QPR-11822 fix qle quantext test suite

Author: mgroncki

QuantExt-SWIG/SWIG/qle.i

@@ -26,6 +26,7 @@
 #include <qle/quantext.hpp>
 %}
 
+%include qle_common.i
 %include qle_calendars.i
 %include qle_cashflows.i
 %include qle_indexes.i

QuantExt-SWIG/SWIG/qle_common.i

@@ -0,0 +1,57 @@
+/*
+ Copyright (C) 2023 Quaternion Risk Management Ltd
+ All rights reserved.
+
+ This file is part of ORE, a free-software/open-source library
+ for transparent pricing and risk analysis - http://opensourcerisk.org
+
+ ORE is free software: you can redistribute it and/or modify it
+ under the terms of the Modified BSD License.  You should have received a
+ copy of the license along with this program.
+ The license is also available online at <http://opensourcerisk.org>
+
+ This program is distributed on the basis that it will form a useful
+ contribution to risk analytics and model standardisation, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the license for more details.
+*/
+#ifndef qle_common_i
+#define qle_common_i
+
+%{
+#include<boost/optional.hpp>
+%}
+
+
+#if defined(SWIGPYTHON)
+%typemap(in) boost::optional<bool> %{
+    if($input == Py_None) {
+        $1 = boost::optional<bool>();
+    }
+    else if($input == Py_True){
+        $1 = boost::optional<bool>(true);
+    } else{
+        $1 = boost::optional<bool>(false);
+    }
+%}
+
+%typemap(out) boost::optional<bool> %{
+    if($1) {
+        $result = PyBool_FromBool(*$1);
+    }
+    else {
+        $result = Py_None;
+        Py_INCREF(Py_None);
+    }
+%}
+
+%typecheck (QL_TYPECHECK_BOOL) boost::optional<bool> {
+if (PyBool_Check($input) || Py_None == $input) 
+	$1 = 1;
+else
+	$1 = 0;
+}
+
+#endif
+
+#endif