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

Stubbing methods so that they call real methods


In this recipe, we will stub a method that returns a value so that it calls a real method. This way, we will construct a partial mock (to read more about partial mocking, please refer to Chapter 2, Creating Mocks).

Getting ready

For this recipe, our system under test will be MeanTaxFactorCalculator, which calls TaxFactorFetcher twice to get a tax factor for the given person and then calculates a mean value for those two results as follows:

public class MeanTaxFactorCalculator {

    private final TaxFactorFetcher taxFactorFetcher;

    public MeanTaxFactorCalculator(TaxFactorFetcher taxFactorFetcher) {
        this.taxFactorFetcher = taxFactorFetcher;
    }

    public double calculateMeanTaxFactorFor(Person person) {
        double taxFactor = taxFactorFetcher.getTaxFactorFor(person);
        double anotherTaxFactor = taxFactorFetcher.getTaxFactorFor(person);
        return (taxFactor + anotherTaxFactor) / 2;
    }

}

Unlike the previous recipes...