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示例

测试依据

系统应该接受18~80岁(年龄基于用户的输入)的保险申请;年龄若不满足要求,就应该拒绝申请;如果年龄大于70岁,那么就应该提示用户,它们需要支持$1000的额外费用;

测试出口准则

测试出口准则为100%的等价类划分覆盖;且所有测试用例必须为Pass;

测试规格

根据出口准则,测试规格为根据所描述系统行为的等价类划分;

首先对输出进行等价类划分:

  • TCOND-1. 18 �≤ Age ≤� 80
  • TCOND-2. Age < 18
  • TCOND-3. Age> 80

还有一个是隐含的无效输入,把无效输入分为两个等价类:

  • TCOND-4. Age = alphabetic
  • TCOND-5. Age = special character

考虑到输出,分为如下等价类:

  • TCOND-6. Accept (is induced by 18 � Age � 80)
  • TCOND-7. Reject (is induced by (Age < 18) OR (Age > 80))
  • TCOND-8. Excess warning (is induced by 70 � Age � 80)

无效的等价类对应的输出则以上皆非的输出;

假设还存在一个折扣的测试规格:

  • TCOND-9. Discount message (is induced by 40 � Age � 55)

测试覆盖项

使用等价类对测试规格进行覆盖:

  • TCI-1. 18 � Age � 80 (covers TCOND-1/TCOND-6)
  • TCI-2. Age< 18 (covers TCOND-2/TCOND-7)
  • TCI-3. Age > 80 (covers TCOND-3/TCOND-7)
  • TCI-4. Age = w (covers TCOND-4)
  • TCI-5. Age = & (covers TCOND-5)
  • TCI-6. 70 � Age � 80 (covers TCOND-8)
  • TCI-7. 40 � Age � 55 (covers TCOND-9)

测试用例

创建如下用例对以上测试覆盖项进行覆盖:

  • CASE#1. Input: ‘Age =53’ Expected Result: ‘Accept’. (exercises TCI-1 & TCI-7)
  • CASE#2. Input: ‘Age = 15’ Expected Result: ‘Reject’. (exercises TCI-2)
  • CASE#3. Input: ‘Age = 89’ Expected Result: ‘Reject’. (exercises TCI-3)
  • CASE#4. Input: ‘Age = w’ Expected Result: ‘Reject’. (exercises TCI-4)
  • CASE#5. Input: ‘Age =&’ Expected Result: ‘Reject’. (exercises TCI-5)
  • CASE#6. Input: ‘Age =77’ Expected Result: ‘Accept+Warn’. (exercises TCI-6 & TCI-1)

测试集

把以上测试用例分为两个测试集合:

  • TS1: CASES # 4 and 5 - manual testing.
  • TS2: CASES # 1, 2, 3, and 6 - automated testing.