Jasmine JavaScript Testing Framework Jasmine Async Testing 2

Question 1

What does done.fail('reason') do inside a Jasmine async test?

Accepted Answer

Immediately fails the test with the provided reason

Answer

Stops execution without recording a failure

Answer

Causes Jasmine to retry the test

Answer

Logs the reason and continues running

Question 2

Which Jasmine feature allows you to control setTimeout and setInterval in tests?

Accepted Answer

jasmine.clock()

Answer

jasmine.fakeTimers()

Answer

jasmine.mockTime()

Answer

jasmine.timerControl()

Question 3

How do you activate Jasmine's mock clock before a test?

Accepted Answer

jasmine.clock().install()

Answer

jasmine.clock().start()

Answer

jasmine.useFakeTimers()

Answer

jasmine.clock().mock()

Question 4

After installing the Jasmine clock mock, how do you advance time by 1000ms?

Accepted Answer

jasmine.clock().tick(1000)

Answer

jasmine.clock().advance(1000)

Answer

jasmine.clock().run(1000)

Answer

jasmine.clock().skip(1000)

Question 5

What must you do after each test that installed the Jasmine clock mock?

Accepted Answer

Call jasmine.clock().uninstall()

Answer

Call jasmine.clock().reset()

Answer

Call jasmine.clock().restore()

Answer

Call jasmine.clock().stop()

Question 6

What is the recommended way to test a rejected Promise in Jasmine?

Accepted Answer

Both A and B are valid approaches

Answer

Return the Promise with a .catch that calls done.fail()

Answer

Use expectAsync(promise).toBeRejected()

Answer

Use jasmine.rejectPromise(promise)