projjpn/projjpn/src/test/java/de/hs_fulda/ciip/projjpn/ItemTest.java

package de.hs_fulda.ciip.projjpn;

import junit.framework.TestCase;

public class ItemTest extends TestCase {
	/**
	 * No Items are in Stock.
	 * Check the inStock() Method.
	 */
	public void test_ItemNotInStock() {
		// Given
		Item item = new Item();
		
		// When
		boolean notInStock = item.inStock();
		
		// Then
		assertFalse(notInStock);
	}
	
	/**
	 * Stock is not Empty.
	 * Check the inStock() Method.
	 */
	public void test_ItemInStock() {
		// Given
		Item item = new Item();
		item.updateAvailability(1);
		// When
		boolean inStock = item.inStock();
		
		// Then
		assertTrue(inStock);
	}
	
	/**
	 * One and the same type of an item costs the same.
	 * check getCurrentPrice()
	 */
	public void test_priceOfMultipleIdenticalItems() {
		// Given
		Item item = new Item();
		int quantity = 3;
		float price = 5;
		item.updateAvailability(quantity);
		item.updatePrice(price);
		
		// When 
		float expectedPrice = quantity * price;
		
		// Then
		float actualPrice = 0;
		for(int i = 0; i < quantity; i++) {
			actualPrice += item.getCurrentPrice();
		}
		
		assertEquals(expectedPrice, actualPrice);
	}
	
	/**
	 * Check if creating a complete item with all attributes works as intended.
	 */
	public void test_buildCompleteItem() {
		// Given
		String expectedTitel = "Logitec Maus";
		String expectedDescription = "Gaming Maus fuer Fortgeschrittene.";
		int expectedQuantity = 10;
		float expectedPrice = 69.99f;
		
		// When
		Item itemNotNull = new Item(expectedTitel, expectedDescription, expectedQuantity, expectedPrice);
		
		// Then
		assertNotNull(itemNotNull);
		
		// When
		boolean validDescription = itemNotNull.getDescription().equals(expectedDescription);
		assertTrue(validDescription);
		
		boolean validTitle = itemNotNull.getTitel().equals(expectedTitel);
		assertTrue(validTitle);
		
		boolean validQuantity = itemNotNull.getCurrentStock() == expectedQuantity;
		assertTrue(validQuantity);
		
		boolean validPrice = itemNotNull.getCurrentPrice() == expectedPrice;
		assertTrue(validPrice);
	}
}