... So, the purpose of this updated edition ofTheArtofSoftware Test-ing is the same as it was in 1979: to fill these knowledge gaps for the professional programmer and the student of computer ... itself. Therefore, we will start our discussion of soft-ware testing with these issues before we delve into the more techni-cal nature ofthe topic. The Psychology of TestingOne ofthe primary ... testing. They, too, took a moretransient approach to the topic.Myers’s TheArtofSoftware Testing, on the other hand, gave the industry a long-lasting, foundational guide to one ofthe most...
... to them bycorrect living and the necessary facial massage. The skin ofthe face wrinkles exactly for the same reason and by the same mechanism that the skin of an applewrinkles. The pulp ofthe ... soap are necessary. The shock of cold water immediately closes the pores, and they then retain all the impurities that they should castout. The temperature ofthe water for the daily tepid bath ... out over the ears will not only add grace to the forehead but lighten the heaviness ofthe lower part ofthe face. A bow of ribbon or any other perky little headdress will detractfrom the straight...
... yet undiscoverederror.20 TheArtofSoftware TestingFigure 2.2 The Surprising Errors Remaining/Errors FoundRelationship.01.qxd 4/29/04 4:32 PM Page 20 TheArt of Software TestingSecond EditionGlenford ... on these sections during the computer-based testing processes (one ofthe testing principles of Chapter 2).26 TheArtofSoftware Testing01.qxd 4/29/04 4:32 PM Page 26 infeasible. Perhaps, then, ... than the actual process itself. Therefore, we will start our discussion of soft-ware testing with these issues before we delve into the more techni-cal nature ofthe topic. The Psychology of...
... 1-6 shows the layout ofthe flags within the lower 16 bits ofthe EFLAGS register. Figure 1-6: Layout ofthe FLAGS register (lower 16 bits of EFLAGS) Of the eight flags that are of interest ... how the 80x86 stores bytes, words (2 bytes), and double words (4 bytes) in memory. The memory address of each of these objects is the address ofthe first byte of each object (that is, the ... Note that the while loop, like its high-level-language counterpart, tests for loop termination at the top ofthe loop. Therefore, it is quite possible that the statements in the body ofthe loop...
... agree with the severity ofarchitecture s offense as according to Ruskin, the point is made clear: we approach architecture with a set of expectations, and if these are violated then we often feel ... applying the aesthetic criteria of a proverbial horse to that of a man by attempting to aesthetically appreciate a restaurant within the shell of a distillery? To extend the metaphor, the reassigned ... intermediate form, say ofthe architectural centaur, and in such cases, neither the aesthetic criteria of man nor horse seems appropriate. I explore further consequences of this issue in the sections...
... description ofthe correct output ofthe programfor that set of input data.14 TheArtofSoftware Testing01.qxd 4/29/04 4:32 PM Page 14 An Error Checklist for InspectionsAn important part ofthe ... ofSoftware Testing01.qxd 4/29/04 4:32 PM Page 18 So, the purpose of this updated edition ofTheArtofSoftware Test-ing is the same as it was in 1979: to fill these knowledge gaps for the professional ... itself. Therefore, we will start our discussion of soft-ware testing with these issues before we delve into the more techni-cal nature ofthe topic. The Psychology of TestingOne ofthe primary...
... that the voltage has the shown polarity. The point is that by having a reference, you will be able to tell by the sign ofthe readings the true polarity. Of course, flipping the leads ofthe ... equation. In the case of loop1, the equa-tion contains terms for the voltage source, R1 and R2. It is:Note the sign ofthe first term. As we go around the loop, we hit the negative end of the supply ... at just the right voltage. The reason this idea is so bad is that the I-V curve, and thus the required voltage, vary depending upon the particular LED, the temperature, the phase ofthe moon,...
... two other properties:1. It reduces, by more than a count of one, the number of othertest cases that must be developed to achieve some predefinedgoal of “reasonable” testing.52 TheArtofSoftware ... toward the program rather than the programmer. In other words, errors are not viewed as weaknesses in the person who committed them. Rather, they are viewed as beinginherent in the difficulty ofthe ... outcomes, but they cover only two ofthe fourdecision outcomes (both of them cover path abe and, hence, do notexercise the true outcome ofthe first decision and the false outcome of the second...
... expression in the program were60 TheArtofSoftware Testing01.qxd 4/29/04 4:32 PM Page 60 instance, perhaps the MTEST program ofthe previous section fails if the product ofthe number of questions ... titles. The next input conditions are the presence of correct-answer records and the number -of- questions field on the first answer62 TheArtofSoftware TestingFigure 4.4Input to the MTEST ... vertically on the left side ofthe sheet of paper; the effectnodes are listed vertically on the right side. The semantic content of the specification is carefully analyzed to interconnect the causes...
... cases invoked, for the most part, the same set of causes, different values for the causes wereselected to slightly improve the yield ofthe test cases. Also note that,because ofthe actual storage ... with several of the testing principles in Chapter 2. Identifying the expected output of each test case is an inherent part ofthe technique (each column in the decision table indicates the expected ... way of managing the combined elements of testing, since attention isfocused initially on smaller units ofthe program. Second, moduletesting eases the task of debugging (the process of pinpointing...
... management system, or124 TheArtofSoftware TestingFigure 6.1 The software development process.02.qxd 4/29/04 4:36 PM Page 124 it to the output ofthe prior stage (the statement of objectives) andfeeding ... H is the BONUSmodule of Figure 5.2, it might be impossible, because ofthe nature of intervening module D, to create some ofthe seven test cases of Figures 5.5 and 5.6.114 TheArtofSoftware ... dur-ing the communication and translation of information.This view ofsoftware development is illustrated in Figure 6.1, amodel ofthe development cycle for a software product. The flow of the...
... produced at the exact point of the error, so it doesn’t show the program’s state at the point of the error. Program actions between the time ofthe dump and the time ofthe error can mask the clues ... area of program testing is of interest to you,research the concept of inductive assertions. The goal of this methodis the development of a set of theorems about the program in ques-tion, the ... processingtime—which is frequently the case if thesoftware is accessinga remote system—then a message should be displayedinforming the user of what is going on.136 TheArtofSoftware Testing02.qxd...
... half ofthe number of students,rounded up to the next integer. In other words, if you think of the grades as being stored in a sorted table, the program is printing the entry number ofthe middle ... notinduce another error somewhere else in the application. The Probability ofthe Fix Being Correct Drops as the Size ofthe Program IncreasesStating it differently, in our experience the ratio of errors ... was the state ofthe program at this point, then this must have been the state ofthe program up here,” you can quickly pinpoint the error.With this process you’re looking for the location in the...
... segment the testing of an Internet applica-tion into discrete entities, you can do the same when testing the pres-202 TheArtofSoftware TestingFigure 9.2Detailed view of Internet application architecture. ClientsInternetCreditCardProcessingShippingCompaniesBankAccountServicesHosted ... versions ofthe same browser aswell. Vendors often improve some feature of their browser with eachrelease, which may or may not be compatible with older versions.204 TheArtofSoftware Testing03.qxd ... Internet-based applications due to the large number of elements you cannotcontrol and the number of interdependent components. Adequately196 TheArtofSoftware Testing03.qxd 4/29/04 4:37...
... 142Sieve of Eratosthenes, 190 Software development, vs. test-ing, 127 Software development cycle,123, 124 Software documentation, 125 Software errors:causes, 124, 125preventing, 125 Software ... externalspecification, 124 Software prediction, 140 Software proving, 140 Software reliability engineering(SRE), 140 Software requirements, 125232 Indexbindex.qxd 4/30/04 9:55 AM Page 232 Software testing:vs. ... type of system testing ofthe application with largevolumes of data to determine whether the application can handle the volume of data specified in its objectives. Volume testing is not the same...