[issue1959] test_contains.py converted to unittest

[Giampaolo Rodola']

New submission from Giampaolo Rodola':

In attachment. All existent tests are unchanged.

----------
components: Tests
files: test_contains.diff
messages: 61803
nosy: giampaolo.rodola
severity: normal
status: open
title: test_contains.py converted to unittest
type: rfe
versions: Python 2.6
Added file: http://bugs.python.org/file9313/test_contains.diff

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