Design Pattern in Java 源代码

package com.oozinoz.testing; /* * Copyright (c) 2001, 2005. Steven J. Metsker. * * Steve Metsker makes no representations or warranties about * the fitness of this software for any particular purpose, * including the implied warranty of merchantability. * * Please use this software as you wish with the sole * restriction that you may not claim that you wrote it. */ import java.text.ParseException; import java.util.Date; import junit.framework.TestCase; import com.oozinoz.reservation.BuilderException; import com.oozinoz.reservation.ForgivingBuilder; import com.oozinoz.reservation.Reservation; import com.oozinoz.reservation.ReservationBuilder; import com.oozinoz.reservation.ReservationParser; import com.oozinoz.utility.Dollars; /** * Test that a forgiving builder builds correctly. */ public class ForgivingBuilderTest extends TestCase { Date nextNov5; public void setUp() { // Pick a date definitely in the past: 11-5-2000 nextNov5 = ReservationBuilder.futurize(new Date(2000 - 1900, 11 - 1, 5)); } /** * Test that we disallow a too low figure for dollars/head. */ public void testLowDollars() throws ParseException { String s = "Date, November 5, Headcount, 250, " + "City, Springfield, DollarsPerHead, 1.95, " + "HasSite, false"; ReservationBuilder b = new ForgivingBuilder(); new ReservationParser(b).parse(s); try { Reservation r = b.build();// should throw an exception fail("Should throw a BuilderException"); } catch (BuilderException expected) { } } /** * Test that we disallow a too low figure for headcount. */ public void testLowHeadCount() throws ParseException { String s = "Date, November 5, Headcount, 2, " + "City, Springfield, DollarsPerHead, 9.95, " + "HasSite, false"; ReservationBuilder b = new ForgivingBuilder(); new ReservationParser(b).parse(s); try { Reservation r = b.build();// should throw an exception fail("Should throw a BuilderException"); } catch (BuilderException expected) { } } /** * Test that we disallow a missing city. */ public void testNoCity() throws ParseException { String s = "Date, November 5, Headcount, 250, " + "DollarsPerHead, 9.95, " + "HasSite, false"; ReservationBuilder b = new ForgivingBuilder(); new ReservationParser(b).parse(s); try { Reservation r = b.build();// should throw an exception fail("Should throw a BuilderException"); } catch (BuilderException expected) { } } /** * Test that we disallow a missing date. */ public void testNoDate() throws ParseException { String s = "Headcount, 250, " + "City, Springfield, DollarsPerHead, 9.95, " + "HasSite, false"; ReservationBuilder b = new ForgivingBuilder(); new ReservationParser(b).parse(s); try { Reservation r = b.build();// should throw an exception fail("Should throw a BuilderException"); } catch (BuilderException expected) { } } /** * Test that if there is a headcount but no dollars/head value, * set the dollars/head value to be high enough to generate * the minimum take. */ public void testNoDollar() throws BuilderException, ParseException { String s = "Date, November 5, Headcount, 250, City, Springfield, " + " HasSite, false"; ForgivingBuilder b = new ForgivingBuilder(); ReservationParser p = new ReservationParser(b); p.parse(s); Reservation r = b.build(); assertEquals(nextNov5, r.getDate()); assertEquals(250, r.getHeadcount()); Dollars price = r.getDollarsPerHead().times(r.getHeadcount()); assertFalse(price.isLessThan(ReservationBuilder.MINTOTAL)); assertEquals("Springfield", r.getCity()); assertFalse(r.hasSite()); } /** * Test that if there is no headcount but there is a dollars/head value, * set the headcount to be at least the minimum attendance and at least * enough to generate enough money for the event. */ public void testNoHeadcount() throws BuilderException, ParseException { String s = "Date, November 5, City, Springfield, " + "DollarsPerHead, 9.95, HasSite, false"; ForgivingBuilder b = new ForgivingBuilder(); ReservationParser p = new ReservationParser(b); p.parse(s); Reservation r = b.build(); assertEquals(nextNov5, r.getDate()); assertTrue(r.getHeadcount() >= ReservationBuilder.MINHEAD); Dollars price = r.getDollarsPerHead().times(r.getHeadcount()); assertFalse(price.isLessThan(ReservationBuilder.MINTOTAL)); assertEquals("Springfield", r.getCity()); assertEquals(new Dollars(9.95), r.getDollarsPerHead()); assertFalse(r.hasSite()); } /** * Test that if the reservation request specifies no headcount and no * dollars/head, set the headcount to the minimum and set dollars/head * to the minimum total divided by the headcount. */ public void testNoHeadcountNoDollar() throws BuilderException, ParseException { String s = "Date, November 5, City, Springfield, " + " HasSite, false"; ForgivingBuilder b = new ForgivingBuilder(); ReservationParser p = new ReservationParser(b); p.parse(s); Reservation r = b.build(); assertEquals(nextNov5, r.getDate()); assertEquals(ReservationBuilder.MINHEAD, r.getHeadcount()); assertEquals("Springfield", r.getCity()); assertEquals( ReservationBuilder.MINTOTAL.dividedBy(r.getHeadcount()), r.getDollarsPerHead()); assertFalse(r.hasSite()); } /** * Test a normal reservation. */ public void testNormal() throws BuilderException, ParseException { String s = "Date, November 5, Headcount, 250, City, Springfield, " + "DollarsPerHead, 9.95, HasSite, false"; ForgivingBuilder b = new ForgivingBuilder(); ReservationParser p = new ReservationParser(b); p.parse(s); Reservation r = b.build(); assertEquals(nextNov5, r.getDate()); assertEquals(250, r.getHeadcount()); assertEquals("Springfield", r.getCity()); assertEquals(new Dollars(9.95), r.getDollarsPerHead()); assertFalse(r.hasSite()); } }