Music21 Composer MCP

"""Tests for HTTP adapter.""" import pytest from fastapi.testclient import TestClient from composer_mcp.adapters.http_adapter import app @pytest.fixture def client(): """Create a test client.""" return TestClient(app) class TestHealthCheck: """Tests for health check endpoint.""" def test_health_check(self, client): """Health check returns healthy status.""" response = client.get("/health") assert response.status_code == 200 data = response.json() assert data["status"] == "healthy" assert "version" in data class TestExportMidiEndpoint: """Tests for /export_midi endpoint.""" def test_export_simple_notes(self, client): """Export simple notes via HTTP.""" response = client.post( "/export_midi", json={ "stream": "C4, D4, E4, G4", "tempo": 120, }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert "midi" in data["data"] assert "base64" in data["data"]["midi"] def test_export_with_all_options(self, client): """Export with all options specified.""" response = client.post( "/export_midi", json={ "stream": "C4:q, D4:q, E4:h", "input_format": "notes", "tempo": 100, "humanize": True, "humanize_amount": 0.3, "velocity_curve": "crescendo", "include_abc": True, }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert data["data"]["abc"] is not None def test_export_empty_stream_fails(self, client): """Empty stream returns 400.""" response = client.post( "/export_midi", json={"stream": ""}, ) # Pydantic validation catches empty string assert response.status_code == 422 def test_export_invalid_tempo(self, client): """Invalid tempo returns 422.""" response = client.post( "/export_midi", json={ "stream": "C4, D4", "tempo": 500, # Max is 300 }, ) assert response.status_code == 422 class TestGenerateMelodyEndpoint: """Tests for /generate_melody endpoint.""" def test_generate_melody_basic(self, client): """Generate a simple melody.""" response = client.post( "/generate_melody", json={ "key": "C major", "length_measures": 2, }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert "melody" in data["data"] assert "metadata" in data["data"] assert data["data"]["metadata"]["measures"] == 2 def test_generate_melody_with_constraints(self, client): """Generate melody with contour and range constraints.""" response = client.post( "/generate_melody", json={ "key": "D dorian", "length_measures": 4, "contour": "arch", "range_low": "D4", "range_high": "D5", "rhythmic_density": "sparse", "seed": 42, }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert data["data"]["metadata"]["key"] == "D dorian" assert data["data"]["metadata"]["seed_used"] == 42 def test_generate_melody_invalid_key(self, client): """Invalid key format returns 422.""" response = client.post( "/generate_melody", json={ "key": "invalid", "length_measures": 4, }, ) assert response.status_code == 422 class TestRealizeChordEndpoint: """Tests for /realize_chord endpoint.""" def test_realize_chord_basic(self, client): """Realize a simple chord.""" response = client.post( "/realize_chord", json={"chord_symbol": "Cmaj7"}, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert "voicing" in data["data"] assert "analysis" in data["data"] assert len(data["data"]["voicing"]["notes"]) > 0 def test_realize_chord_with_style(self, client): """Realize chord with drop2 voicing.""" response = client.post( "/realize_chord", json={ "chord_symbol": "Dm7", "voicing_style": "drop2", "instrument": "guitar", }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True assert data["data"]["analysis"]["voicing_style"] == "drop2" def test_realize_chord_slash(self, client): """Realize chord with custom bass note.""" response = client.post( "/realize_chord", json={ "chord_symbol": "G7", "bass_note": "B2", }, ) assert response.status_code == 200 data = response.json() assert data["success"] is True # Bass note should be the lowest notes = data["data"]["voicing"]["notes"] assert notes[0].startswith("B") class TestNotImplementedEndpoints: """Tests for not-yet-implemented endpoints.""" def test_transform_phrase_not_implemented(self, client): """transform_phrase returns not implemented.""" response = client.post( "/transform_phrase", json={ "input_stream": "C4, D4, E4", "transformation": "sequence", }, ) assert response.status_code == 200 data = response.json() assert data["success"] is False def test_reharmonize_not_implemented(self, client): """reharmonize returns not implemented.""" response = client.post( "/reharmonize", json={ "melody": "C4, D4, E4", "style": "jazz", }, ) assert response.status_code == 200 data = response.json() assert data["success"] is False def test_add_voice_not_implemented(self, client): """add_voice returns not implemented.""" response = client.post( "/add_voice", json={ "existing_voice": "C4, D4, E4", "new_voice_type": "bass", }, ) assert response.status_code == 200 data = response.json() assert data["success"] is False