Added printing requirements

zope/interface/tests/test_sorting.py

@@ -0,0 +1,55 @@
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""Test interface sorting
+"""
+
+from unittest import TestCase, TestSuite, main, makeSuite
+
+from zope.interface import Interface
+
+class I1(Interface): pass
+class I2(I1): pass
+class I3(I1): pass
+class I4(Interface): pass
+class I5(I4): pass
+class I6(I2): pass
+
+
+class Test(TestCase):
+
+    def test(self):
+        l = [I1, I3, I5, I6, I4, I2]
+        l.sort()
+        self.assertEqual(l, [I1, I2, I3, I4, I5, I6])
+
+    def test_w_None(self):
+        l = [I1, None, I3, I5, I6, I4, I2]
+        l.sort()
+        self.assertEqual(l, [I1, I2, I3, I4, I5, I6, None])
+    
+    def test_w_equal_names(self):
+        # interfaces with equal names but different modules should sort by
+        # module name
+        from zope.interface.tests.m1 import I1 as m1_I1
+        l = [I1, m1_I1]
+        l.sort()
+        self.assertEqual(l, [m1_I1, I1])
+
+def test_suite():
+    return TestSuite((
+        makeSuite(Test),
+        ))
+
+if __name__=='__main__':
+    main(defaultTest='test_suite')