feat: professional reggaeton production engine — 7 SDD changes, 302 tests
- section-energy: track activity matrix + volume/velocity multipliers per section - smart-chords: ChordEngine with voice leading, inversions, 4 emotion modes - hook-melody: melody engine with hook/stabs/smooth styles, call-and-response - mix-calibration: Calibrator module (LUFS volumes, HPF/LPF, stereo, sends, master) - transitions-fx: FX track with risers/impacts/sweeps at section boundaries - sidechain: MIDI CC11 bass ducking on kick hits via DrumLoopAnalyzer - presets-pack: role-aware plugin presets (Serum/Decapitator/Omnisphere per role) Full SDD pipeline (propose→spec→design→tasks→apply→verify) for all 7 changes. 302/302 tests passing.
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renato97
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tests/test_preset_transform.py
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194
tests/test_preset_transform.py
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"""Tests for role-aware preset system (presets-pack).
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Covers PresetTransformer, role-aware PLUGIN_PRESETS lookup,
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and thread-through via make_plugin → PluginDef.role → _build_plugin.
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"""
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from __future__ import annotations
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import base64
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import json
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import pytest
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from src.reaper_builder.preset_transformer import PresetTransformer
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from src.reaper_builder import PLUGIN_PRESETS, PLUGIN_REGISTRY
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# ---------------------------------------------------------------------------
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# PresetTransformer unit tests
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# ---------------------------------------------------------------------------
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class TestPresetTransformer:
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"""PresetTransformer derives role-specific preset data."""
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def test_derive_serum_returns_list(self):
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"""derive() for Serum_2 returns a list of chunks."""
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default = PLUGIN_PRESETS.get(("Serum_2", ""))
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assert default is not None, "Serum_2 default preset must exist"
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result = PresetTransformer.derive("Serum_2", default, "bass")
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assert isinstance(result, list)
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assert len(result) == len(default)
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assert all(isinstance(c, str) for c in result)
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def test_derive_decapitator_returns_list(self):
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"""derive() for Decapitator returns a list of chunks."""
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default = PLUGIN_PRESETS.get(("Decapitator", ""))
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assert default is not None, "Decapitator default preset must exist"
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result = PresetTransformer.derive("Decapitator", default, "drums")
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assert isinstance(result, list)
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assert len(result) == len(default)
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def test_derive_omnisphere_returns_list(self):
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"""derive() for Omnisphere returns a list of chunks."""
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default = PLUGIN_PRESETS.get(("Omnisphere", ""))
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assert default is not None, "Omnisphere default preset must exist"
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result = PresetTransformer.derive("Omnisphere", default, "pad")
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assert isinstance(result, list)
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assert len(result) == len(default)
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def test_derive_unknown_plugin_returns_default(self):
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"""derive() for unsupported plugin returns original chunks."""
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chunks = ["mock_chunk_1", "mock_chunk_2"]
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result = PresetTransformer.derive("NonexistentPlugin", chunks, "lead")
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assert result == chunks
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def test_derive_preserves_chunk_count(self):
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"""derive() output has same number of chunks as input."""
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for plugin in ["Serum_2", "Decapitator", "Omnisphere"]:
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default = PLUGIN_PRESETS.get((plugin, ""))
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if not default:
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continue
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for role in ["bass", "lead", "drums", "pad"]:
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result = PresetTransformer.derive(plugin, default, role)
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assert len(result) == len(default), (
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f"{plugin}/{role} chunk count mismatch: "
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f"got {len(result)}, expected {len(default)}"
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)
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# ---------------------------------------------------------------------------
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# Role-aware preset structure tests
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# ---------------------------------------------------------------------------
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class TestRoleAwarePresets:
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"""PLUGIN_PRESETS is structured as {(plugin, role): chunks}."""
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def test_default_role_entries_exist(self):
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"""All known plugins have a "" (default) role entry."""
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flat_keys = set()
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for (name, role), _ in PLUGIN_PRESETS.items():
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if role == "":
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flat_keys.add(name)
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# At minimum, the multi-role targets must have defaults
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for name in ["Serum_2", "Decapitator", "Omnisphere"]:
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assert name in flat_keys, f"{name} must have default role entry"
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def test_role_specific_entries_exist(self):
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"""Multi-role plugins have their role-specific entries."""
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roles = {
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"Serum_2": ["bass", "lead"],
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"Decapitator": ["drumloop", "bass", "clap", "perc"],
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"Omnisphere": ["chords", "pad"],
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}
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for plugin, expected_roles in roles.items():
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for role in expected_roles:
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assert (plugin, role) in PLUGIN_PRESETS, (
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f"Missing ({plugin}, {role}) in PLUGIN_PRESETS"
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)
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def test_role_entries_non_empty(self):
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"""Role-specific entries contain non-empty preset data."""
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for (name, role), chunks in PLUGIN_PRESETS.items():
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if role != "" and name in ("Serum_2", "Decapitator", "Omnisphere"):
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assert len(chunks) > 0, (
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f"({name}, {role}) has empty preset data"
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)
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def test_unknown_role_falls_back_to_default(self):
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"""Role not present in PLUGIN_PRESETS → fall back to default."""
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# Simulate: a plugin has only default entry, no "pad" role
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# The lookup should return the "" entry
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from src.reaper_builder import _resolve_preset
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# Gullfoss_Master doesn't have multi-role entries, only ""
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result = _resolve_preset("Gullfoss_Master", "pad")
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default = PLUGIN_PRESETS.get(("Gullfoss_Master", ""))
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assert result == default, (
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"Unknown role should fall back to default preset"
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)
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# ---------------------------------------------------------------------------
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# Integration: make_plugin + role threading
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# ---------------------------------------------------------------------------
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class TestMakePluginRoleThreading:
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"""make_plugin with role correctly sets PluginDef.role and preset_data."""
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def test_make_plugin_with_role_sets_role_field(self):
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"""make_plugin(key, idx, role=...) sets PluginDef.role."""
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from scripts.compose import make_plugin
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p = make_plugin("Serum_2", 0, role="bass")
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assert p.role == "bass"
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assert p.preset_data is not None
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def test_make_plugin_without_role_defaults_to_empty(self):
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"""make_plugin(key, idx) without role sets role="" (backward compat)."""
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from scripts.compose import make_plugin
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p = make_plugin("Decapitator", 0)
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assert p.role == ""
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def test_make_plugin_different_roles_lookup_correct_entries(self):
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"""Different roles resolve to their respective PLUGIN_PRESETS entries."""
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from scripts.compose import make_plugin
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# Both should return data — in MVP they're identical but structure is correct
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p_bass = make_plugin("Serum_2", 0, role="bass")
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p_lead = make_plugin("Serum_2", 0, role="lead")
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# Both should have non-None preset data
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assert p_bass.preset_data is not None, "bass role should have preset_data"
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assert p_lead.preset_data is not None, "lead role should have preset_data"
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# Both should be lists with content
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assert isinstance(p_bass.preset_data, list)
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assert isinstance(p_lead.preset_data, list)
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assert len(p_bass.preset_data) > 0
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assert len(p_lead.preset_data) > 0
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def test_make_plugin_unknown_role_falls_back(self):
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"""Unknown role returns preset from "" entry (if available)."""
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from scripts.compose import make_plugin
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# "pad" role is not valid for Serum_2 (Omnisphere handles pad)
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p = make_plugin("Serum_2", 0, role="pad")
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# Should still get the default Serum_2 preset
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assert p.preset_data is not None
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assert p.role == "pad"
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# ---------------------------------------------------------------------------
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# Backward compatibility
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# ---------------------------------------------------------------------------
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class TestBackwardCompatibility:
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"""Existing behavior preserved with no role."""
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def test_make_plugin_known_key_still_works(self):
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"""make_plugin with known registry key (no role) works as before."""
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from scripts.compose import make_plugin
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p = make_plugin("Decapitator", 0)
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assert p.name == "Decapitator"
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assert p.index == 0
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assert p.role == ""
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def test_make_plugin_unknown_key_still_works(self):
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"""make_plugin with unknown key (no role) returns PluginDef."""
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from scripts.compose import make_plugin
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p = make_plugin("NonExistent", 2)
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assert p.name == "NonExistent"
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assert p.index == 2
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assert p.role == ""
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