How to Write Effective Unit Tests for Your Java Classes?

How to Write Unit Tests for Your Java Class

To effectively evaluate the functionality of a Java class, writing unit tests is crucial. Here's how you can approach it:

For Eclipse IDE:

1. Create a new Java project and a new class with your binary sum logic.
2. Go to File > New > JUnit Test Case.
3. Initialize your test case in the setUp() method and write a test method, for instance, testAdd().
4. Assert the expected result against the actual result using Assert.assertEquals().
5. Run your test by right-clicking on the test class and selecting Run as > JUnit Test.

For IntelliJ IDEA:

1. Create a "test" directory in the root project folder and mark it as a test sources root.
2. Create a Java class (Test.java) in the appropriate package within the test directory.
3. Import necessary testing libraries, such as org.junit.jupiter.api.Assertions.
4. Write a test method with the @Test annotation, following the format: @Test public void test().
5. Use Assertions class to verify expected and actual values, e.g., Assertions.assertEquals().
6. Run your tests by right-clicking on the test and selecting Run.

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