Software Testing Techniques 2nd Eidition by Boris Beizer and a great selection of similar Used, New and Collectible Books available now at AbeBooks.com.

Every professional and commercial software development organization spends a great deal of time in the testing and validation of their software. The testing process, driven either by legal or financial requirements, can be expensive and may thwart the planned deployment of the application.

Many studies indicate that the testing process can even take three times as long as the actual coding itself. Indeed, software development done under the ISO 9000 or FDA auspices can be extremely time intensive. This book gives a lengthy and fairly comprehensive overview of software testing that emphasizes formal models for testing. In the introduction, the author gives a general overview of the testing process and the reasons and goals for testing. He carefully distinguishes between testing and debugging, and advocates these as separate activities.

Testing according to the author is done to find bugs; whereas debugging is done to find the origin of the bugs and fix them. The author characterizes testing as either functional or structural. Functional testing treats the program from the user's point of view, with inputs given to the program, and then the outputs are checked for conformance to a specified reference. Structural testing examines how the program is implemented, in terms of programming style, design, etc.

The notion of an oracle is defined as any program or process that specifies the expected outcome of a collection of tests. The author clearly identifies and characterizes the different types of tests that arise in development organizations, such as unit testing, regression testing, stress testing, and integration testing.

'More than the act of testing, the act of designing tests is one of the best bug preventers known. The thinking that must be done to create a useful test can discover and eliminate bugs before they are coded - indeed, test-design thinking can discover and eliminate bugs at every stage in the creation of software, from conception to specification, to design, coding and the rest. ' - - Software Testing Techniques, Creating a Software Engineering Culture by Karl Eugene Wiegers, ISBN:, Page: 211. 8 Ball Pool Game Pc. 'Forget that lone hacker image if you still cherish it.

And if contemporary software engineering with its procedural structure bothers you, if you're blind to the opportunities for expressing your personal creativity within its necessary constraints, if the fast-tight algorithm is still the driving force in your designs - then get out! Find another domain, such as an R&D sandbox or an unreconstructed software shop, in which to play at programming. ' - - Chapter 11: Implementation, Section 3.2.2., Software testing techniques by Boris Beizer, ISBN. 'The most common kind of coding bug, and often considered the least harmful, are documentation bugs (i.e., erroneous comments).

Although many documentation bugs are simple spelling errors or the result of poor writing, many are actual errors - that is, misleading or erroneous comments. We can no longer afford to discount such bugs, because their consequences are as great as 'true' coding errors. Today programming labor is dominated by maintenance. This will increase as software becomes even longer-lived.

Documentation bugs lead to incorrect maintenance actions and therefore cause the insertion of other bugs. ' - - Chapter 2: The Taxonomy of Bugs, Section 3.5., Software testing techniques by Boris Beizer, ISBN.