Jan 21, 2025 · I have a Java class. How can I unit test it? In my case, I have a class that calculates a binary sum. It takes two byte[] arrays, sums them, and returns a new binary array.

Jun 28, 2013 · My test case is testing the code that validates the value, not the value itself. Is there a way to use Java code inside my test class to initialize a Java class and populate the …

Aug 29, 2008 · How do I use JUnit to test a class that has internal private methods, fields or nested classes? It seems bad to change the access modifier for a method just to be able to …

Jul 22, 2010 · 7 Many unit testing frameworks allow your tests to expect exceptions as part of the test. JUnit, for example, .

Java 8 introduced the abstract class java.time.Clock which allows you to have an alternative implementation for testing. This is exactly what Jon suggested in his answer back then.

1 Let assume i am having a RestController with GET/POST/PUT/DELETE operations and i have to write unit test using spring boot.I will just share code of RestController class and respective …

Oct 27, 2020 · So you can keep your unit tests for this asychronous working class at a minimum. Anything above that (testing interaction between classes) are component tests. Also in this …

Oct 11, 2014 · During the last years I always thought that in Java, Reflection is widely used during Unit testing. Since some of the variables/methods which have to be checked are private, it is …

I'm testing my logic as I go in a TDD manner. Before each unit test, an @Before method is called to create a database singleton, after which, when the test completes, an @After method is …

In unit testing, you only need to test the object itself. If you assert on the concrete type of the abstract objects returned, you are testing over the implementation of the returned object.