N this chapter, we will introduce you to the fundamentals of testing: why testing is
partitioning, boundary value analysis, decision tables and
tải về 6.34 Mb. Chế độ xem pdf
|
partitioning, boundary value analysis, decision tables and state transition diagrams/tables. (K3) LO-4.3.2 Explain the main purpose of each of the four testing techniques, what level and type of testing could use the technique, and how coverage may be measured. (K2) LO-4.3.3 Explain the concept of use case testing and its benefits. (K2) In this section we will look in detail at four specification-based or black-box techniques. These four techniques are K3 in the Syllabus – this means that you need to be able to use these techniques to design test cases. We will also cover briefly (not at K3 level) the specification-based technique of use case testing. In Section 4.4, we will look at the K3 structure-based techniques. In this section, look for the definitions of the glossary terms boundary value, boundary value analysis, decision table, decision table testing, equivalence parti- tion, equivalence partitioning, state diagram, state table, state transition testing, and use case testing. The four specification-based techniques we will cover in detail are: l equivalence partitioning; l boundary value analysis; l decision tables; l state transition testing. Note that we will discuss the first two together, because they are closely related. 4.3.1 Equivalence partitioning and boundary value analysis Equivalence partitioning Equivalence partitioning (EP) is a good all-round specification-based black-box technique. It can be applied at any level of testing and is often a good technique to use first. It is a common sense approach to testing, so much so that most testers practise it informally even though they may not realize it. However, while it is better to use the technique informally than not at all, it is much better to use the technique in a formal way to attain the full benefits that it can deliver. This technique will be found in most testing books, including [Myers 1979] and [Copeland 2003]. The idea behind the technique is to divide (i.e. to partition) a set of test conditions into groups or sets that can be considered the same (i.e. the system should handle Equivalence tải về 6.34 Mb. Chia sẻ với bạn bè của bạn:
|