Hamcrest number comparison using between

Question

Is there a way in Hamcrest to compare a number within a number range? I am looking for something like this:

assertThat(50L, is(between(12L, 1658L))); 

Answer 1

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>

Answer 2

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.