first commit

tests/providers/test_tts.py

@@ -0,0 +1,51 @@
+from __future__ import annotations
+
+import os
+from unittest import mock
+import unittest
+
+from app.providers import tts as tts_module
+from app.providers.tts import FakeTTS, build_tts_provider_from_env
+
+
+class ProviderTTSTests(unittest.TestCase):
+    def test_build_tts_provider_from_env_returns_reason_when_provider_is_unsupported(self) -> None:
+        with mock.patch.dict(os.environ, {}, clear=True):
+            provider, reason = build_tts_provider_from_env("azure")
+
+        self.assertIsNone(provider)
+        self.assertEqual(reason, "unsupported_tts_provider:azure")
+
+    def test_build_tts_provider_from_env_returns_reason_when_elevenlabs_sdk_is_missing(self) -> None:
+        with mock.patch.dict(
+            os.environ,
+            {
+                "ELEVENLABS_API_KEY": "key-123",
+                "ELEVENLABS_VOICE_ID": "voice-123",
+            },
+            clear=True,
+        ):
+            with mock.patch.object(tts_module, "_is_elevenlabs_available", return_value=False):
+                provider, reason = build_tts_provider_from_env("elevenlabs")
+
+        self.assertIsNone(provider)
+        self.assertEqual(reason, "missing_elevenlabs_sdk")
+
+    def test_build_tts_provider_from_env_returns_fake_provider(self) -> None:
+        with mock.patch.dict(
+            os.environ,
+            {
+                "FAKE_TTS_TONE_HZ": "512",
+                "FAKE_TTS_CHAR_DURATION_MS": "18",
+            },
+            clear=True,
+        ):
+            provider, reason = build_tts_provider_from_env("fake")
+
+        self.assertIsInstance(provider, FakeTTS)
+        self.assertIsNone(reason)
+        self.assertGreater(len(provider.synthesize_pcm16k("teste fake")), 0)
+
+
+if __name__ == "__main__":
+    unittest.main()