75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
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// (C) Copyright Jeremy Siek 2002.
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/pending/disjoint_sets.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <boost/cstdlib.hpp>
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template < typename DisjointSet > struct test_disjoint_set
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{
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static void do_test()
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{
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// The following tests are pretty lame, just a basic sanity check.
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// Industrial strength tests still need to be written.
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#if !defined(__MWERKS__) || __MWERKS__ > 0x3003
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std::size_t elts[]
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#else
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std::size_t elts[4]
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#endif
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= { 0, 1, 2, 3 };
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const int N = sizeof(elts) / sizeof(*elts);
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DisjointSet ds(N);
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ds.make_set(elts[0]);
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ds.make_set(elts[1]);
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ds.make_set(elts[2]);
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ds.make_set(elts[3]);
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BOOST_TEST(ds.find_set(0) != ds.find_set(1));
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BOOST_TEST(ds.find_set(0) != ds.find_set(2));
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BOOST_TEST(ds.find_set(0) != ds.find_set(3));
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BOOST_TEST(ds.find_set(1) != ds.find_set(2));
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BOOST_TEST(ds.find_set(1) != ds.find_set(3));
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BOOST_TEST(ds.find_set(2) != ds.find_set(3));
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ds.union_set(0, 1);
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ds.union_set(2, 3);
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BOOST_TEST(ds.find_set(0) != ds.find_set(3));
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int a = ds.find_set(0);
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BOOST_TEST(a == ds.find_set(1));
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int b = ds.find_set(2);
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BOOST_TEST(b == ds.find_set(3));
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ds.link(a, b);
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BOOST_TEST(ds.find_set(a) == ds.find_set(b));
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BOOST_TEST(1 == ds.count_sets(elts, elts + N));
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ds.normalize_sets(elts, elts + N);
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ds.compress_sets(elts, elts + N);
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BOOST_TEST(1 == ds.count_sets(elts, elts + N));
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}
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};
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int main(int, char*[])
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{
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using namespace boost;
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{
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typedef disjoint_sets_with_storage< identity_property_map,
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identity_property_map, find_with_path_halving >
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ds_type;
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test_disjoint_set< ds_type >::do_test();
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}
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{
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typedef disjoint_sets_with_storage< identity_property_map,
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identity_property_map, find_with_full_path_compression >
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ds_type;
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test_disjoint_set< ds_type >::do_test();
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}
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return boost::report_errors();
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}
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