testfilecatalogloader.java

SSD3 icarnegie FileCatalogLoader

import java.io.*;
import java.util.*;

/**
 * Tests the class <code>FileCatalogLoader</code>
 * 
 * @author iCarnegie
 * @version 1.0.0
 * @see FileCatalogLoader
 */
public class TestFileCatalogLoader {

	/* Standard output stream */
	private static PrintWriter stdOut = new PrintWriter(System.out, true);

	/* Standard error stream */
	private static PrintWriter stdErr = new PrintWriter(System.err, true);

	/**
	 * Tests methods of class {@link FileCatalogLoader}
	 * 
	 * @param args
	 *            not used.
	 * @throws IOException
	 *             if an I/O error occurs.
	 */
	public static void main(String args[]) throws IOException {

		stdOut.println("");
		stdOut.println("Testing class FileCatalogLoader...");

		TestFileCatalogLoader tester = new TestFileCatalogLoader();

		tester.testLoadCatalog();
		stdOut.println("All tests passed");
		stdOut.println("");
	}

	/**
	 * Displays a message in the standard error stream if the value specified by
	 * parameter <code>condition<code> is <code>false</code>.
	 *
	 * @param message  the error message.
	 * @param condition  the test condition.
	 * @return the value of <code>condition</code>
	 */
	public static void assertTrue(String message, boolean condition) {

		if (!condition) {
			stdErr.print("** Test failure ");
			stdErr.println(message);

			System.exit(1);
		}

	}

	/**
	 * Displays a message in the standard error stream.
	 * 
	 * @param message
	 *            the error message.
	 * @return <code>false</code>;
	 */
	public static void fail(String message) {

		stdErr.print("** Test failure ");
		stdErr.println(message);

		System.exit(1);
	}

	/**
	 * Tests the method <code>loadCatalog</code>.
	 * 
	 * @return <code>true</code> if all test passed; otherwise returns
	 *         <code>false</code>.
	 * @throws IOException
	 *             if an I/O error occurs.
	 */
	public void testLoadCatalog() throws IOException {

		CatalogLoader loader = new FileCatalogLoader();

		try {
			// Testing an empty file
			Catalog emptyCatalog = loader.loadCatalog("empty.dat");

			assertTrue("1, testing method read with an empty file",
					emptyCatalog instanceof Catalog);
			assertTrue("2, testing method read with an empty file"
					+ emptyCatalog.getNumberOfProducts() + " products loaded",
					emptyCatalog.getNumberOfProducts() == 0);

			// Testing a not empty file
			Catalog catalog = loader.loadCatalog("catalog.dat");

			assertTrue("3, testing method loadCatalog",
					catalog instanceof Catalog);
			assertTrue("4, testing method loadCatalog: "
					+ catalog.getNumberOfProducts() + " products loaded",
					catalog.getNumberOfProducts() == 26);

			// Testing product C001
			Product product = catalog.getProduct("C001");

			assertTrue("5, testing method loadCatalog" + product.toString(),
					product instanceof Coffee);

			Coffee coffeeC001 = (Coffee) product;

			assertTrue("6, testing method loadCatalog: "
					+ coffeeC001.toString(), coffeeC001.getCode()
					.equals("C001")
					&& coffeeC001.getDescription().equals(
							"Colombia, Whole, 1 lb")
					&& coffeeC001.getPrice() == 17.99
					&& coffeeC001.getOrigin().equals("Colombia")
					&& coffeeC001.getRoast().equals("Medium")
					&& coffeeC001.getFlavor().equals("Rich and Hearty")
					&& coffeeC001.getAroma().equals("Rich")
					&& coffeeC001.getAcidity().equals("Medium")
					&& coffeeC001.getBody().equals("Full"));

			// Testing product C002
			product = catalog.getProduct("C002");

			assertTrue("7, testing method loadCatalog: " + product.toString(),
					product instanceof Coffee);

			Coffee coffeeC002 = (Coffee) product;

			assertTrue("8, testing method loadCatalog: "
					+ coffeeC002.toString(), coffeeC002.getCode()
					.equals("C002")
					&& coffeeC002.getDescription().equals(
							"Colombia, Ground, 1 lb")
					&& coffeeC002.getPrice() == 18.75
					&& coffeeC002.getOrigin().equals("Colombia")
					&& coffeeC002.getRoast().equals("Medium")
					&& coffeeC002.getFlavor().equals("Rich and Hearty")
					&& coffeeC002.getAroma().equals("Rich")
					&& coffeeC002.getAcidity().equals("Medium")
					&& coffeeC002.getBody().equals("Full"));

			// Testing product A001
			product = catalog.getProduct("A001");

			assertTrue("9, testing method loadCatalog: " + product.toString(),
					product instanceof Product);

			assertTrue("10, testing method loadCatalog: " + product.toString(),
					product.getCode().equals("A001")
							&& product.getDescription().equals(
									"Almond Flavored Syrup")
							&& product.getPrice() == 9.0);

			// Testing product B002
			product = catalog.getProduct("B002");

			assertTrue("11, testing method loadCatalog: " + product.toString(),
					product instanceof CoffeeBrewer);

			CoffeeBrewer brewerB002 = (CoffeeBrewer) product;

			assertTrue("12, testing method loadCatalog: "
					+ brewerB002.toString(), brewerB002.getCode()
					.equals("B002")
					&& brewerB002.getDescription().equals(
							"Coffee Brewer, 2 Warmers")
					&& brewerB002.getPrice() == 200.0
					&& brewerB002.getModel().equals("Brewer 200")
					&& brewerB002.getWaterSupply().equals("Pourover")
					&& brewerB002.getNumberOfCups() == 12);

		} catch (Exception e) {
			fail("13, testing method loadCatalog: " + e.getMessage());
		}
	}
}