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70 lines
2.2 KiB
ReStructuredText
70 lines
2.2 KiB
ReStructuredText
Testing API Responses
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=====================
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Tornado OpenAPI 3 includes a base test class to help you validate each of your
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application's responses while you test its behavior.
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Making your tests aware of your API specification
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-------------------------------------------------
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By extending :class:`~tornado_openapi3.testing.AsyncOpenAPITestCase`, you can
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define your test cases with your specification attached. Every response returned
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by :meth:`~tornado_openapi3.testing.AsyncOpenAPITestCase.fetch` will be
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automatically checked against your specification to ensure they match the
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formats documented, and exceptions will be raised when they do not.
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Because it extends :class:`tornado.testing.AsyncHTTPTestCase`, you can write
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your application tests as you normally would with added confidence that your API
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is behaving exactly as you expect it to.
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.. literalinclude:: examples/test.py
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Adding custom deserializers
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---------------------------
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If your endpoints make use of content types beyond ``application/json``, you
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must add them to this dictionary with a deserializing method that converts the
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raw body (as :class:`bytes` or :class:`str`) to Python objects.
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.. code-block:: python
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import json
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from tornado_openapi3.testing import AsyncOpenAPITestCase
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class TestCase(AsyncOpenAPITestCase):
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custom_media_type_deserializers = {
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"application/vnd.example.resource+json": json.loads,
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}
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...
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Adding custom formatters
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------------------------
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If your schemas make use of format modifiers, you may specify them in this
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dictionary paired with a :class:`~tornado_openapi3.types.Formatter` object that
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provides methods to validate values and unmarshal them into Python objects.
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.. code-block:: python
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import datetime
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from tornado_openapi3.testing import AsyncOpenAPITestCase
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class USDateFormatter:
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def validate(self, value: str) -> bool:
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return bool(re.match(r"^\d{1,2}/\d{1,2}/\d{4}$", value))
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def unmarshal(self, value: str) -> datetime.date:
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return datetime.datetime.strptime(value, "%m/%d/%Y").date()
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class TestCase(AsyncOpenAPITestCase):
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custom_formatters = {
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"usdate": USDateFormatter(),
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}
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...
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