[pygobject] Fix tests for Python 3

[Martin Pitt <martinpitt src gnome org>]

commit 16fbb17a9fd17eeb9f886af99e89a214d328dae1
Author: Martin Pitt <martinpitt gnome org>
Date:   Thu May 3 12:25:04 2012 +0200

    Fix tests for Python 3
    
    cmp() does not exist any more in Python 3, replace with comparison operators.
    
    GIMarshallingTests.array_in_nonzero_nonlen() expects a guint8 array, so we
    can't pass a str (which is an Unicode object in Python 3). Pass a byte array
    instead.

 tests/test_gi.py        |    2 +-
 tests/test_overrides.py |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/tests/test_gi.py b/tests/test_gi.py
index 6245b4a..1c42261 100644
--- a/tests/test_gi.py
+++ b/tests/test_gi.py
@@ -745,7 +745,7 @@ class TestArray(unittest.TestCase):
                                                     [1, 2, 3])
 
     def test_array_in_nonzero_nonlen(self):
-        GIMarshallingTests.array_in_nonzero_nonlen(1, 'abcd')
+        GIMarshallingTests.array_in_nonzero_nonlen(1, b'abcd')
 
     def test_array_fixed_out_struct(self):
         struct1, struct2 = GIMarshallingTests.array_fixed_out_struct()
diff --git a/tests/test_overrides.py b/tests/test_overrides.py
index 4f1e5c9..4e3f7d2 100644
--- a/tests/test_overrides.py
+++ b/tests/test_overrides.py
@@ -1251,7 +1251,7 @@ class TestGtk(unittest.TestCase):
                 return -1
             if v2.startswith('m') and not v1.startswith('m'):
                 return 1
-            return cmp(v1, v2)
+            return (v1 > v2) - (v1 < v2)
 
         list_store = Gtk.ListStore(int, str)
         list_store.set_sort_func(2, comp1, None)