Testing types

Question 1

Test levels (V shape)

Answer 1

(bottom to top)
Component testing
Integration testing
System testing
Acceptance testing

Question 2

component testing

Answer 2

(bottom)
- searches for defects in and verifies the functioning of software modules, programs and objects
- normally takes place during the coding phase
- includes functional and non functional testing

Question 3

Integration testing

Answer 3

• Takes place between phases
• Performed to expose defects in interactions between integrated components or systems (can front end display info from database)
• Usually performed by developer

Question 4

Typical test objects of integration testing

Answer 4

Performed to expose defects in interfaces and interactions between integrated components and systems
- Sub-system implementation
- Infrastructure
- Interfaces

Question 5

System-level testing

Answer 5

(level up from integration testing)
- Testing behaviour of whole system
- functional and non-functional
- Usually performed by test engineers

Question 6

Acceptance testing

Answer 6

Testing software in respect to user-needs
- Builds confidence/assesses readiness
- Checks if a system satisfies acceptance criteria
- Involves alpha and beta testing
- Usually performed by end users

Question 7

4 key types of testing

Answer 7

1. Functional (testing what the system does, correct to spec)
2. Non-functional (testing how the system behaves, adheres to behaviours
3. Structural (Testing structure/architecture, making sure the components operate correctly
4. Change-based (Re-testing and regression testing, ensure changes dont introduce new defects)

Question 8

Functional testing

Answer 8

What the system does - the external behaviour
- does it meet the requirements specification
- Checking for other use cases
- Experiential (testing for common mistakes)
- referred to as blackbox testing
- also includes security and interoperability

Question 9

Black box testing

Answer 9

only concerned with external behaviour
- applicable to all V levels

Question 10

Non-functional testing

Answer 10

How the system works (quality of system itself)
Applicable to all levels of the software testing process

Question 11

Types of non-functional testing

Answer 11

• Performance testing
• Load testing
• Stress testing
• Usability testing
• Maintainability testing
• Portability testing

Question 12

Performance testing