Mockito Cookbook

Adding Mockito hints to exception messages (JUnit) (Experimental)

When a JUnit test fails, an exception is thrown and a message is presented. Sometimes, it is enough to find a reason for this mistake and to find the solution. Mockito, however, goes a step further and tries to help the developer by giving him additional hints regarding the state of the stubbed methods.

Note

Remember that this feature is experimental and the API, name, or anything related to it may change in time. What is more, the whole feature may get deleted in time!

Getting ready

For this recipe, let's assume that our system is the MeanTaxFactorCalculator class that calculates tax through TaxService, which has two methods—performAdditionalCalculation() and getCurrentTaxFactorFor(...) ...