More tests and fixes

Author: vpiotr

include/details/xnode_builtins.h

@@ -11,6 +11,7 @@
 #define __XNODE_BUILTINS_H__
 
 #include <string>
+#include <cmath>
 #include "xnode_type_ext.h"
 
 /// \file xnode_builtins.h
@@ -2204,11 +2205,21 @@ class xnode_caster<bool, xnode_def_cast_policy> : xnode_caster_base {
                 break;
             }
             case xnode_type_code<float>::value: {
-                output = static_cast<ValueType>(xnode_get_scalar<float>(storage) != 0.0f);
+                float value = xnode_get_scalar<float>(storage);
+                if (!std::isnan(value)) {
+                    output = static_cast<ValueType>(value != 0.0f);
+                } else {
+                    result = false;
+                }
                 break;
             }
             case xnode_type_code<double>::value: {
-                output = static_cast<ValueType>(xnode_get_scalar<double>(storage) != 0.0);
+                double value = xnode_get_scalar<double>(storage);
+                if (!std::isnan(value)) {
+                    output = static_cast<ValueType>(value != 0.0);
+                } else {
+                    result = false;
+                }
                 break;
             }
             // -- signed integers --

test/cunit.h

@@ -12,6 +12,7 @@
 
 #include <string>
 #include <stdexcept>
+#include <sstream>
 
 /// \file cunit.h
 /// Unit testing utility functions
@@ -47,6 +48,27 @@ inline void AssertTrue(bool assertion, const std::string &message) {
     Assert(assertion, message);
 }
 
+template <typename T, typename U>
+inline void AssertEquals(T expected, U actual, const std::string &message) {
+    if (!(expected == actual)) {
+        std::ostringstream oss;
+        oss << "assertion equals failed: [" << message << "] expected: [" << expected << "] actual: [" << actual << "]";
+        throw std::runtime_error(oss.str());
+    }
+}
+
+template <typename T, typename U>
+inline void AssertEquals(T expected, U actual, const char *message = NULL) {
+    if (!(expected == actual)) {
+        std::ostringstream oss;
+        oss << "assertion equals failed: ";
+        if (message != NULL)
+            oss << "[" << message << "] ";
+        oss << "expected: [" << expected << "] actual: [" << actual << "]";
+        throw std::runtime_error(oss.str());
+    }
+}
+
 template <typename Func>
 inline void AssertThrows(Func assertion, const char *message = NULL)
 {