Free Jasmine JavaScript for Beginner's Questions and Answers

Question 1

Which of the following is a Jasmine.js substitute?

Accepted Answer

All of the above

Answer

Jasmine is a popular JavaScript testing framework, but there are several other robust alternatives available in the ecosystem. Mocha, Jest, and Tape are all widely used testing frameworks that provide similar functionalities for writing and running JavaScript tests. Each has its own philosophy and features, catering to different development preferences and project needs.

Question 2

The __ method is called when each test specification has been completed.

Accepted Answer

AfterEach ()

Answer

The `afterEach()` function in Jasmine is a setup/teardown hook that executes a specified block of code after *each* test specification (`it` block) within its `describe` block has completed. It is commonly used to clean up resources, reset the state, or perform other necessary actions to ensure test isolation and prevent side effects between tests.

Question 3

Are toBeTruthy () and toBeFalse () equivalent?

Accepted Answer

No

Answer

`toBeTruthy()` and `toBeFalse()` are not equivalent matchers in Jasmine; they assert opposite conditions. `toBeTruthy()` checks if a value evaluates to `true` in a boolean context (e.g., non-empty strings, non-zero numbers, objects), while `toBeFalse()` specifically checks if a value is strictly `false`. For example, `0` is `toBeFalsy()` but not `toBeFalse()`.

Question 4

Which of the aforementioned businesses employs Jasmine?

Accepted Answer

All of the above

Answer

Jasmine is a widely adopted JavaScript testing framework used by a diverse range of companies, from large enterprises like Walmart and Accenture to tech-focused companies like GitLab, and various e-commerce platforms. Its popularity stems from its clear syntax, comprehensive features, and ease of integration into different development workflows, making it suitable for projects of all sizes.

Question 5

Is the function It() a global or local function?

Accepted Answer

Global

Answer

The `it()` function in Jasmine, which defines an individual test specification, is a global function. This means it can be called directly anywhere within your test files without needing to be imported or referenced from a specific object. Jasmine injects these core functions into the global scope to simplify test writing.

Jasmine JavaScript Testing Framework Practice Test

Jasmine JavaScript Testing Framework Practice Test

Free Jasmine JavaScript for Beginner's Questions and Answers