Introduce code from Rust monorepo. This is a mess

tts/NeMo/tests/nemo_text_processing/utils.py

@@ -0,0 +1,54 @@
+# Copyright (c) 2021, NVIDIA CORPORATION.  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
+#
+#     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 os
+
+try:
+    import pynini
+
+    PYNINI_AVAILABLE = True
+except (ImportError, ModuleNotFoundError):
+    PYNINI_AVAILABLE = False
+
+
+def parse_test_case_file(file_name: str):
+    """
+    Prepares tests pairs for ITN and TN tests
+    """
+    test_pairs = []
+    with open(os.path.dirname(os.path.abspath(__file__)) + os.path.sep + file_name, 'r') as f:
+        for line in f:
+            spoken, written = line.split('~')
+            test_pairs.append((spoken, written.strip("\n")))
+    return test_pairs
+
+
+def get_test_cases_multiple(file_name: str = 'data_text_normalization/test_cases_normalize_with_audio.txt'):
+    """
+    Prepares tests pairs for audio based TN tests
+    """
+    test_pairs = []
+    with open(os.path.dirname(os.path.abspath(__file__)) + os.path.sep + file_name, 'r') as f:
+        written = None
+        normalized_options = []
+        for line in f:
+            if line.startswith('~'):
+                if written:
+                    test_pairs.append((written, normalized_options))
+                    normalized_options = []
+                written = line.strip().replace('~', '')
+            else:
+                normalized_options.append(line.strip())
+    test_pairs.append((written, normalized_options))
+    return test_pairs