《软件测试技术》课程第三周随笔

这次的博客内容为，进一步举例解释等价类划分。大概为上一次的加强版...

1. 问题描述

EditBox

在三个文本输入框内输入文字，然后按确认键。

每个文本框允许接收的文字为：1至6个英文字符或数字。

三个文本框的内容均为合法的的时候，才会被接收。

2.等价类划分

	有效等价类	编号	无效等价类	编号
包括的字符	a-z,A-Z,0-9	1	其他字符	4
字符串长度	1-6	2	0	5
			大于6	6
合法的文本框个数	3	3	0-2	7

3.测试用例

编号	输入	覆盖等价类	预期输出
Test1	a AA 0123	1,2,3	Accepted
Test2	Abd2 ad2dA df12F	1,2,3	Accepted
Test3	12AB34 abAB12 3412aa	1,2,3	Accepted
Test4	11 22 33	1,2,3	Accepted
Test5	a a	5,7	Please try again.
Test6	abcdefg a a	6,7	Please try again.
Test7	@@ 1abc AB12cd	4,7	Please try again.
Test8	a b abcd abcd	4,7	Please try again.
Test9	ab_cd 1234567	4,5,6,7	Please try again.

4.代码实现及结果样例

使用C#编写，具体代码如下。

这是C#自动生成的，描述GUI的Form1.Designer.cs的代码：

namespace csharptest
{
    partial class Form1
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.button1 = new System.Windows.Forms.Button();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.textBox3 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(24, 41);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(185, 21);
            this.textBox1.TabIndex = 0;
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(22, 14);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(191, 12);
            this.label1.TabIndex = 1;
            this.label1.Text = "请在每个框内输入1~6个字母或数字";
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(72, 127);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(75, 23);
            this.button1.TabIndex = 2;
            this.button1.Text = "确认";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(24, 68);
            this.textBox2.Name = "textBox2";
            this.textBox2.Size = new System.Drawing.Size(185, 21);
            this.textBox2.TabIndex = 3;
            // 
            // textBox3
            // 
            this.textBox3.Location = new System.Drawing.Point(24, 95);
            this.textBox3.Name = "textBox3";
            this.textBox3.Size = new System.Drawing.Size(185, 21);
            this.textBox3.TabIndex = 4;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(227, 159);
            this.Controls.Add(this.textBox3);
            this.Controls.Add(this.textBox2);
            this.Controls.Add(this.button1);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.textBox1);
            this.Name = "Form1";
            this.Text = "EditBox";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.TextBox textBox3;
    }
}

这是其他代码，有关于判断字符串是否合法的部分，文件名为Form1.cs：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace csharptest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private bool check(String text)
        {
            if (text.Length <= 0) return false;
            if (text.Length > 6) return false;
            for (int i = 0; i < text.Length; i++)
            {
                char c = text[i];
                if ((c < 'a' || c > 'z') && (c < 'A' || c > 'Z') && (c < '0' || c > '9'))
                    return false;
            }
            return true;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (check(textBox1.Text)&&check(textBox2.Text)&&check(textBox3.Text))
                MessageBox.Show("Accepted");
            else
                MessageBox.Show("Please try again.");
        }

    }
}

测试用例结果图：

测试编号	EditBox	返回结果
Test1
Test2
Test3
Test4
Test5
Test6
Test7
Test8
Test9