here's one big commit

examples/run_summarization_finetuning_test.py

@@ -0,0 +1,76 @@
+# coding=utf-8
+# Copyright 2019 HuggingFace Inc.
+#
+# 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
+#
+#     http://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.
+import unittest
+
+from run_summarization_finetuning import _fit_to_block_size, process_story
+
+
+class DataLoaderTest(unittest.TestCase):
+    def setUp(self):
+        self.block_size = 10
+
+    def test_truncate_sequence_too_small(self):
+        """ Pad the sequence with 0 if the sequence is smaller than the block size."""
+        sequence = [1, 2, 3, 4]
+        expected_output = [1, 2, 3, 4, 0, 0, 0, 0, 0, 0]
+        self.assertEqual(_fit_to_block_size(sequence, self.block_size), expected_output)
+
+    def test_truncate_sequence_fit_exactly(self):
+        sequence = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        expected_output = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        self.assertEqual(_fit_to_block_size(sequence, self.block_size), expected_output)
+
+    def test_truncate_sequence_too_big(self):
+        sequence = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]
+        expected_output = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
+        self.assertEqual(_fit_to_block_size(sequence, self.block_size), expected_output)
+
+    def test_process_story_no_highlights(self):
+        """ Processing a story with no highlights should raise an exception.
+        """
+        raw_story = """It was the year of Our Lord one thousand seven hundred and
+        seventy-five.\n\nSpiritual revelations were conceded to England at that
+        favoured period, as at this."""
+        _, summary = process_story(raw_story)
+        self.assertEqual(summary, [])
+
+    def test_process_empty_story(self):
+        """ An empty story should also raise and exception.
+        """
+        raw_story = ""
+        story, summary = process_story(raw_story)
+        self.assertEqual(story, [])
+        self.assertEqual(summary, [])
+
+    def test_story_with_missing_period(self):
+        raw_story = (
+            "It was the year of Our Lord one thousand seven hundred and "
+            "seventy-five\n\nSpiritual revelations were conceded to England "
+            "at that favoured period, as at this.\n@highlight\n\nIt was the best of times"
+        )
+        story_lines, summary_lines = process_story(raw_story)
+
+        expected_story_lines = [
+            "It was the year of Our Lord one thousand seven hundred and seventy-five.",
+            "Spiritual revelations were conceded to England at that favoured period, as at this.",
+        ]
+        self.assertEqual(expected_story_lines, story_lines)
+
+        expected_summary_lines = ["It was the best of times."]
+        self.assertEqual(expected_summary_lines, summary_lines)
+
+
+if __name__ == "__main__":
+    unittest.main()