iporsut

public class AcceptingAuthorizerFake implements Authorizer {
        public Boolean authorize(String username, String password) {
                return username.equals("Bob");
        }
}

iporsut

type AcceptingAuthorizerVerificationMock struct {
        AuthorizeWasCalled bool
}

func (mock *AcceptingAuthorizerVerificationMock) Authorize(username, password string) (bool, error) {
        mock.AuthorizeWasCalled = true
        return true, nil
}

func (mock *AcceptingAuthorizerVerificationMock) Verify() bool {

iporsut

public class AcceptingAuthorizerVerificationMock implements Authorizer {
        public boolean authorizeWasCalled = false;
        
        public Boolean authorize(String username, String password) {
                authorizeWasCalled = true;
                return true;
        }
        
        public boolean verify() {
                return authorizedWasCalled;

iporsut

type AcceptingAuthorizerSpy struct {
        AuthorizeWasCalled bool
}

func (spy *AcceptingAuthorizerSpy) Authorize(username, password string) (bool, error) {
        spy.AuthorizeWasCalled = true
        return true, nil
}

iporsut

public class AcceptingAuthorizerSpy implements Authorizer {
        public boolean authorizeWasCalled = false;
        
        public Boolean authorize(String username, String password) {
                authorizeWasCalled = true;
                return true;
        }
}

iporsut

type AcceptingAuthorizerStub struct {
}

func (stub *AcceptingAuthorizerStub) Authorize(username, password string) (bool, error) {
        return true, nil
}

iporsut

public class AcceptingAuthorizerStub implements Authorizer {
        public Boolean authorize(String username, String password) {
                return true;
        }
}

iporsut

type System struct {
        Authorizer authorizer.Authorizer
}

func (system *System) LoginCount() int {
        return 0
}

func TestNewlyCreatedSystemHasNoLoggedInUsers(t *testing.T) {
        system := &System { &authorizer.DummyAuthorizer{} }

iporsut

public class System {
        public System(Authorizer authorizer) {
                this.authorizer = authorizer;
        }

        public int loginCount() {
                //returns number of logged in users.
        }
}

iporsut

type DummyAuthorizer struct {
}

func (dummy *DummyAuthorizer) Authorize(username, password string) (bool, error) {
        return false, errors.New("Don't used Dummy")
}