import unittest

from src.lyricflow_core.api.analysis import analysis_service


class TestLyricAnalysisService(unittest.TestCase):
    def test_similarity_available(self):
        score = analysis_service.similarity("cat", "mat")
        self.assertGreaterEqual(score, 0.5)

    def test_lmd_syntax_filtered_in_density(self):
        text = "# Header\n[Voice: The Jester]\ncat bat"
        densities = analysis_service.line_densities(text)
        self.assertEqual([0.0, 0.0, 1.0], densities)

    def test_suggestions_shape(self):
        results = analysis_service.suggestions("cat")
        self.assertIn("perfect", results)
        self.assertIn("slant", results)


if __name__ == "__main__":
    unittest.main()