Spring MVC step-by-step 源码

package springapp.service; import java.util.ArrayList; import java.util.List; import junit.framework.TestCase; import springapp.domain.Product; import springapp.repository.InMemoryProductDao; import springapp.repository.ProductDao; public class SimpleProductManagerTests extends TestCase { private SimpleProductManager productManager; private List<Product> products; private static int PRODUCT_COUNT = 2; private static Double CHAIR_PRICE = new Double(20.50); private static String CHAIR_DESCRIPTION = "Chair"; private static String TABLE_DESCRIPTION = "Table"; private static Double TABLE_PRICE = new Double(150.10); private static int POSITIVE_PRICE_INCREASE = 10; protected void setUp() throws Exception { productManager = new SimpleProductManager(); products = new ArrayList<Product>(); // stub up a list of products Product product = new Product(); product.setDescription("Chair"); product.setPrice(CHAIR_PRICE); products.add(product); product = new Product(); product.setDescription("Table"); product.setPrice(TABLE_PRICE); products.add(product); ProductDao productDao = new InMemoryProductDao(products); productManager.setProductDao(productDao); //productManager.setProducts(products); } public void testGetProductsWithNoProducts() { productManager = new SimpleProductManager(); productManager.setProductDao(new InMemoryProductDao(null)); assertNull(productManager.getProducts()); } public void testGetProducts() { List<Product> products = productManager.getProducts(); assertNotNull(products); assertEquals(PRODUCT_COUNT, productManager.getProducts().size()); Product product = products.get(0); assertEquals(CHAIR_DESCRIPTION, product.getDescription()); assertEquals(CHAIR_PRICE, product.getPrice()); product = products.get(1); assertEquals(TABLE_DESCRIPTION, product.getDescription()); assertEquals(TABLE_PRICE, product.getPrice()); } public void testIncreasePriceWithNullListOfProducts() { try { productManager = new SimpleProductManager(); productManager.setProductDao(new InMemoryProductDao(null)); productManager.increasePrice(POSITIVE_PRICE_INCREASE); } catch (NullPointerException ex) { fail("Products list is null."); } } public void testIncreasePriceWithEmptyListOfProducts() { try { productManager = new SimpleProductManager(); productManager.setProductDao(new InMemoryProductDao(new ArrayList<Product>())); //productManager.setProducts(new ArrayList<Product>()); productManager.increasePrice(POSITIVE_PRICE_INCREASE); } catch (Exception ex) { fail("Products list is empty."); } } public void testIncreasePriceWithPositivePercentage() { productManager.increasePrice(POSITIVE_PRICE_INCREASE); double expectedChairPriceWithIncrease = 22.55; double expectedTablePriceWithIncrease = 165.11; List<Product> products = productManager.getProducts(); Product product = products.get(0); assertEquals(expectedChairPriceWithIncrease, product.getPrice()); product = products.get(1); assertEquals(expectedTablePriceWithIncrease, product.getPrice()); } }