refactor: migrate from FL Studio to REAPER with rpp library
Replace FL Studio binary .flp output with REAPER text-based .rpp output using the rpp Python library (Perlence/rpp). - Add core/schema.py: DAW-agnostic data types (SongDefinition, TrackDef, ClipDef, MidiNote, PluginDef) - Add reaper_builder/: RPP file generation via rpp.Element + headless render via reaper.exe CLI - Add composer/converters.py: bridge rhythm.py/melodic.py note dicts to core.schema MidiNote objects - Rewrite scripts/compose.py: real generator pipeline with --render flag - Delete src/flp_builder/, src/scanner/, mcp/, flstudio-mcp/, old scripts - Add 40 passing tests (schema, builder, converters, compose, render)
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renato97
170
tests/test_compose_integration.py
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170
tests/test_compose_integration.py
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"""Integration tests for scripts/compose.py — end-to-end compose workflow."""
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import sys
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from pathlib import Path
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from unittest.mock import patch, MagicMock
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sys.path.insert(0, str(Path(__file__).parents[1]))
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import pytest
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from src.core.schema import SongDefinition, SongMeta, TrackDef, ClipDef, MidiNote
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from src.reaper_builder import RPPBuilder
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# ---------------------------------------------------------------------------
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# Helpers
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# ---------------------------------------------------------------------------
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def compose_via_builder(
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genre: str = "reggaeton",
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bpm: float = 95.0,
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key: str = "Am",
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output_path: str = "output/track.rpp",
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) -> SongDefinition:
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"""Build a SongDefinition the same way scripts/compose.py does, return it.
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This lets us test the compose logic without hitting the filesystem for samples.
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"""
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from src.composer.rhythm import get_notes
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from src.composer.melodic import bass_tresillo, lead_hook, chords_block, pad_sustain
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from src.composer.converters import rhythm_to_midi, melodic_to_midi
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genre_bar_map = {"reggaeton": 64, "trap": 32, "house": 64, "drill": 32}
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bar_count = genre_bar_map.get(genre.lower(), 48)
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# Drum tracks
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drum_tracks = []
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for role, generator_name in [
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("kick", "kick_main_notes"),
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("snare", "snare_verse_notes"),
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("hihat", "hihat_16th_notes"),
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("perc", "perc_combo_notes"),
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]:
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note_dict = get_notes(generator_name, bar_count)
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midi_notes = rhythm_to_midi(note_dict)
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clip = ClipDef(
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position=0.0,
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length=bar_count * 4.0,
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name=f"{role.capitalize()} Pattern",
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midi_notes=midi_notes,
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)
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drum_tracks.append(TrackDef(name=role.capitalize(), clips=[clip]))
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# Melodic tracks (no selector — audio_path stays None)
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for role, generator_fn in [
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("bass", bass_tresillo),
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("lead", lead_hook),
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("chords", chords_block),
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("pad", pad_sustain),
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]:
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note_list = generator_fn(key=key, bars=bar_count)
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midi_notes = melodic_to_midi(note_list)
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clip = ClipDef(
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position=0.0,
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length=bar_count * 4.0,
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name=f"{role.capitalize()} MIDI",
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midi_notes=midi_notes,
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)
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drum_tracks.append(TrackDef(name=role.capitalize(), clips=[clip]))
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meta = SongMeta(bpm=bpm, key=key, title=f"{genre.capitalize()} Track")
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return SongDefinition(meta=meta, tracks=drum_tracks)
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# ---------------------------------------------------------------------------
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# Tests
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# ---------------------------------------------------------------------------
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class TestComposeRppOutput:
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"""Tests for compose workflow producing valid .rpp output."""
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def test_compose_produces_rpp_file(self, tmp_path):
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"""main() with valid args produces a .rpp file at the output path."""
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output = tmp_path / "track.rpp"
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# Mock SampleSelector.select_one so we don't need actual sample files
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with patch("scripts.compose.SampleSelector") as mock_selector_cls:
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mock_selector = MagicMock()
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mock_selector.select_one.return_value = None # audio_path stays None
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mock_selector_cls.return_value = mock_selector
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from scripts.compose import main
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import sys
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original_argv = sys.argv
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try:
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sys.argv = [
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"compose",
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"--genre", "reggaeton",
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"--bpm", "95",
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"--key", "Am",
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"--output", str(output),
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]
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main()
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finally:
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sys.argv = original_argv
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assert output.exists(), f"Expected {output} to exist"
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def test_compose_rpp_has_min_4_tracks(self, tmp_path):
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"""The .rpp output contains at least 4 <TRACK blocks."""
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output = tmp_path / "track.rpp"
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with patch("scripts.compose.SampleSelector") as mock_selector_cls:
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mock_selector = MagicMock()
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mock_selector.select_one.return_value = None
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mock_selector_cls.return_value = mock_selector
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from scripts.compose import main
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import sys
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original_argv = sys.argv
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try:
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sys.argv = [
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"compose",
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"--genre", "reggaeton",
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"--bpm", "95",
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"--key", "Am",
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"--output", str(output),
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]
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main()
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finally:
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sys.argv = original_argv
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content = output.read_text(encoding="utf-8")
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track_count = content.count("<TRACK")
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assert track_count >= 4, f"Expected >= 4 tracks, got {track_count}"
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def test_compose_invalid_bpm_raises(self):
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"""main() with bpm=0 raises ValueError."""
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from scripts.compose import main
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import sys
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original_argv = sys.argv
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try:
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sys.argv = [
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"compose",
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"--genre", "reggaeton",
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"--bpm", "0",
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"--key", "Am",
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"--output", "output/track.rpp",
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]
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with pytest.raises(ValueError, match="bpm must be > 0"):
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main()
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finally:
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sys.argv = original_argv
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def test_compose_negative_bpm_raises(self):
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"""main() with bpm=-10 raises ValueError."""
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from scripts.compose import main
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import sys
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original_argv = sys.argv
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try:
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sys.argv = [
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"compose",
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"--genre", "reggaeton",
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"--bpm", "-10",
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"--key", "Am",
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"--output", "output/track.rpp",
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]
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with pytest.raises(ValueError, match="bpm must be > 0"):
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main()
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finally:
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sys.argv = original_argv
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