old_contents: from pypinfo import db
  
  CREDS_FILE = '/path/to/creds_file.json'
  
  
  def test_get_credentials(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Assert
      assert db.get_credentials() is None
  
  
  def test_set_credentials(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
  
  
  def test_set_credentials_twice(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
      db.set_credentials(CREDS_FILE)
  
  
  def test_round_trip(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
  
      # Assert
      assert db.get_credentials() == CREDS_FILE
  
  
  def test_get_credentials_table(tmp_path):
      db.DB_FILE = str(tmp_path / 'db.json')
      with db.get_credentials_table() as table:
          assert not table._storage._storage._handle.closed
          with db.get_credentials_table(table) as table2:
              assert table2 is table
          assert not table._storage._storage._handle.closed
      assert table._storage._storage._handle.closed
  
new_contents: from pypinfo import db
  
  CREDS_FILE = '/path/to/creds_file.json'
  
  
  def test_get_credentials(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Assert
      assert db.get_credentials() is None
  
  
  def test_set_credentials(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
  
  
  def test_set_credentials_twice(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
      db.set_credentials(CREDS_FILE)
  
  
  def test_round_trip(tmp_path):
      # Arrange
      db.DB_FILE = str(tmp_path / 'db.json')  # Mock
  
      # Act
      db.set_credentials(CREDS_FILE)
  
      # Assert
      assert db.get_credentials() == CREDS_FILE
  
  
  def test_get_credentials_table(tmp_path):
      db.DB_FILE = str(tmp_path / 'db.json')
      with db.get_credentials_table() as table:
          assert not table._storage._handle.closed
          with db.get_credentials_table(table) as table2:
              assert table2 is table
          assert not table._storage._handle.closed
      assert table._storage._handle.closed
  
subject: Fix tests for updated TinyDB/Tinyrecord