Discuss Scrum PSD Exam Topic 1 Question 90

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

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

Suggested Answer: A, E

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.

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22 comments · newest first

Vallie 2 days ago

B sounds tempting, but it's not really true.

Kimbery 7 days ago

E is crucial for isolating components.

Minna 12 days ago

Agreed! A helps emulate behavior effectively.

Patti 18 days ago

I think A and E are the best reasons.

Anthony 23 days ago

I thought mocks were just for simulating behavior, not eliminating code!

Bulah 28 days ago

D) is a bit extreme, TDD can work without mocks.

Kenneth 1 month ago

Wait, B) isn't true, right? We still write some code for mocks.

Leah 1 month ago

Totally agree, isolation is key for testing!

Alishia 1 month ago

A) and E) are spot on!

Christene 2 months ago

I thought TDD could work without mocks, isn't that a thing?

Gilma 2 months ago

B) is misleading, we still write some code for mocks.

Yan 2 months ago

Wait, are they really machine-generated? Sounds sketchy.

Carman 2 months ago

Totally agree, isolating components is key!

Curt 2 months ago

A) and E) are spot on!

Nichelle 2 months ago

I think TDD can be done without mocks, but they definitely make things easier. I’m leaning towards A and E for the answer.

Huey 3 months ago

I feel like we discussed how tight coupling is a bad thing, so option C doesn't make sense to me.

Ciara 3 months ago

I remember something about emulating behavior from option A, but I'm not entirely sure how that works in practice.

Alline 3 months ago

I think using mock objects helps isolate components, like option E mentions. It makes testing more controlled, right?

Arleen 3 months ago

I definitely recall that mock objects help with isolation, so E seems solid, but I’m unsure about A.

Yvette 3 months ago

I feel like B is misleading; mock objects are usually created manually, right?

Paulina 4 months ago

I remember practicing a question like this, and I think isolating components is really important for effective testing.

Tamesha 5 months ago

I think A and E are the right answers, but I'm not completely sure about the wording.

Scrum PSD Exam - Topic 1 Question 90 Discussion