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slic/tests/test_utils_pv.py
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Update tests/test_utils_pv.py
2025-08-11 01:09:59 +02:00

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Python

import patch_put
import pytest
import time
import threading
import builtins
from io import StringIO
import colorama
from contextlib import contextmanager
from slic.utils.pv import PV
from morbidissimo import MorIOC
'''
# === IOC simulé avec MorIOC ===
@pytest.fixture(scope="module", autouse=True)
def morioc_server():
stop = threading.Event()
def run_ioc():
with MorIOC("TEST") as mor:
# Explicit initialization to 0.0
current_val = 0.0
mor.host(VAL=float)
mor.serve(VAL=current_val)
# Serve loop until 'stop' is triggered
while not stop.is_set():
# Check for new value
input_val = mor.get("VAL")
if input_val is not None:
current_val = input_val
# Serve the current value
mor.serve(VAL=current_val)
time.sleep(0.05) # Small delay to avoid busy loop
# Start IOC in a normal thread (not daemon so we can join later)
t = threading.Thread(target=run_ioc)
t.start()
time.sleep(0.8) # Give Channel Access time to announce PVs
yield # <<< tests in this module run here >>>
# --- Teardown: stop IOC and free ports ---
stop.set()
t.join(timeout=2.0)
time.sleep(0.2) # Small delay to let OS release sockets
'''
# === Utils ===
@pytest.fixture
def capture_stdout(monkeypatch):
buf = StringIO()
monkeypatch.setattr("sys.stdout", buf)
return buf
@contextmanager
def use_callback(pv, callback):
cbid = pv.add_callback(callback)
try:
yield
finally:
pv.remove_callback(cbid)
import re
def strip_ansi(text):
ansi_escape = re.compile(r'\x1b\[[0-9;]*m')
return ansi_escape.sub('', text)
# === Tests ===
@pytest.mark.parametrize("value_new, value_before, show_bar, expected_color", [
(25, 0, True, colorama.Fore.GREEN),
(50, 25, True, colorama.Fore.GREEN),
(75, 50, False, colorama.Fore.GREEN),
(100, 75, True, colorama.Fore.GREEN),
(150, 100, False, colorama.Fore.GREEN),
(-50, 150, True, colorama.Fore.GREEN)
])
def test_put_with_progress_and_repr(value_new, value_before, show_bar, expected_color):
pv = PV("TEST:VAL")
pv.put(value_before)
assert pv.get() == value_before
# Capture tous les prints dans une liste
printed_lines = []
def fake_print(*args, **kwargs):
line = " ".join(str(a) for a in args)
printed_lines.append(line)
# Monkeypatch print uniquement dans ce contexte
original_print = builtins.print
builtins.print = fake_print
try:
pv.put(value_new, show_progress=show_bar)
finally:
builtins.print = original_print
printed_lines = [line for line in printed_lines if line.strip()]
cleaned_lines = [strip_ansi(line) for line in printed_lines]
# Initialisation bar
if show_bar==True:
matches = [line for line in cleaned_lines if f"| |" in line]
assert matches, f"Expected bar not found in:\n" + "\n".join(printed_lines)
# Vérifie que la bonne barre a été affichée au moins une fois
matches = [line for line in cleaned_lines if f"|██████████████████████████████|" in line]
assert matches, f"Expected bar not found in:\n" + "\n".join(printed_lines)
# Vérifie que la couleur est bien utilisée (au moins une fois dans les lignes printées)
color_matches = [line for line in printed_lines if expected_color in line]
assert color_matches, "Expected color code not found"
assert all(f"{value_new}" in line for line in printed_lines), "new value not in all lines"
assert all(f"{value_before}" in line for line in printed_lines), "old value not in all lines"
else :
assert len(printed_lines) == 0
# Vérifie que la valeur finale est correcte
assert pv.get() == value_new
def test_use_callback_context_manager():
pv = PV("TEST:VAL")
pv.put(0.0)
seen_values = []
def callback(value=None, **kwargs):
seen_values.append(value)
with pv.use_callback(callback):
pv.put(42.0)
# Vérifie que le callback a bien été appelé
assert 42.0 in seen_values
with pv.use_callback(callback):
pv.put(24.0)
assert 24.0 in seen_values
with pv.use_callback(callback):
pv.put(75.0)
assert 75.0 in seen_values
def test_orig_repr_is_not_custom_repr():
pv = PV("TEST:VAL", connection_timeout=2.0)
custom = repr(pv)
original = pv.orig_repr()
# Check that the custom repr is not the same as the original
assert custom != original
# Check that the original repr looks like a real epics PV
assert original.startswith("<PV ")
assert "TEST:VAL" in original
assert f'PV "TEST:VAL" at' in custom