add another test for empty oauth properties

Author: hpal

tests/catalog/test_rest.py

@@ -161,6 +161,26 @@ def test_token_with_optional_oauth_params(rest_mock: Mocker) -> None:
     assert TEST_RESOURCE in mock_request.last_request.text
 
 
+def test_token_with_optional_oauth_params_as_null(rest_mock: Mocker) -> None:
+    mock_request = rest_mock.post(
+        f"{TEST_URI}v1/oauth/tokens",
+        json={
+            "access_token": TEST_TOKEN,
+            "token_type": "Bearer",
+            "expires_in": 86400,
+            "issued_token_type": "urn:ietf:params:oauth:token-type:access_token",
+        },
+        status_code=200,
+        request_headers=OAUTH_TEST_HEADERS,
+    )
+    assert (
+        RestCatalog("rest", uri=TEST_URI, credential=TEST_CREDENTIALS, audience="", resource="")._session.headers["Authorization"]
+        == f"Bearer {TEST_TOKEN}"
+    )
+    assert TEST_AUDIENCE not in mock_request.last_request.text
+    assert TEST_RESOURCE not in mock_request.last_request.text
+
+
 def test_token_200_w_auth_url(rest_mock: Mocker) -> None:
     rest_mock.post(
         TEST_AUTH_URL,