Mockito BDD style

BddTest.java

package logic;

import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;

import java.util.List;

import static org.hamcrest.CoreMatchers.is;
import static org.junit.matchers.JUnitMatchers.hasItem;
import static org.mockito.BDDMockito.given;
import static org.mockito.BDDMockito.mock;

public class BddTest extends Assert {

  Seller seller;
  Shop shop;

  @Before
  public void setUp() throws Exception {
    seller = mock(Seller.class);
    shop = new Shop(seller);
  }

  @Test
  public void shouldBuyBread() throws Exception {
    //given
    given(seller.askForBread()).willReturn(new Bread());

    //when
    List<Object> goods = shop.buyBread();

    //then
    assertThat(goods, hasItem(is(Bread.class)));
  }

  private static class Seller {
    public Bread askForBread() {
      return null;
    }
  }

  private static class Shop {

    public Shop(Seller seller) {
    }

    public List<Object> buyBread() {
      return null;
    }
  }

  private static class Bread {

  }
}