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from time import perf_counter_ns

from pymeasure.test import expected_protocol
from pymeasure.instruments.temptronic.temptronic_base import ATSBase


def test_check_query_delay():
    with expected_protocol(ATSBase, [("TTIM?", "7")]) as inst:
        start = perf_counter_ns()
        assert inst.maximum_test_time == 7
        delay = perf_counter_ns() - start
        # HACK acceptable factor is needed, as in CI under windows (Py38, Py39) the `sleep` interval
        # is slightly shorter than the given argument.
        acceptable_factor = 0.95
        assert delay > 0.05 * 1e9 * acceptable_factor
