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94 lines
3.4 KiB
Python
94 lines
3.4 KiB
Python
# Copyright 2025 Collate
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# Licensed under the Collate Community License, Version 1.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# https://github.com/open-metadata/OpenMetadata/blob/main/ingestion/LICENSE
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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MF4 reader tests
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"""
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from unittest import TestCase
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from unittest.mock import MagicMock, patch
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from metadata.readers.dataframe.mf4 import MF4DataFrameReader
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from metadata.readers.dataframe.models import DatalakeColumnWrapper
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class TestMF4DataFrameReader(TestCase):
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"""
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Test MF4DataFrameReader functionality
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"""
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@patch("metadata.readers.dataframe.base.get_reader")
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def setUp(self, mock_get_reader):
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"""Set up test fixtures"""
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# MF4DataFrameReader requires config_source and client
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mock_config_source = MagicMock()
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mock_client = MagicMock()
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# Mock the reader that get_reader returns
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mock_reader = MagicMock()
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mock_get_reader.return_value = mock_reader
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self.reader = MF4DataFrameReader(
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config_source=mock_config_source, client=mock_client
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)
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self.mock_reader = mock_reader
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def test_extract_schema_from_header_with_common_properties(self):
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"""
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Test extracting schema from MF4 header with _common_properties
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"""
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# Mock MF4 bytes
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mock_mf4_bytes = b"mock_mf4_content"
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# Expected common properties
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expected_common_props = {
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"measurement_id": "TEST_001",
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"vehicle_id": "VEH_123",
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"test_date": "2025-01-01",
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"sample_rate": 1000.0,
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"channels_count": 10,
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"duration": 3600.0,
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}
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# Create mock MDF object with header
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with patch("asammdf.MDF") as mock_mdf_class:
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mock_mdf = MagicMock()
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mock_header = MagicMock()
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mock_header._common_properties = expected_common_props
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mock_mdf.header = mock_header
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mock_mdf_class.return_value = mock_mdf
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# Call the method
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result = MF4DataFrameReader.extract_schema_from_header(mock_mf4_bytes)
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# Validate result
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self.assertIsInstance(result, DatalakeColumnWrapper)
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self.assertIsNotNone(result.dataframes)
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self.assertEqual(result.raw_data, expected_common_props)
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def test_extract_schema_from_header_without_common_properties(self):
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"""
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Test extracting schema when no _common_properties exist
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"""
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mock_mf4_bytes = b"mock_mf4_content"
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with patch("asammdf.MDF") as mock_mdf_class:
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mock_mdf = MagicMock()
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mock_header = MagicMock()
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# No _common_properties attribute
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del mock_header._common_properties
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mock_mdf.header = mock_header
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mock_mdf_class.return_value = mock_mdf
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# Call the method
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result = MF4DataFrameReader.extract_schema_from_header(mock_mf4_bytes)
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# Should return None when no properties found
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self.assertIsNone(result)
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