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Utilities to aid in testing for equality.

Project description

Travis Test Status

This package is pre-alpha. The API may change.

When comparing structures like this dict:

assert actual == {
    'id': 123,
    'created': "2017-11-10T23:59:58",
    'field1': 1,
    ...
}

This fails because ‘id’ and ‘created’ are different every test run. Fix this using:

assert actual == {
    'id': AnyInt(),
    'created': AnyTimestamp(datetime.now(), seconds=3),
    'field1': 1,
    ...
}

AnyInt compares equal to any integer. Timestamp compares equal to string timestamps that are within the given number of seconds.

Compatibility

Python 3.6 and 2.7.

Known Problems

If timestamps are generated locally, in-process, then it’s easier to patch out datetime.now(). But if this is an end-to-end test that hits other services, that might not be an option. That’s when I find AnyTimestamp useful.

This is all hot off the press, so is doubtless full of mistakes.

Alternatives

This doubtless duplicates better work elsewhere. In particular the package ‘equals’ looks very nice, but it’s missing the central feature of ‘equality’, approximate comparison of string timestamps.

Contact

Users’ downloads & documentation: http://pypi.python.org/pypi/equality/
Contributors’ souce & issues: https://github.com/tartley/equality/
Author: Jonathan Hartley, email: tartley at domain tartley.com, Twitter: @tartley.

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