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"""Tests for PPMCK and Pyxel parsers (AST output)."""
from mml_composemusic_mcp.ast_nodes import NoteStmt, Program, Track
from mml_composemusic_mcp.lexer import tokenize
from mml_composemusic_mcp.parser_ppmck import parse_ppmck
from mml_composemusic_mcp.parser_pyxel import parse_pyxel
PPMCK_EXAMPLE = """#TITLE "Test"
A t150 l8 o4 v15 q2
c d e f
B o3
c e g
"""
PYXEL_EXAMPLE = """0: T150 L8 O4 V100 @1
C D E F
1: O3
C E G
"""
def test_ppmck_parse():
tokens = tokenize(PPMCK_EXAMPLE, "ppmck")
program, errors = parse_ppmck(PPMCK_EXAMPLE, tokens)
assert isinstance(program, Program)
assert not any(e.severity == "error" for e in errors)
assert len(program.tracks) == 2
assert program.tracks[0].channel == "Pulse1"
assert program.tracks[1].channel == "Pulse2"
notes = [
s for s in program.tracks[0].statements if isinstance(s, NoteStmt)
]
assert notes[0].note_name == "c"
def test_pyxel_parse():
tokens = tokenize(PYXEL_EXAMPLE, "pyxel")
program, errors = parse_pyxel(PYXEL_EXAMPLE, tokens)
assert isinstance(program, Program)
assert not any(e.severity == "error" for e in errors)
assert len(program.tracks) == 2
assert program.tracks[0].channel == "Pulse1"
notes = [
s for s in program.tracks[0].statements if isinstance(s, NoteStmt)
]
assert notes[0].note_name == "c"
def test_pyxel_repeat_ast():
source = "0: T120 L4 O4\n[ C D ]2"
tokens = tokenize(source, "pyxel")
program, errors = parse_pyxel(source, tokens)
assert not any(e.severity == "error" for e in errors)
assert isinstance(program.tracks[0], Track)
def test_invalid_mode_error():
from mml_composemusic_mcp.server import _parse_mml
seq, errors = _parse_mml("A c", "unknown")
assert seq is None
assert any(e.severity == "error" for e in errors)
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