75 lines
2.3 KiB
Python
75 lines
2.3 KiB
Python
"""Test data collection from the Raspberry Picamera."""
|
|
|
|
import tempfile
|
|
|
|
from fastapi.testclient import TestClient
|
|
from PIL import Image
|
|
import numpy as np
|
|
from pytest import fixture
|
|
|
|
import labthings_fastapi as lt
|
|
|
|
from openflexure_microscope_server.things.camera.picamera import StreamingPiCamera2
|
|
|
|
|
|
@fixture()
|
|
def picamera_thing() -> StreamingPiCamera2:
|
|
"""Return a StreamingPiCamera2 Thing.
|
|
|
|
This is the Thing that the fixture client uses. It can be used to probe the
|
|
Thing directly to check actions had the expected response.
|
|
"""
|
|
return StreamingPiCamera2()
|
|
|
|
|
|
@fixture()
|
|
def client(picamera_thing) -> lt.ThingClient:
|
|
"""Initialise a test client for the StreamingPiCamera2 Thing.
|
|
|
|
This fixture:
|
|
|
|
* Sets up a ThingServer,
|
|
* Registers a StreamingPiCamera2 instance at the "/camera/" endpoint
|
|
* Provides a ThingClient for interacting with it during tests.
|
|
"""
|
|
temp_folder = tempfile.TemporaryDirectory()
|
|
server = lt.ThingServer(settings_folder=temp_folder.name)
|
|
server.add_thing(picamera_thing, "/camera/")
|
|
with TestClient(server.app) as test_client:
|
|
client = lt.ThingClient.from_url("/camera/", client=test_client)
|
|
yield client
|
|
|
|
|
|
def test_calibration(picamera_thing, client):
|
|
"""Check that full auto calibrate completes without an exception."""
|
|
tuning = picamera_thing.tuning
|
|
default_tuning = picamera_thing.default_tuning
|
|
# Tuning should start the same as the server is loading with no settings.
|
|
assert default_tuning == tuning
|
|
# After calibration they should be different
|
|
client.full_auto_calibrate()
|
|
assert default_tuning != tuning
|
|
|
|
|
|
def test_jpeg_and_array(client):
|
|
"""Check that a jpeg grabbed from the stream is the same size as other captures.
|
|
|
|
Compare it to an array capture and a jpeg capture.
|
|
"""
|
|
# Grab a jpeg from the stream
|
|
blob = client.grab_jpeg()
|
|
mjpeg_frame = Image.open(blob.open())
|
|
assert mjpeg_frame
|
|
|
|
# Capture a jpeg
|
|
blob = client.capture_jpeg(resolution="main")
|
|
jpeg_capture = Image.open(blob.open())
|
|
assert jpeg_capture
|
|
|
|
# Capture an array
|
|
arrlist = client.capture_array(stream_name="main")
|
|
array_main = np.array(arrlist)
|
|
|
|
# Verify image sizes are the same
|
|
assert mjpeg_frame.size == jpeg_capture.size
|
|
assert array_main.shape[1::-1] == jpeg_capture.size
|