Jasmine JavaScript Testing Framework Jasmine JavaScript 5

Question 1

What does `jasmine.stringMatching()` accept as its argument?

Accepted Answer

A string or regular expression to match against

Answer

`jasmine.stringMatching()` accepts either a substring or a RegExp and checks the actual value against it.

Question 2

How do you run only a specific `describe` block in Jasmine while skipping all others?

Accepted Answer

Change `describe` to `fdescribe`

Answer

`fdescribe` (focused describe) causes Jasmine to run only that suite and skip all unfocused specs.

Question 3

What information does `spy.calls.all()` provide?

Accepted Answer

An array of call objects, each with args, object, and returnValue

Answer

`calls.all()` returns an array where each element is a call record containing context, arguments, and return value.

Question 4

Which Jasmine configuration option sets the default timeout for async specs?

Accepted Answer

jasmine.DEFAULT_TIMEOUT_INTERVAL

Answer

Setting `jasmine.DEFAULT_TIMEOUT_INTERVAL` changes the maximum time Jasmine waits for `done` to be called.

Question 5

What does using `and.stub()` on an existing spy do?

Accepted Answer

Resets the spy so it returns undefined and does nothing

Answer

`and.stub()` clears any configured behavior (e.g., callThrough or returnValue) so the spy becomes a no-op returning `undefined`.

Jasmine JavaScript Testing Framework Practice Test