERT_EQ (true, s.contains (v2));
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ASSERT_EQ (true, 3 == s.elements ());
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s.remove (v2);
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ASSERT_EQ (true, 2 == s.elements ());
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s.remove (v3);
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ASSERT_EQ (true, 1 == s.elements ());
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/* Verify that no default ctors or assignment operators have
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been called. */
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ASSERT_EQ (true, ndefault == val_t::ndefault);
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ASSERT_EQ (true, nassign == val_t::nassign);
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}
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ASSERT_TRUE (val_t::ndefault + val_t::ncopy == val_t::ndtor);
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}
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/* Run all of the selftests within this file. */
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void
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hash_set_tests_cc_tests ()
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{
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test_set_of_strings ();
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test_set_of_type_with_ctor_and_dtor ();
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}
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} // namespace selftest
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#endif /* #if CHECKING_P */
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