Function test_should_print_false_no_output

tests/test_ProgressPrinter.py:107–128

Tests that disabling printing works.

(ok_small, caplog)

def test_should_print_false_no_output(ok_small, caplog):
    """
    Tests that disabling printing works.
    """
    sol = Solution(ok_small, [[1, 2, 3, 4]])
    cost_eval = CostEvaluator([20], 6, 6)

    stats = Statistics()
    stats.collect(sol, sol, sol, cost_eval)

    # Set up the progress printer, call all its methods, and then check that
    # the output captured on stdout is empty.
    printer = ProgressPrinter(should_print=False, display_interval=0.0)
    printer.start(ok_small)
    printer.iteration(stats=stats)
    printer.restart()

    rng = RandomNumberGenerator(42)
    sol = Solution.make_random(ok_small, rng)
    printer.end(result=Result(sol, stats, 25, 0.05))

    assert_equal(caplog.text, "")