Hamcrest number comparison using between

An alternative to Jeff's solution is to use both:

assertThat(50L, is(both(greaterThan(12L)).and(lessThan(1658L))));

I think that's quite readable. You also get a good error message in case the check failed:

Expected: is (a value greater than <50L> and a value less than <1658L>) got: <50L>

I don't believe between is part of the core hamcrest matchers, but you could do something like this:

assertThat(number, allOf(greaterThan(min),lessThan(max)));

That's still a little ugly, so you could create a helper method between

assertThat(number, between(min,max))

and between looks like

allOf(greaterThan(min),lessThan(max))

Still not a fantastic solution, but it reads like a hamcrest matcher.

If you can't find one that's publicly available, it would be trivial to write your own between matcher http://code.google.com/p/hamcrest/wiki/Tutorial.

If you're dealing with integers, you should consider using the closeTo method:

assertThat((double)nclient, is(closeTo(nserver, 1d)));

unfortunately, there's no closeTo for integers, but every 32 bit integer is representable by a double, so you can simply cast them to doubles, and carry on.

This is not exactly equivalent to between, but can sometimes be helpful.