DatasetBuilderTestCase mentions new TFDS dummy_data folder format.

PiperOrigin-RevId: 794228212

Author: The TensorFlow Datasets Authors

tensorflow_datasets/testing/dataset_builder_testing.py

@@ -105,15 +105,19 @@ class DatasetBuilderTestCase(
       BUILDER_CONFIGS from the class will be tested.
     * DL_EXTRACT_RESULT: `dict[str, str]`, the returned result of mocked
       `download_and_extract` method. The values should be the path of files
-      present in the `fake_examples` directory, relative to that directory.
-      If not specified, path to `fake_examples` will always be returned.
+      present in the `fake_examples` (or `dummy_data`) directory, relative to
+      that directory.
+      If not specified, path to `fake_examples` (or `dummy_data`) will always be
+      returned.
     * DL_EXTRACT_ONLY_RESULT: `dict[str, str]`, the returned result of mocked
       `extract` method. The values should be the path of files present in the
-      `fake_examples` directory, relative to that directory. If not specified:
+      `fake_examples` (or `dummy_data`) directory, relative to that directory.
+      If not specified:
       will call DownloadManager `extract` method.
     * DL_DOWNLOAD_RESULT: `dict[str, str]`, the returned result of mocked
       `download_and_extract` method. The values should be the path of files
-      present in the `fake_examples` directory, relative to that directory.
+      present in the `fake_examples` (or `dummy_data`) directory, relative to
+      that directory.
       If not specified: will use DL_EXTRACT_RESULT (this is due to backwards
       compatibility and will be removed in the future).
     * EXAMPLE_DIR: `str`, the base directory in in which fake examples are
@@ -167,11 +171,9 @@ def setUpClass(cls):
           "Assign your DatasetBuilder class to %s.DATASET_CLASS." % name
       )
 
-    cls._available_cm = visibility.set_availables_tmp(
-        [
-            visibility.DatasetType.TFDS_PUBLIC,
-        ]
-    )
+    cls._available_cm = visibility.set_availables_tmp([
+        visibility.DatasetType.TFDS_PUBLIC,
+    ])
     cls._available_cm.__enter__()  # pylint: disable=protected-access
 
   @classmethod
@@ -398,9 +400,9 @@ def _test_checksums(self):
     err_msg = (
         "Did you forget to record checksums with `--register_checksums` ? See"
         " instructions at:"
-        " https://www.tensorflow.org/datasets/add_dataset#run_the_generation_codeIf"
-        " want to opt-out of checksums validation, please add `SKIP_CHECKSUMS ="
-        " True` to the `DatasetBuilderTestCase`.\n"
+        " https://www.tensorflow.org/datasets/add_dataset#run_the_generation_code"
+        " If you want to opt-out of checksums validation, please add "
+        " `SKIP_CHECKSUMS = True` to the `DatasetBuilderTestCase`.\n"
     )
     url_infos = self.dataset_class.url_infos
     filepath = self.dataset_class._checksums_path  # pylint: disable=protected-access
@@ -574,15 +576,13 @@ def _test_description_builder_config(self, builder):
 
     # If configs specified, ensure they are all valid
     if builder.builder_config and builder.builder_config.description:
-      err_msg = textwrap.dedent(
-          """\
+      err_msg = textwrap.dedent("""\
           The BuilderConfig description should be a one-line description of
           the config.
           It shouldn't be the same as `builder.info.description` to avoid
           redundancy. Both `config.description` and `builder.info.description`
           will be displayed in the catalog.
-          """
-      )
+          """)
       ratio = difflib.SequenceMatcher(
           None,
           builder.builder_config.description,