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#
# This file is part of the PyMeasure package.
#
# Copyright (c) 2013-2024 PyMeasure Developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
import pytest
import serial
from pymeasure.adapters import SerialAdapter
@pytest.fixture
def adapter():
return SerialAdapter(serial.serial_for_url("loop://", timeout=0.2))
@pytest.mark.parametrize("term", (("", "\n", "123\r")))
def test_write_termination(adapter, term):
adapter.write_termination = term
adapter.write("abc")
assert adapter.read() == "abc" + term
@pytest.mark.parametrize("term", (("", "\n", "\r\n", "4.1123")))
def test_read_termination(adapter, term):
adapter.read_termination = term
adapter.write("abc" + term)
assert adapter.read() == "abc"
@pytest.mark.parametrize("msg", ["OUTP\n", "POWER 22 dBm\n"])
def test_adapter_write_read(adapter, msg):
adapter.write(msg)
assert adapter.read() == msg
@pytest.mark.parametrize("msg", [b"OUTP\n", b"POWER 22 dBm\n"])
def test_write_bytes(adapter, msg):
adapter.write_bytes(msg)
assert adapter.read() == msg.decode()
def test_read_bytes(adapter):
"""Test whether `count` bytes are returned, even though a term char is defined."""
adapter.read_termination = "\n"
adapter.write_bytes(b"basd\x02\nfasdf\n")
assert adapter.read_bytes(9) == b"basd\x02\nfas"
def test_read_bytes_unlimited(adapter):
"""Test whether all bytes are returned, even though a term char is defined."""
adapter.read_termination = "\n"
adapter.write_bytes(b"basd\x02\nfasdf\n")
assert adapter.read_bytes(-1) == b"basd\x02\nfasdf\n"
def test_read_bytes_unlimited_long(adapter):
"""Test whether all bytes are returned when a lot of data is sent."""
adapter.write_bytes(b"abcde" * 50)
assert adapter.read_bytes(-1) == b"abcde" * 50
@pytest.mark.parametrize("count", (-1, 8))
def test_read_bytes_break_on_termchar(adapter, count):
adapter.read_termination = "\n"
adapter.write_bytes(b"basd\x02\nfasdf\n")
assert adapter.read_bytes(count, break_on_termchar=True) == b"basd\x02\n"
@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(adapter, test_input, expected):
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
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