Software Testing Technology Experiment 2 Boundary Value Analysis Method Experiment

Experiment 2 Boundary Value Analysis Experiment

1. Experimental purpose

1. Use Eclipse to build the test environment.

2. Master boundary value analysis method to design test cases.

2. Experimental content

1. Read the description of the triangle problem carefully, correct the source code errors given in the guide, and compile the correct source code under test and record it as follows:

Correct procedure for triangle problems:

import java.util.Scanner;

public class Rjcs {
public static void main(String[] args) {
@SuppressWarnings("resource")
Scanner sc = new Scanner(System.in);
System.out.println("Please enter the value of a");
int a = sc.nextInt();
System.out.println("Please enter the value of b");
int b = sc.nextInt();
System.out.println("Please enter the value of c");
int c = sc.nextInt();
if(a>=1 & amp; & amp;a<=200) {
if(b>=1 & amp; & amp; b<=200) {
if(c>=1 & amp; & amp;c<=200) {
test(a,b,c);
}else {
System.out.println("The value of c is illegal!");
}
}else {
System.out.println("The value of b is illegal!");
}
}else {
System.out.println("The value of a is illegal!");
}
}
//Determine triangle type
public static void test(int a,int b,int c){
boolean pd = false;
if((a + b>c) & amp; & amp;(a + c>b) & amp; & amp;(b + c>a)){
if((a==b) & amp; & amp;(b==c)) {
System.out.println("Equilateral Triangle");
}else if((a==b)||(b==c)||(a==c)) {
System.out.println("Isosceles Triangle");
}else {
System.out.println("General triangle");
}
}else {
System.out.println("Cannot form a triangle");
}
}
}

2. Use boundary value analysis method to design test cases. The analysis is as follows:

The value ranges of the three sides a, b, and c are 1≤a≤100, 1≤b≤100, 1≤c≤100; respectively. Therefore, the boundary values of the three sides can be taken as side a: 0,1,2,99,100,101, side b: 0,1,2,99,100,101, side c: 0,1,2,99,100,101.

3. Selection of boundary points and selection of test data.

Table 2-1 Triangle problem boundary points and corresponding test data

Enter conditions	Boundary value	Test Data
Side length a	1,100	0,1,2,99,100,101
Side length b	1,100	0,1,2,99,100,101
Side length c	1,100	0,1,2,99,100,101

4. Test case design

Table 2-2 Boundary value test cases for triangle problems

test case serial number	Input data			expected output A/B/C/x is not compliant	Test Results A/B/C/x is not compliant	defect Y/N
	a	b	c
1	0	3	4	aIllegal	a does not comply with regulations	N
2	1	3	4	D	D	N
3	2	3	4	C	C	N
4	99	98	97	C	C	N
5	100	98	97	C	C	N
6	101	98	97	aIllegal	aIllegal	N
7	10	0	11	bIllegal	bIllegal	N
8	10	1	11	D	D	N
9	10	2	11	C	C	N
10	98	99	97	C	C	N
11	98	100	97	C	C	N
12	98	101	97	bIllegal	bIllegal	N
13	12	11	0	cIllegal	cIllegal	N
14	12	11	1	D	D	N
15	12	11	2	C	C	N
16	98	97	99	C	C	N
17	98	97	100	C	C	N
18	98	97	101	cIllegal	cIllegal	N

3. Experiment summary

Through this experiment, I learned about the boundary value analysis method in black box testing. Mastered the boundary value analysis method and how to write boundary value test cases, and how to determine and test boundary values. The experiment can be completed successfully!