cypclass typecast unit test

nogil_test/cypclass_test_typecast.pyx

+cdef cypclass SomeMemory:
+    int a
+
+    unsigned int __unsigned_int__(self):
+        return <unsigned int> self.a
+
+    int __int__(self):
+        return self.a
+
+cpdef bag():
+  cdef SomeMemory o = SomeMemory()
+  o.a = -1
+  return str(<int> o) + '\n' + str(<unsigned int> o)
+

nogil_test/cypclass_test_typecast_distutil.py

+from distutils.core import setup
+from distutils.extension import Extension
+from Cython.Build import cythonize
+
+setup(
+    ext_modules = cythonize([
+        Extension(
+            'cypclass_test_typecast',
+            language='c++',
+            sources=['cypclass_test_typecast.pyx'],
+            extra_compile_args=["-pthread", "-std=c++11"],
+        ),
+    ])
+)
+