topic How to unit test ALV based GUI components in Application Development and Automation Discussions

How to unit test ALV based GUI components

former_member512562 — Thu, 11 Jul 2019 22:04:54 GMT

Hi Community,

i want to add unit tests to my GUI components (most ALV based) but i do not have any clue how to.

Basic structure of all classes which are responsible for (ALV) GUI handling

* generate ALV (public) -> Build ALV and display
* refresh ALV (protected / event) -> refresh ALV if surrounding GUI component notifies via event
* handle_click (private) -> handle component specific events like button clicks etc.

Are there any suggestion to unit test such objects. Code to cover is mostly within private methods for component specific events.

Thx Sebastian

Re: How to unit test ALV based GUI components

RobertVit — Fri, 12 Jul 2019 07:14:08 GMT

Hi Sebastian,

for UI testing i would go for eCATT.

Re: How to unit test ALV based GUI components

former_member512562 — Fri, 12 Jul 2019 08:22:58 GMT

Hi Robert,

i do not want to test the UI. Goal is to have the code behind covered by unit tests.

Are there any other approaches?

Thx

Re: How to unit test ALV based GUI components

UweFetzer_se38 — Tue, 16 Jul 2019 13:12:01 GMT

In my opinion you only have to test the content of the table and the behaviour of the events.

test the methods, in which the content is created
extract the event methods (click) into separate methods and test only them

Re: How to unit test ALV based GUI components

former_member512562 — Wed, 17 Jul 2019 08:45:43 GMT

Hi Uwe,

that's clear but how to testdouble a necessary gui container which is required for code under test.
I didn't find a way to mock any object based on CL_GUI_CONTAINER (or inherited)

Re: How to unit test ALV based GUI components

SuhaSaha — Wed, 17 Jul 2019 09:05:42 GMT

I didn't find a way to mock any object based on CL_GUI_CONTAINER (or inherited)

Been there & tried that without any success. But then again, why do you want to mock the control framework?

I agree with se38 on this one, i would test the contents of the output table & the event handling logic (if any).

Re: How to unit test ALV based GUI components

UweFetzer_se38 — Wed, 17 Jul 2019 13:31:39 GMT

To clarify: maybe your design does not allow unit tests. All the logic should be placed in its own class which you can test. The UI just calls these tested methods.

Re: How to unit test ALV based GUI components

matt — Wed, 17 Jul 2019 14:47:42 GMT

Create an interface with all the methods that you'll be using in the CL_GUI class. Implement it with pass through calls to the actual CL_GUI class. Create a local test double implementing the interface.

Inject a reference to the local test double.