Triangle.java
/**
* this is Triangle class
* @author liujun
*/
public class Triangle
{
//定义三角形的三边
protected long lborderA = 0;
protected long lborderB = 0;
protected long lborderC = 0;
//构造函数
public Triangle(long lborderA,long lborderB,long lborderC)
{
this.lborderA = lborderA;
this.lborderB = lborderB;
this.lborderC = lborderC;
}
/**
* 判断是否是三角形
* 是返回ture;不是返回false
*/
public boolean isTriangle(Triangle triangle)
{
boolean isTrue = false;
//判断边界,大于0小于200,出界返回false
if((triangle.lborderA>0&&triangle.lborderA<200)
&&(triangle.lborderB>0&&triangle.lborderB<200)
&&(triangle.lborderC>0&&triangle.lborderC<200))
{
//判断两边之和大于第三边
if((triangle.lborderA<(triangle.lborderB+triangle.lborderC))
&&(triangle.lborderB<(triangle.lborderA+triangle.lborderC))
&&(triangle.lborderC<(triangle.lborderA+triangle.lborderB)))
isTrue = true;
}
return isTrue;
}
/**
* 判断三角形类型
* 等腰三角形返回字符串“等腰三角形”;
* 等边三角形返回字符串“等边三角形”;
* 其它三角形返回字符串“不等边三角形”;
*/
public String isType(Triangle triangle)
{
String strType = "";
// 判断是否是三角形
if(this.isTriangle(triangle))
{
//判断是否是等边三角形 if(triangle.lborderA==triangle.lborderB&&triangle.lborderB==triangle.lborderC)
strType = "等边三角形";
//判断是否是不等边三角形
else if((triangle.lborderA!=triangle.lborderB)&&
(triangle.lborderB!=triangle.lborderC)&&
(triangle.lborderA!=triangle.lborderC))
strType = "不等边三角形";
else
strType="等腰三角形";
}
return strType;
}
}
ExampleTest.java
import junit.work.*;
/**
* Some tests.
*
*/
public class ExampleTest extends TestCase {
public Triangle triangle;
//初始化
protected void setUp() {
triangle=new Triangle(10,2,9);
}
public static Test suite() {
return new TestSuite(ExampleTest.class);
}
//函数isTriangle()的测试用例
public void testIsTriangle() {
assertTrue(triangle.isTriangle(triangle));
}
//函数isType()的测试用例
public void testIsType()
{
assertEquals("这次测试",triangle.isType(triangle),"不等边三角形");
}
//执行测试
public static void main (String[] args) {
//文本方式
junit.textui.TestRunner.run(suite());
//Swingui方式
//junit.swingui.TestRunner.run(suite().getClass());
//awtui方式
//junit.awtui.TestRunner.run(suite().getClass());
}
}