开发者测试例题1--TriangleTest（暂时不详细）

开发者测试例题1--TriangleTest（暂时不详细）

开发者测试例题（考分支覆盖）

package net.mooctest;public class Triangle { protected long lborderA = 0; protected long lborderB = 0; protected long lborderC = 0; // Constructor public Triangle(long lborderA, long lborderB, long lborderC) { this.lborderA = lborderA; this.lborderB = lborderB; this.lborderC = lborderC; } /** * check if it is a triangle * * @return true for triangle and false not */ public boolean isTriangle(Triangle triangle) { boolean isTriangle = false; // check boundary if ((triangle.lborderA > 0 && triangle.lborderA <= Long.MAX_VALUE) && (triangle.lborderB > 0 && triangle.lborderB <= Long.MAX_VALUE) && (triangle.lborderC > 0 && triangle.lborderC <= Long.MAX_VALUE)) { // check if subtraction of two border larger than the third if (diffOfBorders(triangle.lborderA, triangle.lborderB) < triangle.lborderC && diffOfBorders(triangle.lborderB, triangle.lborderC) < triangle.lborderA && diffOfBorders(triangle.lborderC, triangle.lborderA) < triangle.lborderB) { isTriangle = true; } } return isTriangle; } /** * Check the type of triangle * * Consists of "Illegal", "Regular", "Scalene", "Isosceles" */ public String getType(Triangle triangle) { String strType = "Illegal"; if (isTriangle(triangle)) { // Is Regular if (triangle.lborderA == triangle.lborderB && triangle.lborderB == triangle.lborderC) { strType = "Regular"; } // If scalene else if ((triangle.lborderA != triangle.lborderB) && (triangle.lborderB != triangle.lborderC) && (triangle.lborderA != triangle.lborderC)) { strType = "Scalene"; } // if isosceles else { strType = "Isosceles"; } } return strType; } /** * calculate the diff between borders * * */ public long diffOfBorders(long a, long b) { return (a > b) ? (a - b) : (b - a); } /** * get length of borders */ public long[] getBorders() { long[] borders = new long[3]; borders[0] = this.lborderA; borders[1] = this.lborderB; borders[2] = this.lborderC; return borders; }}

先分享代码例子，就是举出所有分支和语句的例

package net.mooctest;import static org.junit.Assert.*;import org.junit.Test;public class TriangleTest { Triangle T1 = new Triangle(5, 3, 4); Triangle T2=new Triangle(5,4,3); Triangle T3=new Triangle(4,3,5); Triangle T4=new Triangle(5,Long.MAX_VALUE,4); Triangle T5=new Triangle(5,3,Long.MAX_VALUE); Triangle T6=new Triangle(Long.MAX_VALUE,3,4); Triangle T7=new Triangle(-1,3,4); Triangle T8=new Triangle(5,-1,4); Triangle T9=new Triangle(5,3,-1); Triangle T10=new Triangle(3,3,3); Triangle T11=new Triangle(4,3,3); Triangle T12=new Triangle(3,3,4); Triangle T13=new Triangle(3,4,3); Triangle T14=new Triangle(6,8,10); long []borders= {0,0,0}; @Test public void testIsTriangle() { assertTrue(T1.isTriangle(T1)); assertTrue(T2.isTriangle(T2)); assertTrue(T3.isTriangle(T3)); assertFalse(T4.isTriangle(T4)); assertFalse(T5.isTriangle(T5)); assertFalse(T6.isTriangle(T6)); assertFalse(T7.isTriangle(T7)); assertFalse(T8.isTriangle(T8)); assertFalse(T9.isTriangle(T9)); assertTrue(T10.isTriangle(T10)); assertTrue(T11.isTriangle(T11)); assertTrue(T12.isTriangle(T12)); assertTrue(T13.isTriangle(T13)); assertTrue(T14.isTriangle(T14)); } @ Test public void testgetType() { assertEquals("Illegal", T4.getType(T4)); assertEquals("Regular", T10.getType(T10)); assertFalse(" Regular"==T11.getType(T11)); assertTrue("Isosceles"==T11.getType(T11)); assertFalse("Regular"== T12.getType(T12)); assertFalse("Regular"==T13.getType(T13)); assertFalse("Regular"==T14.getType(T14)); assertEquals("Scalene", T14.getType(T14)); } @Test public void testdiffOfBorders() { assertFalse(1==T1.diffOfBorders(T1.lborderA,T1.lborderB)); assertEquals(0,T10.diffOfBorders(T10.lborderC,T10.lborderB)); assertEquals(2,T14.diffOfBorders(T14.lborderA,T14.lborderB)); } @Testpublic void isgetBorders() { borders=T10.getBorders(); assertTrue(T10.lborderA==borders[0]); assertEquals(T10.lborderB,borders[1]); assertEquals(T10.lborderC,borders[2]); } }

明天比赛，临时抱个佛脚，具体后来解释（主要看前2个，越高越好）

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