软件测试实验学习笔记系列3--单元测试

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软件测试实验学习笔记系列3--单元测试

发表于：2013-8-06 11:03

作者：xiajian2010 来源：51Testing软件测试网采编

　　判断三角形的java程序：

package demo2;
public class Triangle {
private double a,b,c;
public Triangle(double a,double b,double c){
  this.a =a;
  this.b =b;
  this.c =c;
}
/*
* return value description:
* 1.等边三角形
* 2.等腰三角形
* 3.其他三角形
* -1.不是三角形
*/
public int type(){
  if(isTriangle()){
   if(a==b&&b==c){
    return 1;
   }else if(a==b||b==c||c==a){
    return 2;
   }else
    return 3;
  }
  else
   return -1;

}
//auxiliary method which is used to predicate weather three number consist of a triangle or not
private boolean isTriangle(){
  if(Math.abs(a-b)<c&&Math.abs(a-c)<b&&Math.abs(b-c)<a
     &&(a+b>c)&& (a+c >b)&& (b+c >a) )
   return true;
  return false;
}
}

　　单个的测试用例:

package demo2;
import static org.junit.Assert.*;
import org.junit.Test;
public class TriangleTest {
@Test
public void testType(){
Triangle triangle = new Triangle(12,12,4);
assertEquals(2,triangle.type());
}
}

　　参数化的测试用例：

package demo2;
import static org.junit.Assert.*;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.Collection;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

@RunWith(value = Parameterized.class)
public class ParameterTestTriangle {
private double expected;
private double valueOne;
private double valueTwo;
private double valueThree;

@Parameters
//Double is a class type,double is a basic type.
public static Collection<Object []> getTestParameters(){
   return Arrays.asList(new Object [][]{
    {2,12.3,13.5,13.5},
    {2,10,10,4},
    {2,34,5,34},
    {1,6.0,6.0,6.0},
    {1,23,23,23},
    {-1,1.0,4.0,9.0},
    {-1,10,3,15},
    {3,3.0,4.0,5.0},
    {3,12,24,33},
  });
}

public ParameterTestTriangle(double expected, double valueOne,
   double valueTwo,double valueThree){
  this.expected= expected;
  this.valueOne= valueOne;
  this.valueTwo= valueTwo;
  this.valueThree= valueThree;
}

@Test
public void testType(){
  Triangle triangle = new Triangle(valueOne,valueTwo,valueThree);
  assertSame("期待类型和测试类型不同!",(int)expected,triangle.type());
}
}

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