class_docstr: Test Metadata operations using a SQLite-backed store.
code: def testInvalidConnection(self):
      # read only connection to a unknown file
      invalid_config = metadata_store_pb2.ConnectionConfig()
      invalid_config.sqlite.filename_uri = "unknown_file"
      invalid_config.sqlite.connection_mode = 1
      # test the runtime error contains detailed information
      with self.assertRaisesRegex(
          RuntimeError, "unable to open database file"
      ):
          with metadata.Metadata(connection_config=invalid_config) as m:
              m.store()
  
imports: import tensorflow
  from tfx.orchestration import metadata
  from tfx.orchestration import metadata_test_utils
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 2 for calling the SqliteMetadataTest obj's underlying member method code with example usage: obj.testInvalidConnection() without return types