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# SPDX-FileCopyrightText: 2017 Ole Martin Bjorndalen <ombdalen@gmail.com>
#
# SPDX-License-Identifier: MIT
import pytest
from mido.midifiles.meta import (
KeySignatureError,
MetaMessage,
MetaSpec_key_signature,
UnknownMetaMessage,
)
def test_copy_invalid_argument():
with pytest.raises(ValueError):
MetaMessage('track_name').copy(a=1)
def test_copy_cant_override_type():
with pytest.raises(ValueError):
MetaMessage('track_name').copy(type='end_of_track')
class TestKeySignature:
@pytest.mark.parametrize('bad_key_sig', [[8, 0], [8, 1], [0, 2],
[9, 1], [255 - 7, 0]])
def test_bad_key_sig_throws_key_signature_error(self, bad_key_sig):
with pytest.raises(KeySignatureError):
MetaSpec_key_signature().decode(MetaMessage('key_signature'),
bad_key_sig)
@pytest.mark.parametrize('input_bytes,expect_sig', [([0, 0], 'C'),
([0, 1], 'Am'),
([255 - 6, 0], 'Cb'),
([255 - 6, 1], 'Abm'),
([7, 1], 'A#m')
])
def test_key_signature(self, input_bytes, expect_sig):
msg = MetaMessage('key_signature')
MetaSpec_key_signature().decode(msg, input_bytes)
assert msg.key == expect_sig
def test_meta_message_repr():
msg = MetaMessage('end_of_track', time=10)
msg_eval = eval(repr(msg)) # noqa: S307
assert msg == msg_eval
def test_unknown_meta_message_repr():
msg = UnknownMetaMessage(type_byte=99, data=[1, 2], time=10)
msg_eval = eval(repr(msg)) # noqa: S307
assert msg == msg_eval
def test_meta_from_bytes_invalid():
test_bytes = [
0xC0, # Not a meta event (Program Change channel 1)
0x05 # Program #5
]
with pytest.raises(ValueError):
MetaMessage.from_bytes(test_bytes)
def test_meta_from_bytes_data_too_short():
test_bytes = [
0xFF, # Meta event
0x01, # Event Type: Text
0x04, # Length
ord('T'), ord('E'), ord('S'), # Text: TES
]
with pytest.raises(ValueError):
MetaMessage.from_bytes(test_bytes)
def test_meta_from_bytes_data_too_long():
test_bytes = [
0xFF, # Meta event
0x01, # Event Type: Text
0x04, # Length
ord('T'), ord('E'), ord('S'), ord('T'), ord('S') # Text: TESTS
]
with pytest.raises(ValueError):
MetaMessage.from_bytes(test_bytes)
def test_meta_from_bytes_text():
test_bytes = [
0xFF, # Meta event
0x01, # Event Type: Text
0x04, # Length
ord('T'), ord('E'), ord('S'), ord('T') # Text: TEST
]
msg = MetaMessage.from_bytes(test_bytes)
assert msg.type == 'text'
assert msg.text == 'TEST'
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