test_invalid_writes.py 文件源码

def test_insufficient_numpy_write_data(self, x_series_device, seed):
        # Reset the pseudorandom number generator with seed.
        random.seed(seed)

        # Randomly select physical channels to test.
        number_of_channels = random.randint(
            2, len(x_series_device.ao_physical_chans))
        channels_to_test = random.sample(
            x_series_device.ao_physical_chans, number_of_channels)

        with nidaqmx.Task() as task:
            task.ao_channels.add_ao_voltage_chan(
                flatten_channel_string([c.name for c in channels_to_test]),
                max_val=10, min_val=-10)

            number_of_samples = random.randint(1, number_of_channels - 1)
            values_to_test = numpy.float64([
                random.uniform(-10, 10) for _ in range(number_of_samples)])

            with pytest.raises(DaqError) as e:
                task.write(values_to_test, auto_start=True)
            assert e.value.error_code == -200524