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pytest plugin to re-run tests to eliminate flaky failures

Project Description

pytest-rerunfailures

pytest-rerunfailures is a plugin for py.test that re-runs tests to eliminate intermittent failures.

Requirements

You will need the following prerequisites in order to use pytest-rerunfailures:

  • Python 2.7, 3.4, 3.5, 3.6, PyPy, or PyPy3
  • py.test 2.7.3 or newer

Installation

To install pytest-rerunfailures:

$ pip install pytest-rerunfailures

Re-run all failures

To re-run all test failures, use the --reruns command line option with the maximum number of times you’d like the tests to run:

$ py.test --rerun 5

Re-run individual failures

To mark individual tests as flaky, and have them automatically re-run when they fail, add the flaky mark with the maximum number of times you’d like the test to run:

@pytest.mark.flaky(reruns=5)
def test_example():
    import random
    assert random.choice([True, False])

Note that when teardown fails, two reports are generated for the case, one for the test case and the other for the teardown error.

Output

Here’s an example of the output provided by the plugin when run with --reruns 2 and -r aR:

test_report.py RRF

================================== FAILURES ==================================
__________________________________ test_fail _________________________________

    def test_fail():
>       assert False
E       assert False

test_report.py:9: AssertionError
============================ rerun test summary info =========================
RERUN test_report.py::test_fail
RERUN test_report.py::test_fail
============================ short test summary info =========================
FAIL test_report.py::test_fail
======================= 1 failed, 2 rerun in 0.02 seconds ====================

Note that output will show all re-runs. Tests that fail on all the re-runs will be marked as failed.

Compatibility

  • This plugin may not be used with class, module, and package level fixtures.
  • This plugin is not compatible with pytest-xdist’s –looponfail flag.
  • This plugin is not compatible with the core –pdb flag.

Resources

Changelog

3.1 (2017-08-29)

  • Restored compatibility with pytest-xdist. (Thanks to @davehunt for the PR)

3.0 (2017-08-17)

  • Add support for Python 3.6.
  • Add support for pytest 2.9 up to 3.2
  • Drop support for Python 2.6 and 3.3.
  • Drop support for pytest < 2.7.

2.2 (2017-06-23)

  • Ensure that other plugins can run after this one, in case of a global setting --rerun=0. (Thanks to @sublee for the PR)

2.1.0 (2016-11-01)

  • Add default value of reruns=1 if pytest.mark.flaky() is called without arguments.
  • Also offer a distribution as universal wheel. (Thanks to @tltx for the PR)

2.0.1 (2016-08-10)

  • Prepare CLI options to pytest 3.0, to avoid a deprecation warning.
  • Fix error due to missing CHANGES.rst when creating the source distribution by adding a MANIFEST.in.

2.0.0 (2016-04-06)

  • Drop support for Python 3.2, since supporting it became too much of a hassle. (Reason: Virtualenv 14+ / PIP 8+ do not support Python 3.2 anymore.)

1.0.2 (2016-03-29)

  • Add support for --resultlog option by parsing reruns accordingly. (#28)

1.0.1 (2016-02-02)

  • Improve package description and include CHANGELOG into description.

1.0.0 (2016-02-02)

  • Rewrite to use newer API of pytest >= 2.3.0
  • Improve support for pytest-xdist by only logging the final result. (Logging intermediate results will finish the test rather rerunning it.)
Release History

Release History

This version
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3.1

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3.0

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2.2

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2.1.0

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2.0.1

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2.0.0

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1.0.2

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1.0.1

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1.0.0

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0.05

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0.03

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File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
pytest_rerunfailures-3.1-py2.py3-none-any.whl (8.5 kB) Copy SHA256 Checksum SHA256 py2.py3 Wheel Aug 29, 2017
pytest-rerunfailures-3.1.tar.gz (7.9 kB) Copy SHA256 Checksum SHA256 Source Aug 29, 2017

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