Defining tests

To execute a test, you will need:

A “test plan”, defined via one or more *.yaml files. Here's an example:
```
.. literalinclude:: language.test.yaml
   :start-after: The most typical use pattern is the following
   :end-before: Above is the typical usage
   :caption:
```
See the :ref:`defining-tests/testplan-reference` page for information on the yaml directives available in the testplan, and how to use them directly via embedded Python code.
A “manifest”, defined via one or more *.manifest.yaml files. Here's an example:
```
.. literalinclude:: language.manifest.yaml
   :start-after: Example manifest file
   :caption:
```
See the :ref:`defining-tests/manifest-reference` page for an explanation of the manifest.

.. toctree::
   :maxdepth: 2
   :caption: References:

   testplan-reference
   manifest-reference