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Non-deterministic test needs a little ?SOMETIMES #13

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merged 1 commit into from Feb 20, 2018
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russelldb
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prop_quantile/0 is by it's nature non-deterministic, and the
comments/notes make it clear. Rather than tolerate it breaking the build
periodically, this commit changes the property by using eqc's
?SOMETIMES macro. If a test fails 3 times in a row then we assume that
it is a deterministic failure, a bug. Otherwise, assume it is the noted
"loosy goosy" nature of the comparison and pass the property. NOTE:
still think we should find and fit the error bounds.

prop_quantile/0 is by it's nature non-deterministic, and the
comments/notes make it clear. Rather than tolerate it breaking the build
periodically, this commit changes the property by using eqc's
`?SOMETIMES` macro. If a test fails 3 times in a row then we assume that
it is a deterministic failure, a bug. Otherwise, assume it is the noted
"loosy goosy" nature of the comparison and pass the property. NOTE:
still think we should find and fit the error bounds.
@martincox
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+1. +10 for loosy goosy 😄

@russelldb russelldb merged commit 2ebff3f into master Feb 20, 2018
@russelldb russelldb deleted the develop-2.2.5 branch February 20, 2018 13:27
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2 participants