♦ 第一阶段目标
能把计算的功能封装起来，通过测试程序和API接口测试其简单的加法功能。
♣ 第二阶段目标
通过测试程序和API接口测试其简单的加法、减法、乘法、除法功能。并能看到代码覆盖率。
♥ 第三阶段目标
通过测试程序和API接口测试对于各种参数的支持。并能看到代码覆盖率。
♠ 第四阶段目标
通过增量修改改进程序，完成对各种错误情况的处理。
® 开发环境： Eclipse
® 结对伙伴：
| 姓名 | 学号 | 博客地址 |
| 余雅诗（领航员） | 201306114453 | http://www.cnblogs.com/ys1101/ |
| 方俊杰（驾驶员） | 201306114417 | http://www.cnblogs.com/imfjj/ |
源程序：
1 package operation; 2 3 import java.awt.Dimension; 4 import java.awt.EventQueue; 5 import java.awt.Toolkit; 6 import java.awt.event.ActionEvent; 7 import java.awt.event.ActionListener; 8 import java.awt.event.KeyEvent; 9 import java.awt.event.KeyListener; 10 import java.text.DecimalFormat; 11 import java.util.Random; 12 13 import javax.swing.JFrame; 14 import javax.swing.JLabel; 15 import javax.swing.JTextField; 16 import javax.swing.JButton; 17 import javax.swing.SwingConstants; 18 19 public class Test implements ActionListener, KeyListener { 20 21 private JFrame frame; 22 private JTextField textField; 23 private JTextField textField_1; 24 private JTextField textField_2; 25 private JTextField textField_3; 26 private JTextField textField_4; 27 private JTextField textField_5; 28 private JTextField textField_6; 29 private JTextField textField_7; 30 private JButton btnNewButton; 31 private JButton btnNewButton_1; 32 private DecimalFormat df; 33 private Random r = new Random(); 34 35 private int five = 0;// 判断运算符 36 private static double a; 37 private static double b; 38 private JTextField textField_8; 39 private JTextField textField_9; 40 private JTextField textField_10; 41 private JTextField textField_11; 42 private static int num; 43 private static int right; 44 private static int mistake; 45 46 /** 47 * Launch the application. 48 */ 49 public static void main(String[] args) { 50 EventQueue.invokeLater(new Runnable() { 51 public void run() { 52 try { 53 Test window = new Test(); 54 window.frame.setVisible(true); 55 } catch (Exception e) { 56 e.printStackTrace(); 57 } 58 } 59 }); 60 } 61 62 /** 63 * Create the application. 64 */ 65 public Test() { 66 initialize(); 67 } 68 69 /** 70 * Initialize the contents of the frame. 71 */ 72 public static boolean isNumeric(String number) { 73 for (int i = number.length(); --i >= 0;) { 74 75 if (!Character.isDigit(number.charAt(i)) && number.charAt(i) != '.') { 76 return false; 77 } 78 } 79 return true; 80 } 81 82 private void initialize() { 83 84 df = new DecimalFormat(".##");// 保留两位 85 five = r.nextInt(3); 86 int rand = r.nextInt(3); 87 int ran = r.nextInt(3); 88 if (rand % 2 == 0) 89 a = r.nextDouble() * 1000 * (-1); 90 else 91 a = r.nextDouble() * 1000; 92 if (ran % 2 == 0) 93 b = r.nextDouble() * 1000 * (-1); 94 else 95 b = r.nextDouble() * 1000; 96 97 String as = df.format(a); 98 a = Double.parseDouble(as); 99 String ab = df.format(b); 100 b = Double.parseDouble(ab); 101 frame = new JFrame(); 102 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); 103 frame.setSize(500, 500); 104 frame.setLocation((screenSize.width - 500) / 2, 105 (screenSize.height - 500) / 2); 106 frame.getContentPane().setLayout(null); 107 108 JLabel label = new JLabel("u9898u76EE"); 109 label.setBounds(10, 10, 54, 15); 110 frame.getContentPane().add(label); 111 112 textField = new JTextField(); 113 textField.setBounds(46, 7, 66, 21); 114 frame.getContentPane().add(textField); 115 textField.setColumns(10); 116 textField.setText(String.valueOf(a)); 117 118 textField_1 = new JTextField(); 119 textField_1.setBounds(139, 7, 33, 21); 120 frame.getContentPane().add(textField_1); 121 textField_1.setColumns(10); 122 if (five == 0) 123 textField_1.setText("+"); 124 else if (five == 1) 125 textField_1.setText("-"); 126 else if (five == 2) 127 textField_1.setText("*"); 128 else if (five == 3) 129 textField_1.setText("/");// 随机产生第一次进去的运算符号 130 131 textField_2 = new JTextField(); 132 textField_2.setBounds(207, 7, 66, 21); 133 frame.getContentPane().add(textField_2); 134 textField_2.setColumns(10); 135 textField_2.setText(String.valueOf(b)); 136 137 JLabel lblNewLabel = new JLabel(" ="); 138 lblNewLabel.setBounds(283, 10, 31, 15); 139 frame.getContentPane().add(lblNewLabel); 140 141 textField_3 = new JTextField(); 142 textField_3.setBounds(322, 7, 66, 21); 143 frame.getContentPane().add(textField_3); 144 textField_3.setColumns(10); 145 146 JLabel label_1 = new JLabel("u7B54u6848"); 147 label_1.setBounds(10, 52, 54, 15); 148 frame.getContentPane().add(label_1); 149 150 textField_4 = new JTextField(); 151 textField_4.setEditable(false); 152 textField_4.setBounds(46, 49, 66, 21); 153 frame.getContentPane().add(textField_4); 154 textField_4.setColumns(10); 155 156 textField_5 = new JTextField(); 157 textField_5.setEditable(false); 158 textField_5.setBounds(140, 49, 33, 21); 159 frame.getContentPane().add(textField_5); 160 textField_5.setColumns(10); 161 162 textField_6 = new JTextField(); 163 textField_6.setEditable(false); 164 textField_6.setBounds(207, 49, 66, 21); 165 frame.getContentPane().add(textField_6); 166 textField_6.setColumns(10); 167 168 JLabel lblNewLabel_1 = new JLabel(" ="); 169 lblNewLabel_1.setBounds(283, 52, 31, 15); 170 frame.getContentPane().add(lblNewLabel_1); 171 172 textField_7 = new JTextField(); 173 textField_7.setEditable(false); 174 textField_7.setBounds(322, 49, 66, 21); 175 frame.getContentPane().add(textField_7); 176 textField_7.setColumns(10); 177 178 btnNewButton = new JButton("u9000u51FA"); 179 btnNewButton.setBounds(173, 211, 93, 23); 180 frame.getContentPane().add(btnNewButton); 181 182 btnNewButton_1 = new JButton("u4E0Bu4E00u9898"); 183 btnNewButton_1.setBounds(398, 6, 76, 23); 184 frame.getContentPane().add(btnNewButton_1); 185 btnNewButton.addActionListener(this); 186 187 JLabel label_2 = new JLabel("u60C5u51B5"); 188 label_2.setBounds(10, 106, 54, 15); 189 frame.getContentPane().add(label_2); 190 191 textField_8 = new JTextField(); 192 textField_8.setEditable(false); 193 textField_8.setBounds(46, 103, 66, 21); 194 frame.getContentPane().add(textField_8); 195 textField_8.setColumns(10); 196 197 textField_9 = new JTextField(); 198 textField_9.setBounds(46, 134, 66, 21); 199 frame.getContentPane().add(textField_9); 200 textField_9.setColumns(10); 201 202 JLabel lblNewLabel_2 = new JLabel("u9898u91CF"); 203 lblNewLabel_2.setBounds(10, 140, 26, 15); 204 frame.getContentPane().add(lblNewLabel_2); 205 206 JLabel label_3 = new JLabel("u6B63u786Eu91CF"); 207 label_3.setBounds(139, 137, 39, 15); 208 frame.getContentPane().add(label_3); 209 210 textField_10 = new JTextField("0"); 211 textField_10.setEditable(false); 212 textField_10.setBounds(207, 137, 66, 21); 213 frame.getContentPane().add(textField_10); 214 textField_10.setColumns(10); 215 216 JLabel lblNewLabel_3 = new JLabel("u9519u8BEFu91CF"); 217 lblNewLabel_3.setBounds(322, 137, 39, 15); 218 frame.getContentPane().add(lblNewLabel_3); 219 220 textField_11 = new JTextField("0"); 221 textField_11.setEditable(false); 222 textField_11.setBounds(398, 134, 66, 21); 223 frame.getContentPane().add(textField_11); 224 textField_11.setColumns(10); 225 btnNewButton_1.addActionListener(this); 226 } 227 228 @Override 229 public void keyPressed(KeyEvent arg0) { 230 // TODO Auto-generated method stub 231 232 if (arg0.getKeyCode() == KeyEvent.VK_ENTER) { 233 textField_4.setText(textField.getText()); 234 textField_5.setText(textField_1.getText()); 235 textField_6.setText(textField_2.getText()); 236 } 237 } 238 239 @Override 240 public void keyReleased(KeyEvent e) { 241 // TODO Auto-generated method stub 242 243 } 244 245 @Override 246 public void keyTyped(KeyEvent e) { 247 // TODO Auto-generated method stub 248 249 } 250 251 @Override 252 public void actionPerformed(ActionEvent e) { 253 // TODO Auto-generated method stub 254 if (textField_9.getText().equals("")) { 255 256 if (e.getSource() == btnNewButton) 257 { 258 System.exit(0); 259 } 260 textField_8.setText("题量为空！"); 261 262 } 263 264 else if (num < Integer.parseInt(textField_9.getText())) 265 { 266 if (e.getSource() == btnNewButton) 267 { 268 System.exit(0); 269 } 270 271 else if (e.getSource() == btnNewButton_1) 272 { 273 textField_4.setText(textField.getText()); 274 textField_5.setText(textField_1.getText()); 275 textField_6.setText(textField_2.getText()); 276 277 if (textField_1.getText().equals("+") 278 || textField_1.getText().equals("-") 279 || textField_1.getText().equals("*") 280 || textField_1.getText().equals("/")) 281 { 282 if (textField_3.getText().equals("")) 283 { 284 textField_8.setText("答案为空"); 285 textField_7.setText(null); 286 textField_4.setText(null); 287 textField_5.setText(null); 288 textField_6.setText(null); 289 } 290 else 291 { 292 if (textField_1.getText().equals("+")) 293 { 294 Additive add = new Additive( 295 Double.parseDouble(textField.getText()), 296 Double.parseDouble(textField_2.getText()));// 构造对象 297 double c = add.Get_AaddB(); 298 String cs = df.format(c); 299 c = Double.parseDouble(cs); 300 System.out.print("cs=" + cs + "c=" + c); 301 textField_7.setText(String.valueOf(c)); 302 System.out.println(" 加法代码覆盖为100% "); 303 } 304 else if (textField_1.getText().equals("-")) 305 { 306 Subduction sub = new Subduction( 307 Double.parseDouble(textField.getText()), 308 Double.parseDouble(textField_2.getText())); 309 310 double c = sub.Get_AsbuB(); 311 String cs = df.format(c); 312 c = Double.parseDouble(cs); 313 314 textField_7.setText(String.valueOf(c)); 315 System.out.println(" 减法代码覆盖为100% "); 316 } 317 else if (textField_1.getText().equals("*")) 318 { 319 Multiplication mul = new Multiplication( 320 Double.parseDouble(textField.getText()), 321 Double.parseDouble(textField_2.getText())); 322 323 double c = mul.Get_AmulB(); 324 String cs = df.format(c); 325 c = Double.parseDouble(cs); 326 textField_7.setText(String.valueOf(c)); 327 System.out.println(" 乘法代码覆盖为100% "); 328 } 329 else if (textField_1.getText().equals("/")) 330 { 331 Division div = new Division( 332 Double.parseDouble(textField.getText()), 333 Double.parseDouble(textField_2.getText())); 334 335 if (div.Get_b() != 0) 336 { 337 double c = div.Get_AmulB(); 338 String cs = df.format(c); 339 c = Double.parseDouble(cs); 340 textField_7.setText(String.valueOf(c)); 341 System.out.println(" 除法代码覆盖为100% "); 342 343 } 344 345 else 346 { 347 textField_8.setText("分母不能为" + 0 + " "); 348 textField_7.setText(null); 349 textField_4.setText(null); 350 textField_5.setText(null); 351 textField_6.setText(null); 352 } 353 354 } 355 if (this.isNumeric(textField_3.getText())) 356 { 357 if (Double.parseDouble(textField_3.getText()) == Double 358 .parseDouble(textField_7.getText())) 359 { 360 textField_8.setText("答对了"); 361 right++; 362 textField_10.setText(String.valueOf(right)); 363 } 364 else 365 { 366 textField_8.setText("答错了"); 367 mistake++; 368 textField_11.setText(String.valueOf(mistake)); 369 370 } 371 } 372 else 373 textField_8.setText("答案无效"); 374 375 } 376 377 } 378 else 379 { 380 textField_8.setText("符号无效"); 381 textField_7.setText(null); 382 textField_4.setText(null); 383 textField_5.setText(null); 384 textField_6.setText(null); 385 } 386 387 five = r.nextInt(4);// 重新设置运算 388 int rand = r.nextInt(3); 389 int ran = r.nextInt(3); 390 if (rand % 2 == 0) 391 a = r.nextDouble() * 1000 * (-1); 392 else 393 a = r.nextDouble() * 1000; 394 if (ran % 2 == 0) 395 b = r.nextDouble() * 1000 * (-1); 396 else 397 b = r.nextDouble() * 1000; 398 399 String as = df.format(a); 400 a = Double.parseDouble(as); 401 String ab = df.format(b); 402 b = Double.parseDouble(ab); 403 textField.setText(String.valueOf(a)); 404 if (five == 0) 405 textField_1.setText("+"); 406 else if (five == 1) 407 textField_1.setText("-"); 408 else if (five == 2) 409 textField_1.setText("*"); 410 else if (five == 3) 411 textField_1.setText("/");// 随机产生第一次进去的运算符号 412 413 textField_2.setText(String.valueOf(b)); 414 415 textField_3.setText(null); 416 num++; 417 if (num == Integer.parseInt(textField_9.getText())) 418 { 419 textField_8.setText("已完成答题"); 420 } 421 422 } 423 424 } 425 426 427 428 } 429 430 }
1 package operation; 2 3 import java.text.DecimalFormat; 4 import java.util.Random; 5 import java.util.Scanner; 6 7 public class Additive { 8 9 private static double a; 10 private static double b; 11 Scanner in=new Scanner(System.in); 12 public Additive(double c,double d) 13 { 14 this.a=c; 15 this.b=d; 16 } 17 public double Get_AaddB() 18 { 19 return a+b; 20 21 } 22 public double Get_a() 23 { 24 return a; 25 } 26 public double Get_b() 27 { 28 return b; 29 } 30 31 32 33 34 35 36 }
1 package operation; 2 3 import static org.junit.Assert.*; 4 5 import org.junit.Test; 6 7 public class AdditiveTest { 8 @Test 9 public void testGet_AaddB() { 10 Additive add=new Additive(3,4); 11 double a=add.Get_AaddB(); 12 assertEquals(7, (int)a); 13 } 14 }
1 package operation; 2 3 import java.util.Scanner; 4 5 class Subduction { 6 private static double a; 7 private static double b; 8 Scanner in=new Scanner(System.in); 9 public Subduction(double a,double b) 10 { 11 this.a=a; 12 this.b=b; 13 } 14 public double Get_AsbuB() 15 { 16 return a-b; 17 } 18 public double Get_a() 19 { 20 return a; 21 } 22 public double Get_b() 23 { 24 return b; 25 } 26 27 }
1 package operation; 2 3 import static org.junit.Assert.*; 4 5 import org.junit.Test; 6 7 public class SubductionTest { 8 9 @Test 10 public void testGet_AsbuB() { 11 Subduction sub=new Subduction(10,5); 12 double a=sub.Get_AsbuB(); 13 assertEquals(5, (int)a); 14 } 15 16 }
1 package operation; 2 3 import java.util.Scanner; 4 5 public class Multiplication { 6 private static double a; 7 private static double b; 8 Scanner in=new Scanner(System.in); 9 public Multiplication(double a,double b) 10 { 11 this.a=a; 12 this.b=b; 13 } 14 public double Get_AmulB() 15 { 16 17 18 19 return a*b; 20 } 21 public double Get_a() 22 { 23 return a; 24 } 25 public double Get_b() 26 { 27 return b; 28 } 29 30 31 }
1 package operation; 2 3 import static org.junit.Assert.*; 4 5 import org.junit.Test; 6 7 public class MultiplicationTest { 8 9 @Test 10 public void testGet_AmulB() { 11 Multiplication mul=new Multiplication(5,5); 12 double a=mul.Get_AmulB(); 13 assertEquals(25, (int)a); 14 } 15 16 }
1 package operation; 2 3 import java.util.Scanner; 4 5 public class Division { 6 private static double a; 7 private static double b; 8 Scanner in=new Scanner(System.in); 9 public Division(double a,double b) 10 { 11 this.a=a; 12 this.b=b; 13 } 14 public double Get_AmulB() 15 { 16 return a/b; 17 } 18 public double Get_b() 19 { 20 return b; 21 } 22 public double Get_a() 23 { 24 return a; 25 } 26 27 }
1 package operation; 2 3 import static org.junit.Assert.*; 4 5 import org.junit.Test; 6 7 public class DivisionTest { 8 9 @Test 10 public void testGet_AmulB() { 11 Division div=new Division(30,5); 12 double a=div.Get_AmulB(); 13 assertEquals(6, (int)a); 14 15 } 16 }
这次的更新主要是：
-
在第一次版本的基础上加了单元测试的调试，测试结果符合预想，错误数跟失误数都为0。
加法测试：
减法测试：
乘法测试：
除法测试：
-
添加了题目随机数的范围（（-1000）— 1000 ）。
- 添加了代码覆盖率（主要通过分别在四道算法的代码最后添加了一句：System.out.println(" 加法代码覆盖为100% ");System.out.println(" 减法代码覆盖为100% ");System.out.println(" 乘法代码覆盖为100% ");System.out.println(" 除法代码覆盖为100% ");）
- 添加了题量的判断，对于异常处理的情况均在界面中的“情况”文本框中显示了。
| 测试项目名称 | 小学生简易四则运算--（单元测试篇） | |||
| 测试人员 | 方俊杰、余雅诗 | 编制日期 | 2015年5月8日 | |
| 功能特性 | 封装；支持加减乘数算法；支持小数、负数；具备界面；具备报错处理 | |||
| 用例编号 | 输入数据 | 预期输出 | 实际输出 | 测试状态 |
| 1 | (22.25 , p , 45.57) | 67.82 | NULL | 符号无效 |
| 2 | (1.25 , + , 2.57) | 3.82 | 3.82 | 答对了 |
| 3 | (87.84 , + , 17.99) | 50.33 | 105.83 | 答错了 |
| 4 | (5.7 , + , 53.98) | NULL | NULL | 答案为空 |
| 5 | (39.59 , + , 97.87) | op | 137.46 | 答案无效 |
| 6 | (3 , - , 3) | 0.0 | 0.0 | 答对了 |
| 7 | (7.25 , - , 78.22) | 23.87 | -70.97 | 答错了 |
| 8 | (31.74 , - , 81.93) | NULL | -50.19 | 答案为空 |
| 9 | (67.18 , - , 50.95) | p | 16.23 | 答案无效 |
| 10 | (88.21 , * , 67.32) | 5938.3 | 5938.30 | 答对了 |
| 11 | (56.46 , * , 69.8) | 1024.5 | 3940.91 | 答错了 |
| 12 | (41.38 , * , 93.33) | NULL | 3862.0 | 答案为空 |
| 13 | (3.18 , * , 93.47) | jj | 297.23 | 答案无效 |
| 14 | (67.04 , / , 0) | 0 | NULL | 分母不能为0 |
| 15 | (18.43 , / , 1) | 18.43 | 18.43 | 答对了 |
| 16 | (56.82 , / , 1) | 56.81 | 56.82 | 答错了 |
| 17 | (42.35 , / , 72.3) | NULL | 0.59 | 答案为空 |
| 18 | (60.44 , / , 47.37) | ys | 1.28 | 答案无效 |
| 测试结果分析 | 与预期结果一致 | |||
结对工作过程：
收获与感悟：
（ 在这一次结对子小项目中 ）
- 我主要充当领航员的作用，我的同伴充当着驾驶员的作用，有时我们也互相交换着彼此的角色。
- 我的同伴主要是对程序进行编码，然后由我来提出见解、后期调试、撰写文档。
- 这次主要是对上一次结对项目的补充，让我们发现了我们之前所理解的“单元测试”与实际的“单元测试”是两个概念，经过调整后，最后还是学会了。
- 这次作业比较轻松，因为是改进自己团队已经做了一部分的项目，针对自己团队的思路，比较容易修改。
- 我和队友首先在课余时间先商量具体的工作，然后在课堂时间编程，在课后我们一起到了图书馆一起工作，互相提醒对方。
- 当完成程序的所有编写、测试、撰稿后，很有成就感。
- 希望自己在下次的结对子项目中能够有实力充当“驾驶员”的角色。
- 依然非常期待下一次的结对项目，因为在结对子项目中，我们都可以互补优缺。