adding in the test_logger file and updating the readme to include ins… (#63)

* adding in the test_logger file and updating the readme to include installing Docker

* update to test_logger file, adding to integration tests also

* adding in docstring

* ran yapf for style comformity

* updating docstring of client.py to show how to increase verbosity of output

Author: jtsodapop

README.md

@@ -34,7 +34,7 @@ client = Client()
 Please consult `CONTRIB.md`
 
 ## Testing
-1. Update the `Makefile` with your `staging` or `prod` API key.  Make sure the key is not from a free tier account.
+1. Update the `Makefile` with your `staging` or `prod` API key. Ensure that docker has been installed on your system. Make sure the key is not from a free tier account.
 2. To test on `staging`:
 ```
 make test-staging

labelbox/client.py

@@ -44,6 +44,18 @@ def __init__(self,
             labelbox.exceptions.AuthenticationError: If no `api_key`
                 is provided as an argument or via the environment
                 variable.
+
+        Logging:
+            Logging is defaulted to level WARNING. To receive more verbose 
+                output to console, update logging.level to the 
+                appropriate level.
+
+            Example:
+                #get updated on console when client is instantiated
+                import logger
+
+                logging.basicConfig(level = logging.INFO)
+                client = Client("<APIKEY>")                
         """
         if api_key is None:
             if _LABELBOX_API_KEY not in os.environ:

tests/integration/test_logger.py

@@ -0,0 +1,20 @@
+from labelbox import Client
+import pytest
+import logging
+
+
+def test_client_log(caplog, project):
+    """
+    This file tests that the logger will properly output to the console after updating logging level
+
+    The default level is set to WARNING
+
+    There is an expected output after setting logging level to DEBUG
+    """
+
+    project.export_labels()
+    assert '' == caplog.text
+
+    with caplog.at_level(logging.DEBUG):
+        project.export_labels()
+        assert "label export, waiting for server..." in caplog.text