add testcase for csv upload

app/api/tests/data/example.csv

@@ -1,4 +1,4 @@
-text,label
-AAA,Positive
-BBB,Positive
+text,label,meta
+AAA
+BBB,Positive,The following is meta data
 CCC,Negative

app/api/tests/test_api.py

@@ -1195,11 +1195,11 @@ class TestUploader(APITestCase):
                                 file_format='csv',
                                 expected_status=status.HTTP_201_CREATED)
 
-    def test_cannot_upload_csv_file_does_not_match_column_and_row(self):
+    def test_can_upload_csv_file_does_not_match_column_and_row(self):
         self.upload_test_helper(project_id=self.classification_project.id,
-                                filename='example.invalid.1.csv',
+                                filename='example_column_and_row_not_matching.csv',
                                 file_format='csv',
-                                expected_status=status.HTTP_400_BAD_REQUEST)
+                                expected_status=status.HTTP_201_CREATED)
 
     def test_cannot_upload_csv_file_has_too_many_columns(self):
         self.upload_test_helper(project_id=self.classification_project.id,