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Mockito Cookbook by Marcin Grzejszczak

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Injecting test doubles instead of beans using Spring's XML configuration

In the following recipe, we will replace an existing bean with a test double using Spring's XML configuration.

Getting ready

Let's assume that our system under test is the tax transferring system for a given person, as shown in the following code:

public class TaxTransferer {

    private final TaxService taxService;

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

    public boolean transferTaxFor(Person person) {
        if (person == null) {
            return false;
        }
        taxService.transferTaxFor(person);
        return true;
    }

}

As shown in the previous example, TaxService is a class that will perform a web service call. For readability purposes, we are simulating that we have such ...

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