Before and after hooks

Specify provides the following functions for providing an environment in which an example is implemented:

beforeEach(^{ ... });
afterEach(^{ ... });

before(^{ ... }); // Identical to beforeEach(^{ ... });
after(^{ ... }); // Identical to afterEach(^{ ... });

These hooks are invoked before and after each example.

Before hooks are executed in the order of outermost to innermost, and after hooks are executed in the opposite direction.