What are two reasons to use mock objects in unit tests?

The correct answer is A. The behavior of a given object can be emulated to the system under test E. Isolating a particular system component for controlled testing. Mock objects are simulating the behavior of dependencies such as persistance layers or APIs. By mocking these you can be sure about what you are testing, and not accidentally testing the external dependency.

Test Driven Development

Question

Options

AThe behavior of a given object can be emulated to the system under test
BThey are machine-generated and eliminate the need to write code by hand
CTo increase tight coupling
DTDD is impossible without them
EIsolating a particular system component for controlled testing

How the community answered

(22 responses)

A
77% (17)
B
14% (3)
C
5% (1)
D
5% (1)

Explanation

Mock objects are simulating the behavior of dependencies such as persistance layers or APIs. By mocking these you can be sure about what you are testing, and not accidentally testing the external dependency.

Topics

#mock objects#test isolation#unit testing#dependency control

Community Discussion

No community discussion yet for this question.

Full PSD Practice