之后，我们创建一个junit测试代码MoneyTest.java，来测试Money.java和MoneyBag.java类，这里我也把它放在src目录下；如果企业应用，你就要把目录分析的详细些，例如src子目录下放所有的java源代码，test子目录下放所有的junit测试代码：
import junit.framework.*;
public class MoneyTest extends TestCase {
private Money f12CHF;
private Money f14CHF;
private Money f7USD;
private Money f21USD;
private IMoney fMB1;
private IMoney fMB2;
public static void main(String args[]) {
junit.textui.TestRunner.run(MoneyTest.class);
}
protected void setUp() {
f12CHF= new Money(12, "CHF");
f14CHF= new Money(14, "CHF");
f7USD= new Money( 7, "USD");
f21USD= new Money(21, "USD");
fMB1= MoneyBag.create(f12CHF, f7USD);
fMB2= MoneyBag.create(f14CHF, f21USD);
}
public void testBagMultiply() {
// {[12 CHF][7 USD]} *2 == {[24 CHF][14 USD]}
IMoney expected= MoneyBag.create(new Money(24, "CHF"), new Money(14, "USD"));
assertEquals(expected, fMB1.multiply(2));
assertEquals(fMB1, fMB1.multiply(1));
assertTrue(fMB1.multiply(0).isZero());
}
public void testBagNegate() {
// {[12 CHF][7 USD]} negate == {[-12 CHF][-7 USD]}
IMoney expected= MoneyBag.create(new Money(-12, "CHF"), new Money(-7, "USD"));
assertEquals(expected, fMB1.negate());
}
public void testBagSimpleAdd() {
// {[12 CHF][7 USD]} + [14 CHF] == {[26 CHF][7 USD]}
IMoney expected= MoneyBag.create(new Money(26, "CHF"), new Money(7, "USD"));
assertEquals(expected, fMB1.add(f14CHF));
}
public void testBagSubtract() {
// {[12 CHF][7 USD]} - {[14 CHF][21 USD] == {[-2 CHF][-14 USD]}
IMoney expected= MoneyBag.create(new Money(-2, "CHF"), new Money(-14, "USD"));
assertEquals(expected, fMB1.subtract(fMB2));
}
public void testBagSumAdd() {
// {[12 CHF][7 USD]} + {[14 CHF][21 USD]} == {[26 CHF][28 USD]}
IMoney expected= MoneyBag.create(new Money(26, "CHF"), new Money(28, "USD"));
assertEquals(expected, fMB1.add(fMB2));
}
public void testIsZero() {
assertTrue(fMB1.subtract(fMB1).isZero());
assertTrue(MoneyBag.create(new Money (0, "CHF"), new Money (0, "USD")).isZero());
}
public void testMixedSimpleAdd() {
// [12 CHF] + [7 USD] == {[12 CHF][7 USD]}
IMoney expected= MoneyBag.create(f12CHF, f7USD);
assertEquals(expected, f12CHF.add(f7USD));
}
public void testBagNotEquals() {
IMoney bag= MoneyBag.create(f12CHF, f7USD);
assertFalse(bag.equals(new Money(12, "DEM").add(f7USD)));
}
public void testMoneyBagEquals() {
assertTrue(!fMB1.equals(null));
assertEquals(fMB1, fMB1);
IMoney equal= MoneyBag.create(new Money(12, "CHF"), new Money(7, "USD"));
assertTrue(fMB1.equals(equal));
assertTrue(!fMB1.equals(f12CHF));
assertTrue(!f12CHF.equals(fMB1));
assertTrue(!fMB1.equals(fMB2));
}
public void testMoneyBagHash() {
IMoney equal= MoneyBag.create(new Money(12, "CHF"), new Money(7, "USD"));
assertEquals(fMB1.hashCode(), equal.hashCode());
}
public void testMoneyEquals() {
assertTrue(!f12CHF.equals(null));
Money equalMoney= new Money(12, "CHF");
assertEquals(f12CHF, f12CHF);
assertEquals(f12CHF, equalMoney);
assertEquals(f12CHF.hashCode(), equalMoney.hashCode());
assertTrue(!f12CHF.equals(f14CHF));
}
public void testMoneyHash() {
assertTrue(!f12CHF.equals(null));
Money equal= new Money(12, "CHF");
assertEquals(f12CHF.hashCode(), equal.hashCode());
}
public void testSimplify() {
IMoney money= MoneyBag.create(new Money(26, "CHF"), new Money(28, "CHF"));
assertEquals(new Money(54, "CHF"), money);
}
public void testNormalize2() {
// {[12 CHF][7 USD]} - [12 CHF] == [7 USD]
Money expected= new Money(7, "USD");
assertEquals(expected, fMB1.subtract(f12CHF));
}
public void testNormalize3() {
// {[12 CHF][7 USD]} - {[12 CHF][3 USD]} == [4 USD]
IMoney ms1= MoneyBag.create(new Money(12, "CHF"), new Money(3, "USD"));
Money expected= new Money(4, "USD");
assertEquals(expected, fMB1.subtract(ms1));
}
public void testNormalize4() {
// [12 CHF] - {[12 CHF][3 USD]} == [-3 USD]
IMoney ms1= MoneyBag.create(new Money(12, "CHF"), new Money(3, "USD"));
Money expected= new Money(-3, "USD");
assertEquals(expected, f12CHF.subtract(ms1));
}
public void testPrint() {
assertEquals("[12 CHF]", f12CHF.toString());
}
public void testSimpleAdd() {
// [12 CHF] + [14 CHF] == [26 CHF]
Money expected= new Money(26, "CHF");
assertEquals(expected, f12CHF.add(f14CHF));
}
public void testSimpleBagAdd() {
// [14 CHF] + {[12 CHF][7 USD]} == {[26 CHF][7 USD]}
IMoney expected= MoneyBag.create(new Money(26, "CHF"), new Money(7, "USD"));
assertEquals(expected, f14CHF.add(fMB1));
}
public void testSimpleMultiply() {
// [14 CHF] *2 == [28 CHF]
Money expected= new Money(28, "CHF");
assertEquals(expected, f14CHF.multiply(2));
}
public void testSimpleNegate() {
// [14 CHF] negate == [-14 CHF]
Money expected= new Money(-14, "CHF");
assertEquals(expected, f14CHF.negate());
}
public void testSimpleSubtract() {
// [14 CHF] - [12 CHF] == [2 CHF]
Money expected= new Money(2, "CHF");
assertEquals(expected, f14CHF.subtract(f12CHF));
}
}
二、编写ant文件自动运行java单元测试
之后，我们在sinky目录下，创建一个build.xml文件，完成它的编译和测试任务，这里我为build.xml文件加了注释，供大家参考：
<!—build的项目名称叫money_demo，默认执行的任务是compile，根目录指当前目录，也就是sincky文件夹 -->
<project name="money_demo" default=" compile " basedir=".">
<description>
moneytest build file
</description>
<!—定义一个属性src，指向src目录-->
<property name="src" location="src"/>
<!—定义一个属性build，指向build目录，这个目录放置所有的编译后class文件，该目录目前没有创建-->
<property name="build" location="build"/>
<!—定义一个build的classpath，里边放置后边任务里需要的依赖库和依赖路径-->
<path id="build.classpath">
<pathelement path="${ant.home}/lib/junit.jar"/>
<pathelement path="${build}"/>
</path>
<!--构建编译任务，先创建build文件夹，之后将srcdir里的java文件编译到build目录里-->
<target name="compile" >
<mkdir dir="${build}"/>
<javac srcdir="${src}" destdir="${build}"/>
</target>
<!--运行junit测试，运行的是MoneyTest，该运行依赖于build.classpath定义的路径 -->
<target name="test">
<java classname="MoneyTest" fork="yes">
<classpath refid="build.classpath"/>
</java>
</target>
<!--删除build文件夹的任务-->
<target name="clean">
<delete dir="${build}"/>
</target>
</project>
之后，我们开始运行build文件，开始编译任务：打开cmd命令行，进入sincky文件夹下，执行ant命令，会看见类似下列内容的效果：
C:cloversincky>ant
Buildfile: build.xml
compile:
[mkdir] Created dir: C:cloversinckybuild
[javac] Compiling 4 source files to C:cloversinckybuild
BUILD SUCCESSFUL
Total time: 4 seconds
现在你会在sincky目录下发现多了一个build目录，进入build目录，看见里边编译好的4个class文件，恭喜你，这个任务胜利完成！
下面我们来运行单元测试任务：
C:cloversincky>ant test
Buildfile: build.xml
test:
[java] ......................
[java] Time: 0.016
[java] OK (22 tests)
BUILD SUCCESSFUL
Total time: 1 second
可以通过结果看出，22个测试用例全部通过；junit里边测试通过是.表示，测试失败是.F表示。关于ant的命令帮助，你可以输入ant –h查看。
