NewPersonGeneratorTest.java

package com.blogspot.toomuchcoding.book.chapter7._2_CreatingCustomHamcrestMatchers;

import static com.blogspot.toomuchcoding.book.chapter7.common.PersonMatchers.*;
import static java.util.Arrays.*;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
import static org.mockito.BDDMockito.*;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;

import com.blogspot.toomuchcoding.book.chapter7.common.NewIdentityCreator;
import com.blogspot.toomuchcoding.book.chapter7.common.NewPersonGenerator;
import com.blogspot.toomuchcoding.book.chapter7.common.Person;

@SuppressWarnings("unchecked")
@RunWith(MockitoJUnitRunner.class)
public class NewPersonGeneratorTest {

    @Mock NewIdentityCreator newIdentityCreator;

    @InjectMocks NewPersonGenerator systemUnderTest;

    @Test
    public void should_return_person_with_new_identity() {
        // given
        Person person = new Person("Robert", 25, asList(new Person("John"), new Person("Maria")));
        given(newIdentityCreator.createNewName(person)).willReturn("Andrew");
        given(newIdentityCreator.createNewAge(person)).willReturn(45);
        given(newIdentityCreator.createNewSiblings(person)).willReturn(asList(new Person("Amy", 20), new Person("Alejandro Gonzales", 25)));

        // when
        Person newPerson = systemUnderTest.generateNewIdentity(person);

        // then
        assertThat(newPerson, allOf(is(not(equalTo(person))),
                                    hasNameEqualTo("Andrew"),
                                    hasAgeGreaterThan(25),
                                    containsSiblings(new Person("Amy", 20), new Person("Alejandro Gonzales", 25))));
    }
	
}