Chapter 4

Question 1

Describe black box testing.

Answer 1

This is testing that concentrates on inputs and outputs of the test object without reference to the internal structure. It is applicable to functional and non-functional testing.

Question 2

List some black-box testing techniques.

Answer 2

Equivalence partitioning
Boundary Value Analysis
Decision Table Testing
State Transition Testing
Use Case Testing

Question 3

List some white-box testing techniques.

Answer 3

Statement Testing

Decision Testing

Question 4

List some experience-based testing techniques.

Answer 4

Error guessing
Exploratory testing
Checklist-based testing

Question 5

How is coverage measured for Boundary Value Analysis?

Answer 5

The number of boundary values tested divided by total boundary test values.

Question 6

What is another name for black-box techniques?

Answer 6

Specification-based techniques

Question 7

What is another name for white-box techniques?

Answer 7

Structure-based techniques

Question 8

How is coverage measured for Boundary Value Analysis?

Answer 8

The number of boundary values tested divided by total boundary test values.

Question 9

What is statement testing?

Answer 9

This is a structure based technique that exercises potential executable statements and the code.

Question 10

What is decision testing?

Answer 10

This is a structure based technique that exercises code decisions and tests the code that is executed by decision outcomes

Question 11

How is coverage measured for statement testing?

Answer 11

The number of statements executed by the test divided by the total number of executable statements.

Question 12

How is coverage measured for decision testing?

Answer 12

The number of decision outcomes executed by the test divided by the total number of decision outcomes.

Question 13

How can we ensure 100% statement coverage?

Answer 13

100% decision coverage.

Question 14

How can we ensure 100% statement coverage?

Answer 14

By ensuring 100% decision coverage.

Question 15

Name 2 white box testing techniques.

Answer 15

Statement testing

Decision testing

Question 16

List and describe 2 Experience based test techniques.

Answer 16

Error guessing: A list of possible errors anticipated by the tester’s prior knowledge.
Exploratory testing: Dynamically created tests during test execution. This is usually when specifications are deficient or if there is a time pressure on testing.

Question 17

What is a key characteristic of structure based testing techniques?

Answer 17

They are used to measure coverage and design tests to increase coverage.