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Drop duplicated tests by default #1609

nicoddemus opened this Issue Jun 14, 2016 · 1 comment


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nicoddemus commented Jun 14, 2016

py.test will happily run the same tests more than once if you provide multiple path arguments which contain the same test files:

py.test model/tests model

This will execute all tests from model/tests twice.

While there are some edge use cases where this useful (#1187), it seems in general users are confounded by this behavior more than delighted it exists (#1607).

I think we should discuss if we should drop duplicated tests by default, perhaps introducing a new --keep-duplicates if we want to preserve the old behavior.

EDIT: if we decide to keep running duplicated tests, we should at least document the behavior (see comment), possibly mentioning pytest-drop-dup-tests as a workaround.

@nicoddemus nicoddemus added this to the 3.0 milestone Jun 14, 2016


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RonnyPfannschmidt commented Jun 14, 2016

i#d be happy to see this removed as well,
note that this will break a number of plugins doing alternative collection due to duplicate node-ids
it would also allow us to turn back on the pytest-xdist implementation detail that uses collection index instead of nodeid

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