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#!/usr/bin/env python
"""Unit tests for the rtmidi module."""
import time
import unittest
import pytest
import rtmidi
class BaseTests:
NOTE_ON = [0x90, 48, 100]
NOTE_OFF = [0x80, 48, 16]
SYSEX_IDENTITY_REQUEST = [0xF0, 0x7E, 0x7F, 6, 1, 0xF7]
IN_CLIENT_NAME = "RtMidiTestCase In"
OUT_CLIENT_NAME = "RtMidiTestCase Out"
IN_PORT_NAME = 'testin'
OUT_PORT_NAME = 'testout'
DELAY = 0.1
API = rtmidi.API_UNSPECIFIED
def setUp(self):
self.midi_in = rtmidi.MidiIn(rtapi=self.API, name=self.IN_CLIENT_NAME)
self.midi_out = rtmidi.MidiOut(rtapi=self.API, name=self.OUT_CLIENT_NAME)
def tearDown(self):
self.midi_in.close_port()
del self.midi_in
self.midi_out.close_port()
del self.midi_out
def test_is_port_open(self):
assert not self.midi_in.is_port_open()
self.midi_in.open_port(0)
assert self.midi_in.is_port_open()
self.midi_in.close_port()
assert not self.midi_in.is_port_open()
assert not self.midi_out.is_port_open()
self.midi_out.open_port(0)
assert self.midi_out.is_port_open()
self.midi_out.close_port()
assert not self.midi_out.is_port_open()
def test_get_current_api(self):
assert self.midi_in.get_current_api() == self.API
assert self.midi_out.get_current_api() == self.API
class VirtualPortsSupportedTests:
def test_is_port_open_virtual(self):
# virtual ports can't be closed
assert not self.midi_in.is_port_open()
self.midi_in.open_virtual_port()
assert self.midi_in.is_port_open()
self.midi_in.close_port()
assert self.midi_in.is_port_open()
assert not self.midi_out.is_port_open()
self.midi_out.open_virtual_port()
assert self.midi_out.is_port_open()
self.midi_out.close_port()
assert self.midi_out.is_port_open()
def test_send_and_get_message(self):
self.set_up_loopback()
self.midi_out.send_message(self.NOTE_ON)
self.midi_out.send_message(self.NOTE_OFF)
time.sleep(self.DELAY)
event_1 = self.midi_in.get_message()
event_2 = self.midi_in.get_message()
self.assertTrue(isinstance(event_1, tuple))
self.assertTrue(isinstance(event_2, tuple))
self.assertEqual(event_1[0], self.NOTE_ON)
self.assertEqual(event_2[0], self.NOTE_OFF)
def test_send_supports_iterator(self):
self.set_up_loopback()
self.midi_out.send_message(iter(self.NOTE_ON))
time.sleep(self.DELAY)
event = self.midi_in.get_message()
self.assertTrue(isinstance(event, tuple))
self.assertEqual(event[0], self.NOTE_ON)
def test_send_raises_if_message_too_long(self):
self.assertRaises(ValueError, self.midi_out.send_message, [1, 2, 3, 4])
def test_send_raises_if_message_empty(self):
self.assertRaises(ValueError, self.midi_out.send_message, [])
self.assertRaises(ValueError, self.midi_out.send_message, iter([]))
def test_send_accepts_sysex(self):
self.set_up_loopback()
self.midi_in.ignore_types(sysex=False)
self.midi_out.send_message(self.SYSEX_IDENTITY_REQUEST)
time.sleep(self.DELAY)
event = self.midi_in.get_message()
self.assertTrue(isinstance(event, tuple))
self.assertEqual(event[0], self.SYSEX_IDENTITY_REQUEST)
def test_callback(self):
messages = []
def callback(event, data):
messages.append((event[0], data))
self.set_up_loopback()
self.midi_in.set_callback(callback, data=42)
self.midi_out.send_message(self.NOTE_ON)
self.midi_out.send_message(self.NOTE_OFF)
time.sleep(self.DELAY)
self.assertEqual(messages[0], (self.NOTE_ON, 42))
self.assertEqual(messages[1], (self.NOTE_OFF, 42))
self.midi_in.cancel_callback()
messages = []
self.midi_out.send_message(self.NOTE_ON)
self.midi_out.send_message(self.NOTE_OFF)
time.sleep(self.DELAY)
self.assertEqual(messages, [])
def set_up_loopback(self):
# TODO: find better solution than this hack-ish strategy to find out
# the port number of the virtual output port, which we have to use,
# because for ALSA virtual ports, their name includes the client id.
# See: https://github.com/thestk/rtmidi/issues/88
ports_before = self.midi_in.get_ports()
self.midi_out.open_virtual_port(name=self.OUT_PORT_NAME)
ports_after = self.midi_in.get_ports()
self.midi_out_port_name = list(set(ports_after).difference(ports_before))[0]
for portnum, port in enumerate(ports_after):
if port == self.midi_out_port_name:
self.midi_in.open_port(portnum)
break
else:
raise IOError("Could not find MIDI output port.")
class VirtualPortsUnsupportedTests:
def test_is_port_open_virtual(self):
# virtual ports can't be closed
assert not self.midi_in.is_port_open()
self.assertRaises(NotImplementedError, self.midi_in.open_virtual_port)
class SetPortNameSupportedTests:
def test_set_port_name_supported(self):
self.midi_out.open_virtual_port(name=self.OUT_PORT_NAME)
found = False
for port in self.midi_in.get_ports():
client, port = port.split(':', 1)
if client.startswith(self.OUT_CLIENT_NAME) and port.startswith(self.OUT_PORT_NAME):
found = True
break
assert found
self.midi_out.set_port_name("new_port")
found = False
for port in self.midi_in.get_ports():
client, port = port.split(':', 1)
if client.startswith(self.OUT_CLIENT_NAME) and port.startswith("new_port"):
found = True
break
assert found
class SetPortNameUnsupportedTests:
def test_set_port_name_unsupported(self):
self.assertRaises(NotImplementedError, self.midi_out.set_port_name, "new_port")
class SetClientNameSupportedTests:
def test_set_client_name_supported(self):
self.midi_out.open_virtual_port(name=self.OUT_PORT_NAME)
found = False
for port in self.midi_in.get_ports():
client, port = port.split(':', 1)
if client.startswith(self.OUT_CLIENT_NAME) and port.startswith(self.OUT_PORT_NAME):
found = True
break
assert found
self.midi_out.set_client_name("new_client")
found = False
for port in self.midi_in.get_ports():
client, port = port.split(':', 1)
if client.startswith("new_client") and port.startswith(self.OUT_PORT_NAME):
found = True
break
assert found
class SetClientNameUnsupportedTests:
def test_set_client_name_unsupported(self):
self.assertRaises(NotImplementedError, self.midi_out.set_client_name, "new_client")
if rtmidi.API_LINUX_ALSA in rtmidi.get_compiled_api():
class ALSATestCase(BaseTests, SetPortNameSupportedTests, SetClientNameSupportedTests,
VirtualPortsSupportedTests, unittest.TestCase):
API = rtmidi.API_LINUX_ALSA
if rtmidi.API_UNIX_JACK in rtmidi.get_compiled_api():
@pytest.mark.jack
class JACKTestCase(BaseTests, SetPortNameSupportedTests, SetClientNameUnsupportedTests,
VirtualPortsSupportedTests, unittest.TestCase):
API = rtmidi.API_UNIX_JACK
if rtmidi.API_MACOSX_CORE in rtmidi.get_compiled_api():
class CoreMIDITestCase(BaseTests, SetPortNameUnsupportedTests, SetClientNameUnsupportedTests,
VirtualPortsSupportedTests, unittest.TestCase):
API = rtmidi.API_MACOSX_CORE
if rtmidi.API_WINDOWS_MM in rtmidi.get_compiled_api():
class WindowsMMTestCase(BaseTests, SetPortNameUnsupportedTests, SetClientNameUnsupportedTests,
VirtualPortsUnsupportedTests, unittest.TestCase):
API = rtmidi.API_WINDOWS_MM
if __name__ == '__main__':
unittest.main()
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