TEST: Updated a test case to reflect an update with HTTP errors fix

Signed-off-by: Andrei Batomunkuev <abatomunkuev@myseneca.ca>

tests/models/test_cli.py

@@ -452,8 +452,8 @@ def _validate_with_rest_endpoint(scoring_proc, host_port, df, x, sk_model):
         # Try examples of bad input, verify we get a non-200 status code
         for content_type in [CONTENT_TYPE_JSON_SPLIT_ORIENTED, CONTENT_TYPE_CSV, CONTENT_TYPE_JSON]:
             scoring_response = endpoint.invoke(data="", content_type=content_type)
-            assert scoring_response.status_code == 500, (
-                "Expected server failure with error code 500, got response with status code %s "
+            assert scoring_response.status_code == 400, (
+                "Expected server failure with error code 400, got response with status code %s "
                 "and body %s" % (scoring_response.status_code, scoring_response.text)
             )
             scoring_response_dict = json.loads(scoring_response.content)