ABAP_to_the_Future

Automating the Test Process 3.4
ld_class_type_to_create " Exact Class to Create
it_signature_values = lt_signature_values " Parameter Values
CHANGING co_object = co_object ). " Created Object
ENDMETHOD."Create Via Injection
Listing 3.25 CREATE_BY_INJECTION Method
If you want to drill into this even more, you can download this code at www.sappress.com/3680
and run it in debug mode to see what’s happening.
In summary, dependency injection provide s a way to set up complicated classes
while using a lot less code, which will en able you to create test classes with less
effort.
Error Handling
There is virtually no error handling in the code just discussed (except for throwing fatal
exceptions when unexpected things occur). This could be a lot more elegant—but it is
the basic principle of automating dependency injection, not elegance, that is currently
our focus.
3.4.2 Automating Mock Object Creation via mockA
Unit testing frameworks have been around for quite some time in other languages,
such as Java and C++. ABAP has joined the club rather late in the day. One
advantage of this is that ABAP develope rs can look at problems other languages
encountered—and solved—some years ago, and if they find the same problem,
then they can implement the same sort of solution without having to reinvent the
wheel. Mock objects are a great example of this: Many different mock object
frameworks for Java were born to take a lot of the pain out of the process. An SAP
developer named Uwe Kunath started an open-source project to achieve the same
solution in ABAP and called his proj ect the mockA framework. mockA can be
downloaded at https://github.com/uweku/mockA.
ABAP Open-Source Projects
There are several times where this book will refer to open-source ABAP projects that
started life on the SAP Code Exchange section of the SAP Community Network but
nowadays live on sites like GitHub. The obvious benefit of these projects is that they are
free. Some development departments have rules against installing such things, but I feel
they are just cutting off their nose to spite their face.
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