minmax_macro v0.1

[SVN r3105]

minmax_macro/test/promotions.cpp

@@ -0,0 +1,54 @@
+///////////////////////////////////////////////////////////////////////////////
+// promotions.hpp test file
+//
+// Copyright 2006 Eric Niebler.
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#include <boost/test/unit_test.hpp>
+#include <boost/mpl/assert.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/algorithm/minmax_macro.hpp>
+
+template<typename Result, typename T> void check_is_same(T)
+{
+    BOOST_MPL_ASSERT((boost::is_same<T,Result>));
+}
+
+void test_promotions()
+{
+    char ch = 0;
+    short sh = 0;
+    int in = 0;
+    unsigned un = 0;
+    float fl = 0;
+    double db = 0;
+
+    check_is_same<int>(BOOST_MIN(ch,sh));
+    check_is_same<int>(BOOST_MAX(ch,sh));
+    check_is_same<int>(BOOST_MIN(ch,in));
+    check_is_same<int>(BOOST_MAX(ch,in));
+
+    check_is_same<unsigned>(BOOST_MIN(un,in));
+    check_is_same<unsigned>(BOOST_MAX(un,in));
+
+    check_is_same<float>(BOOST_MIN(in,fl));
+    check_is_same<float>(BOOST_MAX(in,fl));
+
+    check_is_same<double>(BOOST_MIN(db,fl));
+    check_is_same<double>(BOOST_MAX(db,fl));
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// init_unit_test_suite
+//
+boost::unit_test::test_suite* init_unit_test_suite( int argc, char* argv[] )
+{
+    boost::unit_test::test_suite *test = BOOST_TEST_SUITE("promotions min/max test");
+
+    test->add(BOOST_TEST_CASE(&test_promotions));
+
+    return test;
+}