baseline: initial working version

tests/test_main_cli.py

@@ -0,0 +1,61 @@
+"""Tests for CLI parser and translation config wiring."""
+
+from __future__ import annotations
+
+from main import _build_translation_config, build_parser
+
+
+def test_parser_accepts_lmstudio_flags():
+    parser = build_parser()
+
+    args = parser.parse_args(
+        [
+            "https://youtube.com/watch?v=demo",
+            "--translation-backend",
+            "lmstudio",
+            "--lmstudio-base-url",
+            "http://localhost:1234/v1",
+            "--lmstudio-model",
+            "gemma-custom",
+        ]
+    )
+
+    assert args.translation_backend == "lmstudio"
+    assert args.lmstudio_base_url == "http://localhost:1234/v1"
+    assert args.lmstudio_model == "gemma-custom"
+
+
+def test_translation_config_prefers_cli_over_env(monkeypatch):
+    monkeypatch.setenv("LM_STUDIO_BASE_URL", "http://env-host:1234/v1")
+    monkeypatch.setenv("LM_STUDIO_MODEL", "env-model")
+
+    parser = build_parser()
+    args = parser.parse_args(
+        [
+            "https://youtube.com/watch?v=demo",
+            "--lmstudio-base-url",
+            "http://cli-host:1234/v1",
+            "--lmstudio-model",
+            "cli-model",
+        ]
+    )
+
+    config = _build_translation_config(args)
+
+    assert config.base_url == "http://cli-host:1234/v1"
+    assert config.model == "cli-model"
+
+
+def test_translation_config_uses_env_defaults(monkeypatch):
+    monkeypatch.setenv("LM_STUDIO_BASE_URL", "http://env-host:1234/v1")
+    monkeypatch.setenv("LM_STUDIO_MODEL", "env-model")
+    monkeypatch.setenv("LM_STUDIO_API_KEY", "env-key")
+
+    parser = build_parser()
+    args = parser.parse_args(["https://youtube.com/watch?v=demo"])
+
+    config = _build_translation_config(args)
+
+    assert config.base_url == "http://env-host:1234/v1"
+    assert config.model == "env-model"
+    assert config.api_key == "env-key"