External observers don’t need to be aware of the fact we need to
sanitize leading document separators in YAML files. This should be
hidden inside our public function - `ApplyFixToContent()`.
Signed-off-by: Vlad Klokun <vklokun@protonmail.ch>
This change:
- Changes test data naming convention to be lexicographically sortable
and have input and expected data side-by-side.
- Executes each test case in a separate run.