In the plan and document process the final test is for the customers to try the

In the plan and document process the final test is

This preview shows page 334 - 337 out of 517 pages.

In the plan and document process, the final test is for the customers to try the product in their environment to decide whether they will accept the product or not. That is, the aim is validation, not just verification. In Agile development, the customer is involved in trying prototypes of the app early in the process, so there is no separate system test before running the acceptance tests. As you should expect from the plan-and-document process, documentation plays an important role in testing. Figure 8.22 gives an outline for test plan based on IEEE Standard 829-2008. Master Test Plan Outline 1. Introduction 1.1. Document identifier 1.2. Scope 1.3. References 1.4. System overview and key features 1.5. Test overview 1.5.1 Organization 1.5.2 Master test schedule 1.5.3 Integrity level schema 1.5.4 Resources summary 1.5.5 Responsibilities 1.5.6 Tools, techniques, methods, and metrics
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2. Details of the Master Test Plan 2.1. Test processes including definition of test levels 2.1.1 Process: Management Activity: Management of test effort 2.1.2 Process: Acquisition Activity: Acquisition support test 2.1.3 Process: Supply Activity: Planning test 2.1.4 Process: Development Activity: Concept Activity: Requirements Activity: Design Activity: Implementation Activity: Test Activity: Installation/checkout 2.1.5 Process: Operation Activity: Operational test 2.1.6 Process: Maintenance Activity: Maintenance test 2.2. Test documentation requirements 2.3. Test administration requirements 2.4. Test reporting requirements 3. General 3.1. Glossary 3.2. Document change procedures and history Figure 8.22: Outline of Master Test Plan Documentation that follows the IEEE Standard 829-2008. While testing is fundamental to software engineering, quoting another Turing Award winner: Program testing can be used to show the presence of bugs, but never to show their absence! Edsger W. Dijkstra Edsger W. Dijkstra (1930–2002) received the 1972 Turing Award for fundamental contributions to developing programming languages.
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Thus, there has been a great deal of research investigating approaches to verification beyond testing. Collectively, these techniques are known as formal methods . The general strategy is to start with a formal specification and prove that the behavior of the code follows the behavior of that spec. These are mathematical proofs, either done by a person or done by a computer. The two options are automatic theorem proving or model checking . Theorem proving uses a set of inference rules and a set of logical axioms to produce proofs from scratch. Model checking verifies selected properties by exhaustive search of all possible states that a system could enter during execution. Because formal methods are so computationally intensive, they tend to be used only when the cost to repair errors is very high, the features are very hard to test, and the item being verified is not too large.
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  • Spring '19
  • Dr.Marcos

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