added testing data

test_data/module_file/module_file.py

@@ -0,0 +1,32 @@
+# Copyright 2021 Google LLC. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Supplement for chicago taxi pipeline example with specifics schema modification.
+This module file will be used in the custom schema curation component.
+"""
+
+import tensorflow_data_validation as tfdv
+
+# TFX schema curation component will call this function.
+
+def schema_fn(schema):
+  """modifies the infered schema.
+  Args:
+    schema:schema generated by SchemaGen component of tfx
+  """
+  #changing "tips" into optional feature
+  feature = tfdv.get_feature(schema, 'tips') 
+  feature.presence.min_fraction = 0.9
+
+  return schema