Testing the Expected Exceptions
Explore how to verify that exceptions are correctly thrown in Java unit tests using JUnit. Understand methods such as the @Test annotation with expected exceptions and try/catch blocks. This lesson helps you ensure your code handles error conditions properly, improving test reliability and clarity.
We'll cover the following...
In addition to ensuring that the happy path through our code works, we want to verify that exceptions get thrown when expected.
Let’s examine a simple case. How do we ensure that the Account code throws an exception when a client attempts to withdraw more than the available balance?
Understanding the conditions that cause a class to throw exceptions can make life a lot easier for a client developer using the class.
JUnit supports at least three different ways of specifying that we expect ...