Run a single example group in RSpec

To only run a single describe/context block in a long spec, you can say

Copyspec spec/models/note_spec.rb:545

... where the describe block starts at line 545.

Note: This will only run examples that are direct children of this block, not descendants further down (when nesting describe/context blocks).

You may also pass the line of an it block to run this exact one.