Hands-On Design Patterns and Best Practices with Julia

Applying multiple stubs to the same function

In our example, the open_account function calls several dependent functions. It performs background checks for a customer, creates the account, and notifies downstream systems. Practically speaking, we may want to create stubs for all of them. How do we apply multiple stubs? The Mocking package supports this feature.

As usual, we would need to decorate the open_account function with a @mock macro for every function that we want to apply to our stubs. The following code shows this:

function open_account(first_name, last_name, email)    @mock(check_background(first_name, last_name)) || return :failure    account_number = @mock(create_account(first_name, last_name, email)) @mock(notify_downstream(account_number)) ...