[issue20557] Use specific asserts in io tests

[Serhiy Storchaka]

New submission from Serhiy Storchaka:

The proposed patch makes the io module tests use more specific asserts. This will provide more useful failure report.

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components: Tests
files: test_io_asserts.patch
keywords: patch
messages: 210563
nosy: benjamin.peterson, hynek, pitrou, serhiy.storchaka, stutzbach
priority: normal
severity: normal
stage: patch review
status: open
title: Use specific asserts in io tests
type: enhancement
versions: Python 2.7, Python 3.3, Python 3.4
Added file: http://bugs.python.org/file33982/test_io_asserts.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20557>
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