test(assistantv2): Update assistantv2 tests

test/unit/test_assistant_v2.py

@@ -2,6 +2,7 @@
 import json
 import responses
 import ibm_watson
+from ibm_cloud_sdk_core.authenticators import BasicAuthenticator
 
 platform_url = 'https://gateway.watsonplatform.net'
 service_path = '/assistant/api'
@@ -18,8 +19,9 @@ def test_create_session():
         body=json.dumps(response),
         status=200,
         content_type='application/json')
+    authenticator = BasicAuthenticator('username', 'password')
     service = ibm_watson.AssistantV2(
-        username='username', password='password', version='2017-02-03')
+        version='2017-02-03', authenticator=authenticator)
     session = service.create_session('bogus_id').get_result()
     assert len(responses.calls) == 1
     assert responses.calls[0].request.url.startswith(url)
@@ -38,8 +40,9 @@ def test_delete_session():
         body=json.dumps(response),
         status=200,
         content_type='application/json')
+    authenticator = BasicAuthenticator('username', 'password')
     service = ibm_watson.AssistantV2(
-        username='username', password='password', version='2017-02-03')
+        version='2017-02-03', authenticator=authenticator)
     delete_session = service.delete_session('bogus_id',
                                             'session_id').get_result()
     assert len(responses.calls) == 1
@@ -73,8 +76,9 @@ def test_message():
         body=json.dumps(response),
         status=200,
         content_type='application/json')
+    authenticator = BasicAuthenticator('username', 'password')
     service = ibm_watson.AssistantV2(
-        username='username', password='password', version='2017-02-03')
+        version='2017-02-03', authenticator=authenticator)
     message = service.message(
         'bogus_id', 'session_id', input={
             'text': 'What\'s the weather like?'