equalTo() support for kotlin Sequences

[npryce]

equalTo() support for kotlin Sequences

[npryce]

Kotlin Sequences are not values, so equality doesn't really make sense for sequences. In this case, I would do assertThat(seqA.toList(), equalTo(seqB.toList()).

or even... assertThat(seqA, has(Sequence::toList, equalTo(listOf(1,2,3)))

In general, I find that working type inference, has function, and function/method references let you do a lot things that in Java Hamcrest required ad-hoc behaviour or additional matchers.

[dkandalov]

Yes, .toList() works fine.

After thinking about it a bit more, I agree this is a bad feature request.
In general, it's not clear whether to consume Sequences into lists to compare them or use equals method on Sequence objects which might or might not compare content of sequences. So from library point of view it makes perfect sense to use equality method on objects.

It should've been a Kotlin issue to make sequenceOf(1, 2, 3) produce sequences with equality (e.g. https://youtrack.jetbrains.com/issue/KT-8511).