Add test to demonstrate error with find_noncopyable_vars (#71)

The test is not run by the test suite for the moment.

Author: iMichka

unittests/data/test_stream.hpp

@@ -0,0 +1,18 @@
+// Copyright 2014-2016 Insight Software Consortium.
+// Copyright 2004-2008 Roman Yakovenko.
+// Distributed under the Boost Software License, Version 1.0.
+// See http://www.boost.org/LICENSE_1_0.txt
+
+#include <sstream>
+
+namespace Test2 {
+
+class FileStreamDataStream {
+  public:
+    FileStreamDataStream(const std::istream* s) {}
+
+  protected:
+    std::istream* mInStream;
+  };
+}
+

unittests/test_stream.py

@@ -0,0 +1,47 @@
+# Copyright 2014-2016 Insight Software Consortium.
+# Copyright 2004-2009 Roman Yakovenko.
+# Distributed under the Boost Software License, Version 1.0.
+# See http://www.boost.org/LICENSE_1_0.txt
+
+import unittest
+import parser_test_case
+
+from pygccxml import parser
+from pygccxml import declarations
+
+
+class Test(parser_test_case.parser_test_case_t):
+
+    def __init__(self, *args):
+        parser_test_case.parser_test_case_t.__init__(self, *args)
+        self.header = "test_stream.hpp"
+        self.config.cflags = "-std=c++11"
+
+    def test_stream_non_copyable(self):
+        """
+        Test find_noncopyable_vars
+
+        See #71
+
+        find_noncopyable_vars is throwing:
+        RuntimeError: maximum recursion depth exceeded while
+        calling a Python object
+        """
+        decls = parser.parse([self.header], self.config)
+        global_ns = declarations.get_global_namespace(decls)
+
+        test_ns = global_ns.namespace('Test2')
+        cls = test_ns.class_('FileStreamDataStream')
+        declarations.type_traits_classes.find_noncopyable_vars(cls)
+
+def create_suite():
+    suite = unittest.TestSuite()
+    suite.addTest(unittest.makeSuite(Test))
+    return suite
+
+
+def run_suite():
+    unittest.TextTestRunner(verbosity=2).run(create_suite())
+
+if __name__ == "__main__":
+    run_suite()