While you could run tests by right-clicking on run.py and then writing "yes" in the Terminal, there's a drawback to this - you'll need to reload the whole Datastore emulator every time you need to restart tests.
There's a better approach, though: running the datastore emulator in a separate terminal tab using this command:
gcloud beta emulators datastore start --consistency=1 --no-store-on-disk --project test --host-port "localhost:8002"
and then you can run tests in a separate Terminal tab:
# mac & linux:
export TESTING=yes && pytest -p no:warnings
# windows
set TESTING=yes && pytest -p no:warnings
Examine how existing tests are done.
Every test Python file (and test function) starts with test_. This is a mandatory prefix!
The other two mandatory things are two functions that need to exist in every test file:
client()cleanup()
The best approach is to copy them from one of the existing files. Just make sure to think before if you need to add
creating a user in the client() function, or not. And if you'll create a user there, does it need to be admin, or not?
A simple GET request test looks something like this:
def test_hello(client):
response = client.get('/')
assert b'Hello' in response.data
assert 200 == response.status_codeFor a POST request do something like this:
def test_contact(client):
data = {"sender_name": "Testman", "sender_email": "[email protected]", "sender_message": "Hello everyone!"}
response = client.post('/contact', data=data, follow_redirects=True)
assert b'Thank you for contacting us!' in response.data