Chapter 8

Question 1

Why do we need TESTING?

Answer 1

To show that a program does what it is INTENDED to do and to discover program DEFECTS

Question 2

What can testing REVEAL?

Answer 2

Testing can reveal the presence of ERRORS, but NOT their absence.

Question 3

Draw a scheme of testing as input-output process

Answer 3

Input test data—>[System]—–> Output test results

Question 4

what doe V&V stand for?

Answer 4

Verification and Validation

Question 5

What is Verification ?

Answer 5

“Are we building the product right”.
It means the software should conform to its specification.

Question 6

What is Validation?

Answer 6

“Are we building the right product”.
It means the software should do what the user really wants

Question 7

What is the goal of V&V?

Answer 7

It’s to establish confidence that the system is
‘fit for purpose’.

Question 8

What does the confidence of **V&V **depend on?

Answer 8

1)Software’s purpose, 2)user expectations and
3)marketing environment

Question 9

what is Software INSPECTION?

Answer 9

inspections involve people examining the source representation with the aim of discovering ANOMALIES and DEFECTS.

Question 10

what are ADVANTAGES of INSPECTION?

Answer 10

 Due to inspection being a static process, you don’t have to worry about errors hiding each other
 Incomplete versions of a system can be inspected
without additional costs.
 other that error detection, Inspection can also check compliance with standards, portability
and maintainability.

Question 11

Name stages of testing:

Answer 11

1. Development testing
2. Release testing
3. User testing.

Question 12

what stages does Development testing include :

Answer 12

1.Unit testing
2. Component testing
3. System testing

Question 13

what is Unit testing?

Answer 13

It’s testing individual components in isolation.

It is a defect testing process.

Question 14

What does Unit testing check?

Answer 14

1) Individual functions
2)Object classes
3) Composite components

Question 15

what parts does the automated test have?

Answer 15

1. A setup part
2. A call part
3. An assertion part

Question 16

what is TDD?

Answer 16

Test-driven development - The code is developed incrementally, along with a test for that increment. You don’t move on to the next increment until the code that you have developed passes its test

Question 17

what are steps of TDD?

Answer 17

1. Identifying the increment of functionality
2. Write a test
3. Run the test
4. Implement the functionality and re-run the test.
5. Move to the next chunk

Question 18

what are advantages of TDD?

Answer 18

1. Code coverage
2. Regression testing
3. Simplified debugging
4. System documentation.

Question 19

what is Regression testing?

Answer 19

It’s testing the system to check that new changes have not ‘broken’ previously working code.

Question 20

What is Release testing?

Answer 20

It is the process of testing a particular release of a system that is intended for use outside of the development team.

Question 21

what is User Testing?

Answer 21

testing process in which users or customers provide input and advice on system testing.

Question 22

what are types of User testing?

Answer 22

1. Alpha
2. Beta
3. Acceptance

Question 23

what is Alpha testing in User testing?

Answer 23

users of the software work with the development team to test the software at the developer’s site.

Question 24

what is Beta testing in User testing?

Answer 24

a release of the software is made available to users to allow them to experiment and to raise problems that they discover with the system developers.

Question 25

what is Acceptance testing in User testing?

Answer 25

customers test a system to decide whether or not it is ready to be accepted from the system developers and deployed in the customer environment.