REAPER MCP Server

#!/usr/bin/env python3 """ Integration tests for Core API, Audio, Track Extended, and Utility functions Tests the MCP tools with the REAPER Lua bridge """ import pytest import pytest_asyncio import asyncio import os from pathlib import Path from .test_utils import ( ensure_clean_project, assert_response_contains, assert_response_success ) @pytest.mark.asyncio async def test_api_exists(reaper_mcp_client): """Test checking if API functions exist""" # Ensure clean project state await ensure_clean_project(reaper_mcp_client) # Test with a function that should exist result = await reaper_mcp_client.call_tool( "api_exists", {"function_name": "CountTracks"} ) assert result is not None assert_response_contains(result, "exists") assert_response_contains(result, "counttracks") # Test with a function that should not exist result = await reaper_mcp_client.call_tool( "api_exists", {"function_name": "NonExistentFunction123"} ) assert result is not None assert_response_contains(result, "does not exist") @pytest.mark.asyncio async def test_get_last_color_theme_file(reaper_mcp_client): """Test getting the last color theme file""" # Ensure clean project state await ensure_clean_project(reaper_mcp_client) result = await reaper_mcp_client.call_tool( "get_last_color_theme_file", {} ) assert result is not None # Result might be empty if no theme loaded, but should not fail print(f"Last color theme: {result.content[0].text}") @pytest.mark.asyncio async def test_get_toggle_command_state(reaper_mcp_client): """Test getting toggle command state""" # Test with a known command ID (40041 = Toggle auto-crossfade on split) result = await reaper_mcp_client.call_tool( "get_toggle_command_state", {"command_id": 40041} ) assert result is not None assert "state:" in result.content[0].text.lower() assert any(state in result.content[0].text.lower() for state in ["on", "off", "not found"]) @pytest.mark.asyncio async def test_media_source_properties(reaper_mcp_client): """Test getting media source sample rate and channels""" # First create a track await reaper_mcp_client.call_tool( "insert_track", {"index": 0} ) # Add a media item result = await reaper_mcp_client.call_tool( "add_media_item_to_track", {"track_index": 0} ) # For this test, we'll need an audio file. Let's check if we can create a source from a test file # First, let's see if we have any audio files in the test directory test_audio_files = [ "/System/Library/Sounds/Glass.aiff", # macOS system sound "/System/Library/Sounds/Ping.aiff", # macOS system sound "/usr/share/sounds/alsa/Noise.wav", # Linux "C:\\Windows\\Media\\Windows Ding.wav" # Windows ] audio_file = None for file in test_audio_files: if os.path.exists(file): audio_file = file break if not audio_file: pytest.skip("No test audio file available") # Add audio source to the item result = await reaper_mcp_client.call_tool( "pcm_source_create_from_file", { "filename": audio_file, "item_index": 0, "take_index": 0 } ) # Test sample rate result = await reaper_mcp_client.call_tool( "get_media_source_sample_rate", { "item_index": 0, "take_index": 0 } ) assert result is not None assert "sample rate" in result.content[0].text.lower() assert "hz" in result.content[0].text.lower() # Test number of channels result = await reaper_mcp_client.call_tool( "get_media_source_num_channels", { "item_index": 0, "take_index": 0 } ) assert result is not None assert "channels" in result.content[0].text.lower() assert any(ch in result.content[0].text.lower() for ch in ["mono", "stereo", "channels"]) @pytest.mark.asyncio async def test_track_visibility(reaper_mcp_client): """Test checking track visibility""" # Insert a track await reaper_mcp_client.call_tool( "insert_track", {"index": 0} ) # Check TCP visibility result = await reaper_mcp_client.call_tool( "is_track_visible", { "track_index": 0, "mixer": False } ) assert result is not None assert "track control panel" in result.content[0].text.lower() assert "visible" in result.content[0].text.lower() # Check mixer visibility result = await reaper_mcp_client.call_tool( "is_track_visible", { "track_index": 0, "mixer": True } ) assert result is not None assert "mixer" in result.content[0].text.lower() assert "visible" in result.content[0].text.lower() @pytest.mark.asyncio async def test_set_only_track_selected(reaper_mcp_client): """Test setting only one track selected""" # Insert multiple tracks for i in range(3): await reaper_mcp_client.call_tool( "insert_track", {"index": i} ) # Select all tracks first for i in range(3): await reaper_mcp_client.call_tool( "set_track_selected", { "track_index": i, "selected": True } ) # Check that multiple tracks are selected result = await reaper_mcp_client.call_tool( "count_selected_tracks", {} ) assert "3" in result.content[0].text # Set only track 1 selected result = await reaper_mcp_client.call_tool( "set_only_track_selected", {"track_index": 1} ) assert "only selected track" in result.content[0].text.lower() # Verify only one track is selected result = await reaper_mcp_client.call_tool( "count_selected_tracks", {} ) assert "1" in result.content[0].text # Verify it's track 1 result = await reaper_mcp_client.call_tool( "get_selected_track", {"index": 0} ) assert "index 1" in result.content[0].text.lower() @pytest.mark.asyncio async def test_db_slider_conversion(reaper_mcp_client): """Test dB to slider and slider to dB conversion""" # Test dB to slider test_values = [0, -6, -12, -20, -40] for db in test_values: result = await reaper_mcp_client.call_tool( "db_to_slider", {"db": db} ) assert result is not None assert str(db) in result.content[0].text assert "dB" in result.content[0].text assert "slider value" in result.content[0].text print(f"DB to slider: {result.content[0].text}") # Test slider to dB test_sliders = [0.0, 0.25, 0.5, 0.75, 1.0] for slider in test_sliders: result = await reaper_mcp_client.call_tool( "slider_to_db", {"slider": slider} ) assert result is not None assert f"{slider}" in result.content[0].text assert "dB" in result.content[0].text print(f"Slider to dB: {result.content[0].text}") # Test round-trip conversion original_db = -6.0 # Convert to slider result = await reaper_mcp_client.call_tool( "db_to_slider", {"db": original_db} ) # Extract slider value from result slider_val = float(result.content[0].text.split("=")[1].split("(")[0].strip()) # Convert back to dB result = await reaper_mcp_client.call_tool( "slider_to_db", {"slider": slider_val} ) # Extract dB value converted_db = float(result.content[0].text.split("=")[1].split("dB")[0].strip()) # Should be close to original (within 0.01 dB) assert abs(original_db - converted_db) < 0.01 print(f"Round-trip conversion: {original_db} dB -> {slider_val} -> {converted_db} dB")