ShouldBeGreaterThanOrEqualTo

[mps]

Added this method which exists in the NUnit core as well.

[xerxesb]

Hi Matt,

I'm undecided whether I want to put this change through for two reasons:

1. I don't want to pollute intellisense with more ShouldBe extensions if they're not necessary. Perhaps there is another alternative syntax which is just as palatable and extends across many other scenarios, too
2. If we did add ShouldBeGreaterThanOrEqualTo, we should add a ShouldBeLessThanOrEqualTo at the same time to keep parity, so this particular commit doesn't have everything we'd need

Anyone else have an opinion on the matter?

[mps]

Since we're improving upon the syntax of basic assertions and the assertion is in the framework we are extending I think it is a valid addition.

[PandaWood]

Yes, I'm still thinking about the pollution.
Actually, at this stage, I'm inclined to be more liberal & start trimming later (I must admit, the project I'm using needed a GreaterThan - but not a LessThan).
I felt a bit sorry for the pull request and I'd already added some tests to it so I pulled it in.
I think we'll carry the pollution conversation forward and keep thinking about this.

[xerxesb]

Yep - need to be conscious of any Should methods added - removing them later is a breaking change, which i'd like to avoid if possible.