Tests for Python Bytes/Unicode distinction

Examples/test-suite/python_strict_unicode.i

@@ -0,0 +1,41 @@
+%module python_strict_unicode
+
+%include <std_string.i>
+%include <std_wstring.i>
+
+%begin %{
+#define SWIG_PYTHON_STRICT_BYTE_CHAR
+#define SWIG_PYTHON_STRICT_UNICODE_WCHAR
+%}
+
+%inline %{
+std::string double_str(const std::string& in)
+{
+  return in + in;
+}
+
+char *same_str(char* in)
+{
+  return in;
+}
+
+std::wstring double_wstr(const std::wstring& in)
+{
+  return in + in;
+}
+
+wchar_t *same_wstr(wchar_t* in)
+{
+  return in;
+}
+
+std::wstring overload(const std::wstring& in)
+{
+  return L"UNICODE";
+}
+
+std::string overload(const std::string& in)
+{
+  return "BYTES";
+}
+%}