Question

Let’s face it, writing bean property tests is possibly the worst use of time. But they need to be done.

For example. If testing a String property for propName a call such as the following:

testProperty(target, "propName", String.class);
testProperty(target, "propName", String.class, "expected initial");

Would validate that:

• get and set methods exist.
• If using expected value a test to get calls assertEquals for the given value.
• (get,is)/set methods behave as expected.

I could go an start writing these implementations, but I want to know if there is something available to facilitate this. Other optional attributes could be used to validate that null is allowed or use JSR-303 bean validation to validate the field.

Answer 1

There are quite a few existing code libraries/snippets that make this easier. In doing a quick search I found a few that have potential:

• https://github.com/codebox/javabean-tester
• http://code.google.com/p/junit-javabean-runner/
• http://javabeantester.sourceforge.net/

I have seen someone take the first example I listed (nice and simple because it’s just a single class) and modify it to better fit their needs.