Add pending tests

[bastos]

pending function ignores the block passed (Issue #16).

[modocache]

You should import Foundation at the top of this file to prevent warnings when using NSLog.

[bastos]

👍 Sorry, I will fix it.

[modocache]

What this Pull Request Does

OK, I think this is a good start. Since all example groups are compiled at the very beginning, before any tests are actually run, these pending blocks print before the rest of the test output:

2014-06-14 10:28:38.338 xctest[22961:303] Pending: Pending Spec
2014-06-14 10:28:38.351 xctest[22961:303] Pending: contains an it block
Test Suite 'All tests' started at 2014-06-14 01:26:56 +0000
...

What Specta Does

Specta produces something like this, at the very end of the test output:

3 tests; 0 skipped; 1 failure; 1 exception; 1 pending

Furthermore, Specta pending examples are displayed in the test navigator. That's because they're registered as examples, just ones with nil closures. So they're reported to XCTest as test methods, but when it comes time to run them they don't do anything. And since they don't fail, they appear in the test navigator with green check marks.

Also, while Kiwi displays warnings in Xcode, Specta does not. In any case, it's probably impossible to display a warning in Swift at this point anyway (Swift doesn't support #pragma declarations).

What Quick Should Do

So my new set of goals for pending is:

1. Report the example is pending to Quick's test reporter (see Support custom output formatters #9)
2. Do not display the example in the test navigator (or, if possible, display it with a gray check mark)
3. Do not print anything directly to stdout/stderr (such as by using println or NSLog)
4. Do not highlight the pending line with a warning in Xcode (I want to, but I think it's impossible at this point)

This pull request is probably the best we can do on the 4 goals above until I implement custom output formatters as part of #9.

@bastos Thanks for the pull request! I had a few comments, but I'll merge as soon as you address those. Ping me @modocache once you're done or if you have any questions!

[bastos]

@modocache Done.

Yes, I agree with you, we need a better way to report pending tests, this implementation is very simple. Must be improved later.

About the #pragma, you are right, Swift doesn't have it and I couldn't find anything similar.

[modocache]

Merged! Thanks, @bastos! 🌟