pytest 4.1 compatibility

[gaborbernat]

Resolves #139.

[boxcla]

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[gaborbernat]

CLA signed

[boxcla]

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[gaborbernat]

@Jeff-Meadows can we do a quick release with this?

[RonnyPfannschmidt]

please ensure correct version pins, else this breaks on older pytest versions

[gaborbernat]

flaky does not have any references to pytest, just implicitly. I suppose we could have an if/else to keep the old for older versions. Can we use pytest.__version__ for that?

[RonnyPfannschmidt]

getattr(CallInfo, 'from_call', CallInfo)(...) should be a sufficient way to sort it out

[gaborbernat]

@RonnyPfannschmidt changed.

[RonnyPfannschmidt]

lets add a link to the pr changing the internal api for later comprehension here

[RonnyPfannschmidt]

aka pytest-dev/pytest#4299