music-app/backend/tests/test_services_advanced.py

"""Extended mood engine and SharePlay service tests."""
from unittest.mock import MagicMock, patch
from sqlalchemy.orm import Session


class TestAnalyzeLyrics:
    def test_all_zero_empty(self):
        from app.services.mood_engine import analyze_lyrics, MOOD_NAMES
        scores = analyze_lyrics("")
        assert all(v == 0.0 for v in scores.values())
        assert len(scores) == len(MOOD_NAMES)

    def test_none_input(self):
        from app.services.mood_engine import analyze_lyrics, MOOD_NAMES
        scores = analyze_lyrics(None)
        assert all(v == 0.0 for v in scores.values())

    def test_case_insensitive(self):
        from app.services.mood_engine import analyze_lyrics
        a = analyze_lyrics("I cry alone")
        b = analyze_lyrics("I CRY ALONE")
        assert a == b

    def test_normalized(self):
        from app.services.mood_engine import analyze_lyrics
        scores = analyze_lyrics("happy joy smile sunshine")
        assert max(scores.values()) <= 1.0

    def test_keyword_weights(self):
        from app.services.mood_engine import analyze_lyrics
        scores = analyze_lyrics("cry tears broken alone lonely heartbreak")
        assert scores["Sad"] == 1.0


class TestMoodEngineConstants:
    def test_mood_names(self):
        from app.services.mood_engine import MOOD_NAMES
        expected = ["Sad", "Happy", "Energetic", "Focused", "Chill",
                     "Romantic", "Angry", "Nostalgic", "Melancholy", "Dreamy"]
        assert MOOD_NAMES == expected

    def test_confidence_threshold(self):
        from app.services.mood_engine import CONFIDENCE_THRESHOLD
        assert 0 < CONFIDENCE_THRESHOLD < 1

    def test_keyword_counts(self):
        from app.services.mood_engine import MOOD_KEYWORDS
        for mood, keywords in MOOD_KEYWORDS.items():
            assert len(keywords) == 15


class TestGetMoodPlaylist:
    def test_empty_db(self):
        from app.services.mood_engine import get_mood_playlist
        from app.db.database import SessionLocal
        db = SessionLocal()
        songs = get_mood_playlist("happy", db, limit=50)
        assert songs == []
        db.close()


class TestSharePlayManager:
    def test_init(self):
        from app.services.shareplay import SharePlayManager
        m = SharePlayManager()
        assert m.rooms == {}
        assert m.connections == {}

    def test_create_room(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.create_room(db, creator="alice")
        assert result["creator_user"] == "alice"
        assert result["active_connections"] == 1
        assert result["id"] in m.rooms
        db.close()

    def test_join_room(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        room = m.create_room(db, creator="alice")
        result = m.join_room(db, room["id"])
        assert result["active_connections"] == 2
        assert "state" in result
        db.close()

    def test_join_nonexistent(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.join_room(db, "nonexistent")
        assert result is None
        db.close()

    def test_leave_room(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        room = m.create_room(db, creator="alice")
        result = m.leave_room(db, room["id"])
        assert result is True
        db.close()

    def test_leave_nonexistent(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.leave_room(db, "nonexistent")
        assert result is False
        db.close()

    def test_get_state(self):
        from app.services.shareplay import SharePlayManager
        m = SharePlayManager()
        assert m.get_state("nonexistent") is None

    def test_update_state(self):
        from app.services.shareplay import SharePlayManager
        m = SharePlayManager()
        m.rooms["test"] = {"is_playing": False, "position": 0}
        result = m.update_state("test", is_playing=True)
        assert result["is_playing"] is True

    def test_update_state_nonexistent(self):
        from app.services.shareplay import SharePlayManager
        m = SharePlayManager()
        result = m.update_state("nonexistent", is_playing=True)
        assert result is None

    def test_get_cue_empty(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.get_cue(db, "any_room")
        assert result == []
        db.close()

    def test_add_to_cue_nonexistent_song(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.add_to_cue(db, "room1", "nonexistent_song", "alice")
        assert result is False
        db.close()

    def test_next_cue_empty(self):
        from app.services.shareplay import SharePlayManager
        from app.db.database import SessionLocal
        db = SessionLocal()
        m = SharePlayManager()
        result = m.next_cue(db, "room1")
        assert result is None
        db.close()