	Attempt	Time	Score
LATEST	Attempt 1	153 minutes	3 out of 3

正确还是错误？等价类划分是在具有多个独立的输入时采用的良好技术。

True or False?

Equivalence partitioning is a good technique to utilize when there are multiple independent inputs.

错误 False

Correct!

正确 True

等价类划分必须应用于独立的输入。在本课程的 abs(x) 示例中，必须测试负值、0 和正值，它们都是独立的输入。Equivalence partitioning must be applied with independent inputs. In the lecture example of abs(x), it is necessary to test a negative value, 0, and a positive value which are all independent inputs.

哪一项不是等价类划分步骤？

What is NOT an equivalence partitioning step?

对于每个无效等价类，编写一个测试用例去覆盖其中一个尚未覆盖等价类。For each invalid equivalence partition, write a test case that covers one of the uncovered equivalence partitions.

对于每个输入，识别一组等价类并进行标记。For each input, identify a set of equivalence partitions and label them.

编写多个测试用例，尽可能多的覆盖尚未覆盖的有效等价类。Write test cases covering as many of the uncovered valid equivalence partitions as possible.

Correct!

编写多个测试用例，尽可能多的覆盖尚未覆盖的无效等价类分区。Write test cases covering as many of the uncovered invalid equivalence partitions as possible.

一次只能有一个测试用例去覆盖每个未覆盖的无效等价类。因为等价类划分用于黑盒测试过程，因此如果测试了多个无效类，则无法判断哪个无效类导致了错误。There must only be one test case that covers each uncovered invalid equivalence partition at a time. Since equivalence partitioning is used during black box testing, if there are multiple invalid partitions tested, it is not known which invalid partition caused the error.

测试一个密码长度必须介于 6-8 个字符之间的密码程序，一组良好的等价类是什么？

What are a good set of equivalence partitions for a password testing program where a password must be between 6-8 characters?

1. 6-8 个字符；2. < 6 个字符（1. 6-8 characters; 2 < 6 characters）

1. 6-8 个字符（1. 6-8 characters）

1. < 6 个字符；2. > 8 个字符（1. < 6 character; 2. > 8 characters）

Correct!

1. 6-8 个字符；2. < 6 个字符；3. > 8 个字符（1. 6-8; 2. < 6 characters; 3. > 8 characters）

这些等价类测试所有可能的输入，可能是密码：密码长度介于 6-8 个字符之间的有效密码，密码< 6 个字符和 > 8 个字符的都是无效密码。

These equivalence partitions test all the possible inputs there could be for a password: a valid password between 6-8 characters, an invalid password with < 6 characters, and an invalid password with > 8 characters.

知识检查 2-2：等价类划分测试 Knowledge Check: Equivalence Partitioning Testing

Attempt History