feat: configure [backend] loads existing backend config rather than just overwriting it

1 files changed, 77 insertions, 0 deletions

diff --git a/app/tests/test_backends_faster.py b/app/tests/test_backends_faster.py
index 641f6ee..21baea7 100644
--- a/app/tests/test_backends_faster.py
+++ b/app/tests/test_backends_faster.py
@@ -80,6 +80,83 @@ class BuildVoicesTests(unittest.TestCase):
         self.assertEqual(mock_transcribe.call_args.kwargs["model_name"], "large-v3")
 
 
+class LoadVoicesTests(unittest.TestCase):
+    """load_voices: read voices.json, or {} when unusable."""
+
+    def setUp(self):
+        self._tmp = tempfile.TemporaryDirectory()
+        self.dir = Path(self._tmp.name)
+        self.path = self.dir / "voices.json"
+
+    def tearDown(self):
+        self._tmp.cleanup()
+
+    def test_reads_dict_document(self):
+        self.path.write_text(json.dumps({"narrator": {"ref_text": "hi"}}),
+                             encoding="utf-8")
+        self.assertEqual(make_voices.load_voices(self.path),
+                         {"narrator": {"ref_text": "hi"}})
+
+    def test_missing_file_returns_empty(self):
+        self.assertEqual(make_voices.load_voices(self.path), {})
+
+    def test_unreadable_json_returns_empty(self):
+        self.path.write_text("not json", encoding="utf-8")
+        self.assertEqual(make_voices.load_voices(self.path), {})
+
+    def test_non_dict_document_returns_empty(self):
+        self.path.write_text("[1, 2]", encoding="utf-8")
+        self.assertEqual(make_voices.load_voices(self.path), {})
+
+
+class DecideFasterTranscriptionTests(unittest.TestCase):
+    """_decide_faster_transcription: the re-transcribe plan questions."""
+
+    def setUp(self):
+        self._tmp = tempfile.TemporaryDirectory()
+        self.folder = Path(self._tmp.name)
+        self.narrator = self.folder / "narrator.wav"
+        self.narrator.write_bytes(b"x")
+        self.new_voice = self.folder / "new.wav"
+        self.new_voice.write_bytes(b"x")
+
+    def tearDown(self):
+        self._tmp.cleanup()
+
+    def test_new_voices_default_to_missing_mode(self):
+        confirm = lambda q, default=True: True  # noqa: E731
+        plan = make_voices._decide_faster_transcription(
+            [self.narrator, self.new_voice],
+            {"narrator": {"ref_text": "old"}}, confirm)
+        self.assertEqual(plan["mode"], "missing")
+        self.assertEqual([w.name for w in plan["missing"]], ["new.wav"])
+
+    def test_declining_new_voices_transcribes_all(self):
+        confirm = lambda q, default=True: False  # noqa: E731
+        plan = make_voices._decide_faster_transcription(
+            [self.narrator, self.new_voice],
+            {"narrator": {"ref_text": "old"}}, confirm)
+        self.assertEqual(plan["mode"], "all")
+
+    def test_no_new_voices_offers_retranscribe_default_no(self):
+        confirm = lambda q, default=True: default  # noqa: E731
+        plan = make_voices._decide_faster_transcription(
+            [self.narrator], {"narrator": {"ref_text": "old"}}, confirm)
+        self.assertEqual(plan["mode"], "keep")
+
+    def test_no_new_voices_accepted_retranscribes_all(self):
+        confirm = lambda q, default=True: True  # noqa: E731
+        plan = make_voices._decide_faster_transcription(
+            [self.narrator], {"narrator": {"ref_text": "old"}}, confirm)
+        self.assertEqual(plan["mode"], "all")
+
+    def test_cancel_returns_none(self):
+        confirm = lambda q, default=True: None  # noqa: E731
+        plan = make_voices._decide_faster_transcription(
+            [self.narrator], {"narrator": {"ref_text": "old"}}, confirm)
+        self.assertIsNone(plan)
+
+
 class MainTests(unittest.TestCase):
     """The flag-only (non-TUI) path through main(), end to end."""