Seagate ST43401N/ND Guia de Instalação descarregar pdf (Página 92)

Summary of Testing Techniques

84

Technique Description Advantages Disadvantages

Ad hoc

testing

Manually walk through

important application

processes, screens, and

reports

• Easy to implement

• Tests front-end

applications and

back-end servers

• For complex applications, code

coverage is too small

• Difficult to distinguish front-end and

back-end bottlenecks if response time

is a determining factor

• Impossible to obtain production

multiuser load, which misses

concurrency and capacity issues

altogether

Manual

performance

scripts and

cases

Specify input and

compare with known

outputs

• Easy to implement

• Common basis for

regression test suites

• Back-end focus may

help locate the cause

of a problem

• Only tests back- end server

• Impossible to obtain production

multiuser load, which misses

concurrency and capacity issues

altogether

• No ad hoc query testing

• Depends on strong analysis of process

or transaction profiles

Keystroke

capture

Record and replay

keystrokes and mouse

clicks into an application

• Tests front-end

applications and

back-end servers

• Tool may include

powerful language

and looping

capabilities to

manipulate inputs for

multiuser

concurrency and

capacity testing

• Heavy processing requirements - may

require additional hardware

• May increase development time for

creating multiuser test simulations,

and add time for debugging test

harness

• Depends on strong analysis of process

or transaction profiles

Concurrency

and capacity

testing

Use third-party load-

testing tools

• Tests both front and

back ends

• Language and

looping constructs

make these incredibly

powerful tools

• Heavy processing requirements for

test tool—may even require additional

hardware or else results could be

skewed

• Learning and development curve to

write multi-user test simulations

• Risk of bugs in test harness could

skew results

• Dependent on strong analysis of

process/transaction profiles

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