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  #
  #  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
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  """Unit tests for metadata_types module."""
  
  from zenml.metadata.metadata_types import (
      MetadataTypeEnum,
      get_metadata_type,
      validate_metadata,
  )
  
  
  class TestValidateMetadata:
      """Tests for validate_metadata function."""
  
      def test_validate_metadata_with_set(self):
          """Test that metadata with sets is validated without errors."""
          metadata = {"my_set": {1, 2, 3}, "my_string": "hello"}
          validated = validate_metadata(metadata)
          # Both entries should be kept
          assert "my_set" in validated
          assert "my_string" in validated
          assert validated["my_set"] == {1, 2, 3}
          assert validated["my_string"] == "hello"
  
      def test_validate_metadata_with_tuple(self):
          """Test that metadata with tuples is validated without errors."""
          metadata = {"my_tuple": (1, 2, 3)}
          validated = validate_metadata(metadata)
          assert "my_tuple" in validated
          assert validated["my_tuple"] == (1, 2, 3)
  
      def test_validate_metadata_with_nested_sets(self):
          """Test that metadata with nested sets is validated without errors."""
          metadata = {
              "nested": {
                  "my_set": {1, 2, 3},
                  "my_tuple": (4, 5, 6),
              }
          }
          validated = validate_metadata(metadata)
          assert "nested" in validated
          assert validated["nested"]["my_set"] == {1, 2, 3}
          assert validated["nested"]["my_tuple"] == (4, 5, 6)
  
  
  class TestGetMetadataType:
      """Tests for get_metadata_type function."""
  
      def test_get_metadata_type_for_set(self):
          """Test that the correct type enum is returned for sets."""
          test_set = {1, 2, 3}
          result = get_metadata_type(test_set)
          assert result == MetadataTypeEnum.SET
  
      def test_get_metadata_type_for_tuple(self):
          """Test that the correct type enum is returned for tuples."""
          test_tuple = (1, 2, 3)
          result = get_metadata_type(test_tuple)
          assert result == MetadataTypeEnum.TUPLE
  