Update expected JSON encoding of Column dates

Author: jonmmease

chart_studio/tests/test_optional/test_utils/test_utils.py

@@ -1,4 +1,5 @@
 import json as _json
+from unittest import TestCase
 
 import _plotly_utils.utils
 from chart_studio.grid_objs import Column
@@ -7,19 +8,21 @@
     mixed_list, np_list
 
 
-def test_column_json_encoding():
-    columns = [
-        Column(numeric_list, 'col 1'),
-        Column(mixed_list, 'col 2'),
-        Column(np_list, 'col 3')
-    ]
-    json_columns = _json.dumps(
-        columns, cls=_plotly_utils.utils.PlotlyJSONEncoder, sort_keys=True
-    )
-    assert('[{"data": [1, 2, 3], "name": "col 1"}, '
-           '{"data": [1, "A", "2014-01-05", '
-           '"2014-01-05 01:01:01", '
-           '"2014-01-05 01:01:01.000001"], '
-           '"name": "col 2"}, '
-           '{"data": [1, 2, 3, null, null, null, '
-           '"2014-01-05"], "name": "col 3"}]' == json_columns)
+class TestJSONEncoder(TestCase):
+    def test_column_json_encoding(self):
+        columns = [
+            Column(numeric_list, 'col 1'),
+            Column(mixed_list, 'col 2'),
+            Column(np_list, 'col 3')
+        ]
+        json_columns = _json.dumps(
+            columns, cls=_plotly_utils.utils.PlotlyJSONEncoder, sort_keys=True
+        )
+        print(json_columns)
+        assert('[{"data": [1, 2, 3], "name": "col 1"}, '
+               '{"data": [1, "A", "2014-01-05T00:00:00", '
+               '"2014-01-05T01:01:01", '
+               '"2014-01-05T01:01:01.000001"], '
+               '"name": "col 2"}, '
+               '{"data": [1, 2, 3, null, null, null, '
+               '"2014-01-05T00:00:00"], "name": "col 3"}]' == json_columns)