Provide assertion for Java8 predicates

[jangalinski]

Summary

I want to simply assert the behavior of a predicate without evaluating it first

Example

// given some Predicate

Predicate<String> startsWithA = s -> s.startsWith("a");

// instead of
assertThat(startsWithA.test("abc")).isTrue();

// I want to write
assertThat(startsWithA).isTrueFor("abc");

Java 8 specific ?

• YES : create Pull Request from the master branch

Remark: looks like a minor change and I would be happy tp provide the PR. Just let me know what you think (or if this is already possible somehow and I missed it).

[filiphr]

This is already implemented. See #658.

It should come out in the next release.

[jangalinski]

Cool, thanks. closing this one then.