Introduce numerical comparisons

[MarkusAmshove]

Issue: #17

• shouldBeGreaterOrEqualTo
• shouldBeGreaterThan
• shouldBeLessOrEqualTo
• shouldBeLessThan
• shouldBePositive
• shouldBeNegative
• shouldBeInRange

[MarkusAmshove]

I'm finished implementing those methods.

What do you think @goreRatzete ?

You can see those "in action" in the unittests:
https://github.com/MarkusAmshove/Kluent/tree/numerical-assertions/src/test/kotlin/org/amshove/kluent/tests/assertions/numerical

[AndreasVolkmann]

Looking good!

What about something like this for ranges also ?

infix fun Number.shouldBeInRange(range: IntRange) = if (this in range) Unit else throw Exception()

@Test
fun shouldbe() {
    5 shouldBeInRange 4..10

    -100 shouldBeInRange -200..1000

}

[MarkusAmshove]

You're right, didn't know about that.

There seem to be a couple that we can use:

https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.ranges/index.html

[AndreasVolkmann]

Looks good!