39 lines
1.2 KiB
Python
39 lines
1.2 KiB
Python
import logging
|
|
import time
|
|
|
|
from fastapi.testclient import TestClient
|
|
|
|
from labthings_fastapi.server import ThingServer
|
|
from labthings_fastapi.client import ThingClient
|
|
|
|
from openflexure_microscope_server.things.camera.picamera import StreamingPiCamera2
|
|
|
|
logging.basicConfig(level=logging.DEBUG)
|
|
|
|
|
|
def test_exposure_time_drift():
|
|
"""
|
|
Capture 10 full resolution images and check that the exposure time remains constant
|
|
|
|
This confirms that automatic exposure time adjustment is fully turned off
|
|
"""
|
|
cam = StreamingPiCamera2()
|
|
server = ThingServer()
|
|
server.add_thing(cam, "/camera/")
|
|
|
|
with TestClient(server.app) as test_client:
|
|
client = ThingClient.from_url("/camera/", client=test_client)
|
|
# 5444 is an exposure time supported by PiCamera2
|
|
client.exposure_time = 5444
|
|
time.sleep(0.5)
|
|
initial_et = client.exposure_time
|
|
print(f"Before capture, et is {client.exposure_time}")
|
|
for i in range(5):
|
|
client.capture_jpeg(resolution="full")
|
|
print(f"After capture, et is {client.exposure_time}")
|
|
final_et = client.exposure_time
|
|
assert initial_et == final_et
|
|
|
|
|
|
if __name__ == "__main__":
|
|
test_exposure_time_drift()
|