Configuring responses

When allowing or expecting messages, the default response is to return nil. Several methods are provided to configure how the test double responds to the message.

• and_return
• and_raise
• and_invoke
• and_throw
• and_yield
• and_call_original
• and_wrap_original

In addition, you can provide a block implementation to respond in any manner you wish.

Note: for simplicity, the examples here use allow rather than expect, but these APIs apply equally to both cases.

Topics

• Returning a value
• Raising an error
• Throwing
• Yielding
• Calling the original implementation
• Wrapping the original implementation
• Block implementation
• Mixed responses