test: add missing unit tests for the Atomic template class.

test/unit/atomic.cpp

@@ -0,0 +1,50 @@
+//
+// Lol Engine
+//
+// Copyright: (c) 2010-2013 Sam Hocevar <sam@hocevar.net>
+//   This program is free software; you can redistribute it and/or
+//   modify it under the terms of the Do What The Fuck You Want To
+//   Public License, Version 2, as published by Sam Hocevar. See
+//   http://www.wtfpl.net/ for more details.
+//
+
+#if defined HAVE_CONFIG_H
+#   include "config.h"
+#endif
+
+#include <cmath>
+
+#include "core.h"
+#include "lol/unit.h"
+
+namespace lol
+{
+
+LOLUNIT_FIXTURE(AtomicTest)
+{
+    LOLUNIT_TEST(SingleThread)
+    {
+        Atomic<int> i = 0;
+
+        LOLUNIT_ASSERT_EQUAL(0, (int)i);
+
+        int a1 = i++;
+        LOLUNIT_ASSERT_EQUAL(0, a1);
+        LOLUNIT_ASSERT_EQUAL(1, (int)i);
+
+        int a2 = i--;
+        LOLUNIT_ASSERT_EQUAL(1, a2);
+        LOLUNIT_ASSERT_EQUAL(0, (int)i);
+
+        int a3 = ++i;
+        LOLUNIT_ASSERT_EQUAL(1, a3);
+        LOLUNIT_ASSERT_EQUAL(1, (int)i);
+
+        int a4 = --i;
+        LOLUNIT_ASSERT_EQUAL(0, a4);
+        LOLUNIT_ASSERT_EQUAL(0, (int)i);
+    }
+};
+
+} /* namespace lol */
+