Creating and testing a Test Codeunit in AL for Dynamics 365 Business Central involves several steps. Test Codeunits are used to automate the testing of your application to ensure it functions correctly.
Here’s a detailed guide on how to create and test a Test Codeunit:
Step 1
Test codeunit : Test codeunits are codeunitsthat have subtype property set to “Test”. This test methods are created inside the Test codeunit.
Step 2
We create the “Test codeunit”, as normal codeunit but define as subtype to Test and the method which we want to test using “Test tool” as created by adding [test] in before the method.
Step 3
To test the Test codeunit, we need to type, “Test tool” in “Tell me” option, then following window will be opened.
Step 4
To get the list of codeunits , select the “Get Test codeunits” action, it will display the following window.
Step 5
If we select, “All test codeunits” it will display all the test codeunits present or if we select the “ Select Test codeunits” it display a list of the “Test codeunits” as below.
Step 6
In the above list, we have created 50100, 50102 and 50113 test codeunits.
Step 7
Select the codeunit which we want to run.
Step 8
After selecting the codeunit. Then following window will be displayed.
Step 9
Select “run “ action to run the test codeunit. If the result, is success then displays a success result or else failure result along with error in “First error” column.
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