Add checkers isTrue and isFalse.

[santegoeds]

Add checkers IsTrue & IsFalse.

Use :

c.Assert(0 < 1, IsTrue)
c.Assert(0 > 1, IsFalse)

instead of:

c.Assert(0 < 1, Equals, true)
c.Assert(0 > 1, Equals, false)

[dlsniper]

@niemeyer any updates for this? Thank you.

[niemeyer]

Please see the discussion on #6.

[niemeyer]

I'm not closing this yet, though, to give room for further input.

[ryanbrainard]

I would love to see this merged. When using this library, I'm routinely surprised it does not exist. I know it's only a few less characters, but it just feels so much more natural to say IsTrue.

It kind of reminds me of the difference between:

if foo == true {
   ...
}

vs

if foo {
   ...
}

Of course the first way works, but it looks silly and unnecessary. It would be great if the assertion could be just as terse to say c.Assert(0 < 1), but that's not going to work with the method signature, so I see c.Assert(0 < 1, IsTrue) as good as it's going to get.

[santegoeds]

Closing... Five years should've been enough time for gathering feedback.