We may only look at some of the methods available from TestCase [ci skip]
Better explain how test() methods get defined and kill this run-on sentence.

[ci skip]
Removed run-on sentence and replace with sectional comments [ci skip]
Fix NOTE for method naming in Ruby and add intro sentence to next section.

[ci skip]
Remove duplicate description of the previous line [ci skip]
Better explain number of assertions per test [ci skip]