mirror of
https://github.com/graphql-python/graphene.git
synced 2025-11-04 09:57:41 +03:00
48678afba4
* actually run the tests in python 3.12 and 3.13 * remove snapshottest from the example tests so that the tests pass in 3.12 and 3.13 again * remove the section about snapshot testing from the testing docs because the snapshottest package doesn't work on Python 3.12 and above * fix assertion for badly formed JSON input on Python 3.13 * fix deprecation warning about datetime.utcfromtimestamp()
72 lines
2.3 KiB
ReStructuredText
72 lines
2.3 KiB
ReStructuredText
===================
|
||
Testing in Graphene
|
||
===================
|
||
|
||
|
||
Automated testing is an extremely useful bug-killing tool for the modern developer. You can use a collection of tests – a test suite – to solve, or avoid, a number of problems:
|
||
|
||
- When you’re writing new code, you can use tests to validate your code works as expected.
|
||
- When you’re refactoring or modifying old code, you can use tests to ensure your changes haven’t affected your application’s behavior unexpectedly.
|
||
|
||
Testing a GraphQL application is a complex task, because a GraphQL application is made of several layers of logic – schema definition, schema validation, permissions and field resolution.
|
||
|
||
With Graphene test-execution framework and assorted utilities, you can simulate GraphQL requests, execute mutations, inspect your application’s output and generally verify your code is doing what it should be doing.
|
||
|
||
|
||
Testing tools
|
||
-------------
|
||
|
||
Graphene provides a small set of tools that come in handy when writing tests.
|
||
|
||
|
||
Test Client
|
||
~~~~~~~~~~~
|
||
|
||
The test client is a Python class that acts as a dummy GraphQL client, allowing you to test your views and interact with your Graphene-powered application programmatically.
|
||
|
||
Some of the things you can do with the test client are:
|
||
|
||
- Simulate Queries and Mutations and observe the response.
|
||
- Test that a given query request is rendered by a given Django template, with a template context that contains certain values.
|
||
|
||
|
||
Overview and a quick example
|
||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
||
To use the test client, instantiate ``graphene.test.Client`` and retrieve GraphQL responses:
|
||
|
||
|
||
.. code:: python
|
||
|
||
from graphene.test import Client
|
||
|
||
def test_hey():
|
||
client = Client(my_schema)
|
||
executed = client.execute('''{ hey }''')
|
||
assert executed == {
|
||
'data': {
|
||
'hey': 'hello!'
|
||
}
|
||
}
|
||
|
||
|
||
Execute parameters
|
||
~~~~~~~~~~~~~~~~~~
|
||
|
||
You can also add extra keyword arguments to the ``execute`` method, such as
|
||
``context``, ``root``, ``variables``, ...:
|
||
|
||
|
||
.. code:: python
|
||
|
||
from graphene.test import Client
|
||
|
||
def test_hey():
|
||
client = Client(my_schema)
|
||
executed = client.execute('''{ hey }''', context={'user': 'Peter'})
|
||
assert executed == {
|
||
'data': {
|
||
'hey': 'hello Peter!'
|
||
}
|
||
}
|