[issue3583] test_urllibnet.test_bad_address() fails when using OpenDNS

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

I think the best we can do here is add a message explaining that the error may be due to a broken DNS server (one with a wildcard dns record for all non-existent top level domains).  However, assertRaises, even in context manager form, doesn't take a msg argument (yet).  I've opened an issue with a feature request to fix that and made it a dependency of this issue.

Note that the test uses a domain name ending in ".d", and for a while before that used '.invalid', so the test should not fail if the ISP is only capturing valid top level domains with wildcards, something that seems to be far more common than catching invalid domains.

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dependencies: +assertRaises as a context manager should accept a 'msg' keyword argument.
nosy: +r.david.murray
priority: normal -> low
stage: unit test needed -> needs patch
versions: +Python 3.3 -Python 2.6, Python 3.1

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