Add bitset unit tests

Author: falbrechtskirchinger

tests/testEnumUtils.cpp

@@ -0,0 +1,79 @@
+// Copyright (C) 2005 - 2023 Settlers Freaks (sf-team at siedler25.org)
+//
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "s25util/enumUtils.h"
+#include <boost/test/unit_test.hpp>
+#include <sstream>
+
+enum class InvalidBitset : int
+{
+};
+template<>
+struct IsBitset<InvalidBitset> : std::true_type
+{};
+
+enum class Bitset : unsigned
+{
+    None,
+    A = 1 << 0,
+    B = 1 << 1,
+    C = 1 << 2
+};
+MAKE_BITSET_STRONG(Bitset);
+
+// Check type traits
+static_assert(IsBitset<InvalidBitset>::value);
+static_assert(!IsValidBitset<InvalidBitset>);
+
+static_assert(IsBitset<Bitset>::value);
+static_assert(IsValidBitset<Bitset>);
+
+BOOST_AUTO_TEST_SUITE(EnumUtils)
+
+BOOST_AUTO_TEST_CASE(Operators)
+{
+    BOOST_REQUIRE(static_cast<unsigned>(Bitset{}) == 0);
+
+    {
+        Bitset b{};
+        b = b | Bitset::A;
+        BOOST_TEST(static_cast<unsigned>(b) == 0x01u);
+        b |= Bitset::B;
+        BOOST_TEST(static_cast<unsigned>(b) == 0x03u);
+    }
+
+    {
+        Bitset b = Bitset::A | Bitset::B | Bitset::C;
+        b = b & (Bitset::A | Bitset::B);
+        BOOST_TEST(static_cast<unsigned>(b) == 0x03u);
+        b &= Bitset::B;
+        BOOST_TEST(static_cast<unsigned>(b) == 0x02u);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(UtilityFunctions)
+{
+    Bitset b = Bitset::A | Bitset::C;
+    BOOST_TEST(bitset::isSet(b, Bitset::A));
+    BOOST_TEST(bitset::isSet(b, Bitset::A | Bitset::C));
+    BOOST_TEST(!bitset::isSet(b, Bitset::B));
+    BOOST_TEST(!bitset::isSet(b, Bitset::B | Bitset::C));
+
+    b = bitset::set(b, Bitset::B /*, true */);
+    BOOST_TEST(static_cast<unsigned>(b) == 0x07u);
+
+    b = bitset::set(b, Bitset::B, false);
+    BOOST_TEST(static_cast<unsigned>(b) == 0x05u);
+
+    b = bitset::clear(b, Bitset::A);
+    BOOST_TEST(static_cast<unsigned>(b) == 0x04u);
+
+    b = bitset::toggle(b, Bitset::A);
+    BOOST_TEST(static_cast<unsigned>(b) == 0x05u);
+
+    b = bitset::toggle(b, Bitset::A | Bitset::B);
+    BOOST_TEST(static_cast<unsigned>(b) == 0x06u);
+}
+
+BOOST_AUTO_TEST_SUITE_END()