Refactor & add the first test !

app/main.py

@@ -6,7 +6,7 @@ from app.app import create_app
 from app.default_values import DEFAULT_ARGUMENTS as DEFARGS
 
 
-def main():
+def get_args():
     parser = argparse.ArgumentParser(
         description="LibreTranslate - Free and Open Source Translation API"
     )
@@ -106,13 +106,18 @@ def main():
         "--suggestions", default=DEFARGS['SUGGESTIONS'], action="store_true", help="Allow user suggestions"
     )
     parser.add_argument(
-        "--disable-files-translation", default=DEFARGS['DISABLE_FILES_TRANSLATION'], action="store_true", help="Disable files translation"
+        "--disable-files-translation", default=DEFARGS['DISABLE_FILES_TRANSLATION'], action="store_true",
+        help="Disable files translation"
     )
     parser.add_argument(
         "--disable-web-ui", default=DEFARGS['DISABLE_WEB_UI'], action="store_true", help="Disable web ui"
     )
 
-    args = parser.parse_args()
+    return parser.parse_args()
+
+
+def main():
+    args = get_args()
     app = create_app(args)
 
     if sys.argv[0] == '--wsgi':

tests/test_api.py

@@ -0,0 +1,25 @@
+import pytest
+import sys
+import json
+from app.app import create_app
+from app.main import get_args
+
+@pytest.fixture()
+def app():
+    sys.argv=['']
+    app = create_app(get_args())
+
+    yield app
+
+
+@pytest.fixture()
+def client(app):
+    return app.test_client()
+
+def test_api_get_languages(client):
+    response = client.get("/languages")
+    response_json = json.loads(response.data)
+
+    assert "code" in response_json[0] and "name" in response_json[0]
+    assert len(response_json) >= 1
+    assert response.status_code == 200