Add 360giving csv roundtrip test

Author: Bjwebb

flattentool/tests/test_roundtrip.py

@@ -32,7 +32,7 @@ def test_roundtrip(tmpdir, output_format):
 
 
 @pytest.mark.parametrize('use_titles', [False, True])
-@pytest.mark.parametrize('output_format', ['xlsx'])#, 'csv'])
+@pytest.mark.parametrize('output_format', ['xlsx', 'csv'])
 def test_roundtrip_360(tmpdir, output_format, use_titles):
     input_name = 'flattentool/tests/fixtures/WellcomeTrust-grants_fixed_2_grants.json'
     flatten(
@@ -56,4 +56,10 @@ def test_roundtrip_360(tmpdir, output_format, use_titles):
     original_json = json.load(open(input_name))
     roundtripped_json = json.load(tmpdir.join('roundtrip.json'))
 
+    # Currently not enough information to successfully roundtrip that values
+    # are numbers, when this is not required by the schema
+    if output_format == 'csv':
+        for grant in original_json['grants']:
+            grant['plannedDates'][0]['duration'] = str(grant['plannedDates'][0]['duration'])
+
     assert original_json == roundtripped_json