import static com.sample.springboot.BookStoreTestHelper.*;
//生成メソッドはstaticインポートで利用した方が読みやすい
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;

import org.junit.Test;

public class BookStoreTest {

  @Test
  public void testGetTotalPrice() throws Exception {
    // SetUp
    BookStore sut = new BookStore();
    Book book = CreateBookObject_Refactoring_by_MartinFowler();
      //インスタンスの生成が長くなるので別クラスの生成メソッドを呼んでいる
    sut.addToCart(book, 1);
    // Execise & Verify
    assertThat(sut.getTotalPrice(), is(4500));
  }

  @Test
  public void testGet_0() throws Exception {
    // SetUp
    BookStore sut = new BookStore();
    Book book = CreateBookObject_Refactoring_by_MartinFowler();
    sut.addToCart(book, 1);
    // Execise & Verify
    assertThat(sut.get(0), is(sameInstance(book)));
  }
}