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import pytest
import os
import tempfile
from time import sleep
from importlib.machinery import SourceFileLoader

from pymeasure.experiment.workers import Worker
from pymeasure.experiment.results import Results

# Load the procedure, without it being in a module
data_path = os.path.join(os.path.dirname(__file__), 'data/procedure_for_testing.py')
RandomProcedure = SourceFileLoader('procedure', data_path).load_module().RandomProcedure
#from data.procedure_for_testing import RandomProcedure


def test_procedure():
    """ Ensure that the loaded test procedure is properly functioning
    """
    procedure = RandomProcedure()
    assert procedure.iterations == 100
    assert procedure.delay == 0.001
    assert hasattr(procedure, 'execute')

def test_worker_stop():
    procedure = RandomProcedure()
    file = tempfile.mktemp()
    results = Results(procedure, file)
    worker = Worker(results)
    worker.start()
    worker.stop()
    assert worker.should_stop()
    worker.join()

def test_worker_finish():
    procedure = RandomProcedure()
    procedure.iterations = 100
    procedure.delay = 0.001
    file = tempfile.mktemp()
    results = Results(procedure, file)
    worker = Worker(results)
    worker.start()
    worker.join(timeout=5)

    assert not worker.is_alive()

    new_results = Results.load(file, procedure_class=RandomProcedure)
    assert new_results.data.shape == (100, 2)

def test_worker_closes_file_after_finishing():
    procedure = RandomProcedure()
    procedure.iterations = 100
    procedure.delay = 0.001
    file = tempfile.mktemp()
    results = Results(procedure, file)
    worker = Worker(results)
    worker.start()
    worker.join(timeout=5)

    # Test if the file has been properly closed by removing the file
    os.remove(file)