Write a trivial NUnit test

- [Instructor] I'm just going to comment out this open for now,…because that's a thing that shouldn't exist.…And we're going to think about how we're going to write tests.…A common way of doing this is to declare a type,…and you might remember from the previous module,…that you can just give a type a class name.…So it could be something like that.…But that's not very useful for testing.…It would be quite nice if we could name our test…in English, and you certainly can.…You just surround any identifier in F# with backticks,…and then you can use spaces in the names and stuff.…

Every type declaration of this kind needs…some constructive parameters, even if that's an empty list.…And then we say equals, and then the individual tests…are going to be methods within that type.…So as always, with NUnit, we've put an attribute on them…called Test, then you declare the member of a class type…in F# with member, this. and then we need a name…for the test. And once again,…backticks and you can have a whole sentence.…

Now I'm not construvating at all on the actual functionality…