extensive test case for unicode literals

tests/run/unicodeliterals.pyx

+# -*- coding: utf-8 -*-
+
+__doc__ = r"""
+    >>> sa
+    'abc'
+    >>> ua
+    u'abc'
+    >>> b
+    u'123'
+    >>> c
+    u'S\xf8k ik'
+    >>> d
+    u'\xfc\xd6\xe4'
+    >>> e
+    u'\x03g\xf8\uf8d2S\xf8k ik'
+    >>> f
+    u'\xf8'
+    >>> add
+    u'S\xf8k ik\xfc\xd6\xe4abc'
+""" + u"""
+    >>> sa == 'abc'
+    True
+    >>> ua == u'abc'
+    True
+    >>> b == u'123'
+    True
+    >>> c == u'Søk ik'
+    True
+    >>> d == u'üÖä'
+    True
+    >>> e == u'\x03\x67\xf8\uf8d2Søk ik'
+    True
+    >>> f == u'\xf8'
+    True
+    >>> add == u'Søk ik' + u'üÖä' + 'abc'
+    True
+"""
+
+sa = 'abc'
+ua = u'abc'
+
+b = u'123'
+c = u'Søk ik'
+d = u'üÖä'
+e = u'\x03\x67\xf8\uf8d2Søk ik'
+f = u'\xf8'
+
+add = u'Søk ik' + u'üÖä' + 'abc'