Hands-On Design Patterns and Best Practices with Julia

Implementing stubs with the Mocking package

A good alternative to implementing stubs is the Mocking package. This package is fairly straightforward to use. We will quickly go over how to use Mocking to apply the same stubs that we applied earlier. 

In order to follow this exercise, you can copy the code from the original CreditApproval module to a new module called CreditApprovalMockingStub. Now, follow these steps:

1. First, make sure that the Mocking package is installed. Then, modify the function under test, as follows:

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