Book Image

Mockito Cookbook

By : Marcin Grzejszczak
Book Image

Mockito Cookbook

By: Marcin Grzejszczak

Overview of this book

Table of Contents (17 chapters)
Mockito Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Verifying the method invocation count with times()


In this recipe, we will verify whether a method on a mock was executed for exactly the given number of times.

Getting ready

For this recipe, our system under test will be TaxUpdater, which calls TaxService (let's assume that it is a web-service client) to update the mean tax factor for two people. Unfortunately, this system is old and can accept a single call at a time. For simplicity, the calculateMeanTaxFactor() method, shown in the following code, returns a fixed value but in reality, there could be some complex logic:

public class TaxUpdater {

    static final double MEAN_TAX_FACTOR = 10.5;

    private final TaxService taxService;

    public TaxUpdater(TaxService taxService) {
        this.taxService = taxService;
    }

    public void updateTaxFactorFor(Person brother, Person sister) {
        taxService.updateMeanTaxFactor(brother,calculateMeanTaxFactor());
        taxService.updateMeanTaxFactor(sister,calculateMeanTaxFactor());
...