41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
 
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"""midi_witness.py (2026-10-26, NA): the key changes Studio B really receives, through real CoreMIDI."""
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import json
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import os
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import sys
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import tempfile
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import time
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import unittest
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sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
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import coremidi # noqa: E402
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import midi_witness as mw # noqa: E402
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class TestWitness(unittest.TestCase):
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def test_parses_a_packet(self):
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self.assertEqual(mw.messages(bytes([0xC0, 7, 0xF8, 0x90, 60, 100, 0xF0, 1, 2, 0xF7, 0xC1, 4])),
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[(0xC0, b"\x07"), (0x90, b"<d"), (0xC1, b"\x04")])
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def test_writes_down_program_changes_it_really_receives(self):
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src = coremidi.VirtualSource("witness-test")
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out = os.path.join(tempfile.mkdtemp(), "w.json")
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try:
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w = mw.Witness(["witness-test"], out=out)
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w.poll()
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time.sleep(0.3)
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src.send(bytes([0xC0, 7])) # Ebmaj
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src.send(bytes([0x90, 60, 100]))
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src.send(bytes([0xC2, 11]))
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time.sleep(0.5)
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w.save()
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d = json.load(open(out))
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self.assertTrue(d["sources"]["witness-test"]["connected"])
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self.assertEqual([p[2:] for p in d["pcs"]], [[1, 7], [3, 11]])
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self.assertEqual(d["sources"]["witness-test"]["count"], 3)
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finally:
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src.close()
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if __name__ == "__main__":
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unittest.main()
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