Py3 test fixes

tests/run/cdef_opt.pyx

 __doc__ = u"""
     >>> a = A()
     >>> a.foo()
-    (True, 'yo')
+    (True, u'yo')
     >>> a.foo(False)
-    (False, 'yo')
-    >>> a.foo(10, 'yes')
-    (True, 'yes')
+    (False, u'yo')
+    >>> a.foo(10, u'yes')
+    (True, u'yes')
+
+    >>> call0()
+    (True, u'yo')
+    >>> call1()
+    (False, u'yo')
+    >>> call2()
+    (False, u'go')
 """
 
+import sys
+
+if sys.version_info[0] >= 3:
+    __doc__ = __doc__.replace(u"u'", u"'")
+
 cdef class A:
-    cpdef foo(self, bint a=True, b="yo"):
+    cpdef foo(self, bint a=True, b=u"yo"):
         return a, b
+
+def call0():
+    a = A()
+    return a.foo()
+
+def call1():
+    a = A()
+    return a.foo(False)
+
+def call2():
+    a = A()
+    return a.foo(False, u"go")

tests/run/iteratorexception.pyx

@@ -4,7 +4,9 @@ __doc__ = u"""
 
 class IteratorAndIterateable:
     def next(self):
-        raise ValueError("")
+        raise ValueError
+    def __next__(self):
+        raise ValueError
     def __iter__(self):
         return self
 
@@ -12,6 +14,6 @@ def f():
     try:
         for x in IteratorAndIterateable():
             pass
-        assert False, "Should not reach this point, iterator has thrown exception"
+        assert False, u"Should not reach this point, iterator has thrown exception"
     except ValueError:
         pass

tests/run/literal_lists.pyx

 __doc__ = u"""
     >>> test_ints(100)
     (100, 100, 100)
-    >>> test_chars("yo")
-    ('a', 'bc', 'yo')
-    >>> test_chars(None)
+    >>> test_chars(b'yo')
+    (b'a', b'bc', b'yo')
+    >>> test_chars(None)       # doctest: +ELLIPSIS
     Traceback (most recent call last):
-    ...
-    TypeError: expected string or Unicode object, NoneType found
+    TypeError: expected ...
     >>> test_struct(-5, -10)
     -5 -10 True
     1 2 False
 """
 
+import sys
+
+if sys.version_info[0] < 3:
+    __doc__ = __doc__.replace(u"b'", u"'")
+
 def test_ints(int x):
     cdef list L = [1,2,3,x]
     cdef int* Li = [1,2,3,x]

tests/run/slice_charptr.pyx

 __doc__ = u"""
-    >>> do_slice("abcdef".encode(u"ASCII"), 2, 3)
-    ('c', 'cdef', 'ab', 'abcdef')
-    >>> do_slice("abcdef".encode(u"ASCII"), 0, 5)
-    ('abcde', 'abcdef', '', 'abcdef')
+    >>> do_slice(b"abcdef", 2, 3)
+    (b'c', b'cdef', b'ab', b'abcdef')
+    >>> do_slice(b"abcdef", 0, 5)
+    (b'abcde', b'abcdef', b'', b'abcdef')
 """
 
+import sys
+
+if sys.version_info[0] < 3:
+    __doc__ = __doc__.replace(u"(b'", u"('").replace(u" b'", u" '")
+
 def do_slice(s, int i, int j):
     cdef char* ss = s
     return ss[i:j], ss[i:], ss[:i], ss[:]

tests/run/unsigned.pyx

-__doc__ = u"""
+import sys
+
+if sys.version_info[0] >= 3:
+    __doc__ = u"""
+    >>> test_signed()
+    3 <class 'int'>
+    9 <class 'int'>
+    6 <class 'int'>
+    12 <class 'int'>
+"""
+else:
+    __doc__ = u"""
     >>> test_signed()
     3 <type 'int'>
     9 <type 'long'>
@@ -6,7 +17,6 @@ __doc__ = u"""
     12 <type 'long'>
 """
 
-
 cdef int i = 1
 cdef long l = 2
 cdef unsigned int ui = 4