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Add PredicateMatcher that takes an arbitrary predicate functions

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Also adds `Predicate` helper function to create `PredicateMatcher`.
Because of limitations in type inference it needs to be explicitly
typed, like so
`Predicate<std::string>([](std::string const& str) { ... })`.
It also takes an optional second argument for description of the
predicate.

It is possible to infer the argument with sufficient TMP, see
https://stackoverflow.com/questions/43560492/how-to-extract-lambdas-return-type-and-variadic-parameters-pack-back-from-gener/43561563#43561563
but I don't think that the magic is worth introducing ATM.

Closes #1236
This commit is contained in:
Martin Hořeňovský
2018-04-03 23:28:14 +02:00
parent dfb83f20e9
commit 1ca8f43b01
11 changed files with 204 additions and 7 deletions
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projects/SelfTest/Baselines/console.std.approved.txt
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@@ -1084,6 +1084,6 @@ due to unexpected exception with message:
Why would you throw a std::string?
===============================================================================
test cases: 203 | 150 passed | 49 failed | 4 failed as expected
assertions: 1057 | 929 passed | 107 failed | 21 failed as expected
test cases: 204 | 151 passed | 49 failed | 4 failed as expected
assertions: 1061 | 933 passed | 107 failed | 21 failed as expected