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git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@35 7ec92016-0320-0410-acc4-a06ded1c099a

tools/RegressionTest/Test_Variant.cpp

@@ -0,0 +1,95 @@
+#if defined(_MSC_VER) && _MSC_VER >= 1300
+#pragma warning (disable : 4503 4244)
+#endif
+
+// 4503:  decorated name length exceeded, name was truncated
+// 4244: 'argument' : conversion from '<tyep1>' to '<type2>', possible loss of data
+
+#include <string>
+#include <cassert>
+#include <iostream>
+#include "Variant.h"
+
+using namespace std;
+
+int main()
+{
+    try 
+    {
+        typedef Variant<TYPELIST_3(string, int, double)> DBField;
+                
+        DBField fld1(string("Hello, world"));
+        DBField fld2(25);
+        DBField fld3(3.14);
+    
+        assert(fld1.TypeId() == typeid(string));
+        assert(fld2.TypeId() == typeid(int));
+    
+        string* p = fld1.GetPtr<string>();
+        assert(p != 0);
+        *p += '!';
+        assert(fld1.Get<std::string>() == "Hello, world!");
+
+        fld3 = fld1;
+        assert(fld1.Get<std::string>() == "Hello, world!");
+        assert(fld3.Get<std::string>() == "Hello, world!");
+
+        fld3 = std::string("Assignment");
+        assert(fld3.Get<std::string>() == "Assignment");
+
+        DBField fld5;
+
+        assert(fld5.TypeId() == typeid(string));
+        assert(fld5.GetPtr<string>()->empty());
+
+        DBField fld4 = fld1;
+        assert(fld4.TypeId() == typeid(string));
+        assert(fld4.Get<std::string>() == "Hello, world!");
+
+        DBField fld(45);
+        float f = fld.ConvertTo<float>();
+        assert(f == 45);
+        (void)f;
+
+        fld2.ChangeType<double>();
+        assert(fld2.Get<double>() == 25);
+
+        typedef Variant<TYPELIST_3(string, int, float)> AlternateDBField;    
+        AlternateDBField fld6(fld1);
+        assert(fld6.Get<std::string>() == "Hello, world!");
+        
+        fld6 = fld3;
+        assert(fld6.Get<std::string>() == "Assignment");
+    
+#if defined(_MSC_VER) && _MSC_VER >= 1300
+        //
+        // Variant with VC non-standard alignment support
+        //
+        typedef TYPELIST_3(string, double, int) DBField2Typelist;
+        typedef Variant<DBField2Typelist, VC_AlignedPOD<DBField2Typelist> > AlternateDBField2;
+
+        AlternateDBField2 fld7(fld6);
+        assert(fld7.Get<std::string>() == "Assignment");
+        
+        fld7 = fld2;
+        assert(fld7.Get<double>() == 25.0);
+
+        enum {
+            OrigAlign = __alignof(fld1),
+            VCExAlign = __alignof(fld7)
+        };
+
+        STATIC_CHECK(OrigAlign == VCExAlign, WrongAlignment);
+
+#endif // def _MSC_VER
+    }
+    catch (const std::exception& e)
+    {
+        cout << "Something weird happened: " << e.what();
+    }
+    catch (...)
+    {
+        cout << "Something really weird happened.";
+    }
+}
+