The test framework of logi.CAD 3 allows you to create and execute automated →unit tests unit tests for →POUs in logi.CAD 3. The test framework is not provided in all variants of logi.CAD 3.

Advantages of the test framework

The test framework controls the execution of unit tests and compares the actual test outcomes with the predicted test outcomes. This means:

If you create a POU, you only have to create and execute the unit tests to confirm that the POU is working as expected.
If you modify the logic of this POU at a later date, it is sufficient to execute the unit tests to ensure that the modified POU is still working as expected.

Modified interface

If you modify the interface of the POU (hence: there are new, changed or deleted inputs or outputs), it is necessary to adapt the existing unit tests correspondingly.

Condition for using the test framework

You have already installed the required license.

On using the test framework

This section informs about the necessary procedure.

Your question...	Start with this article...
How do I create/execute unit tests for a POU?	Testing a POU
Some dos and don'ts	The dos and don'ts when testing
How do I modify the Excel test suite?	Structure of the Excel test suite, modifying the worksheets
Where are the test data being displayed?	Changing the view onto the test data within the test log viewer Test coverage displayed within the editor
Which restrictions are there?	Restrictions when using the test frameworks
Are there examples for tests?	Examples for tests