<gh_stars>1-10
#
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import pytest
import serial

from pymeasure.adapters import SerialAdapter

def make_adapter(**kwargs):
    return SerialAdapter(serial.serial_for_url("loop://", **kwargs))


@pytest.mark.parametrize("msg", ["OUTP\n", "POWER 22 dBm\n"])
def test_adapter_write(msg):
    adapter = make_adapter(timeout=0.2)
    adapter.write(msg)
    assert(adapter.read() == msg)

@pytest.mark.parametrize("test_input,expected", [([1,2,3], b'OUTP#13\x01\x02\x03'),
                                                 (range(100), b'OUTP#3100'+bytes(range(100)))])
def test_adapter_write_binary_values(test_input, expected):
    adapter = make_adapter(timeout=0.2)
    adapter.write_binary_values("OUTP", test_input, datatype='B')
    # Add 10 bytes more, just to check that no extra bytes are present
    assert(adapter.connection.read(len(expected)+10) == expected)

