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Protractor Interview Questions and Answers

Are you hunting for the top protractor interview questions 2022 that will help you crack the Protractor job interview? Are you looking for a promising career in Software Testing? If yes, you've hit the right spot. This article is a guide to the latest Protractor Interview questions that will expand your chances to grab your dream job. 

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Protractor is a testing tool used in the field of Automation and was created by a Google team using WebDriverJS and current technologies like Selenium, Node.js, and Jasmine to make creating tests a breeze.

Modern Businesses are looking for enhanced development and testing processes to deliver excellence as the demand for high-end software on the web and mobile platforms grows. Frameworks like Protractor can help with this, as their compatibility with Selenium allows for end-to-end testing. 

Before starting with the Protractor interview questions, we would like to lay in front of you some interesting facts:

  1. The Protractor is being increasingly used in industries like Construction, Education, and Industrial.
  2. Protractor holds a market share of 0.09% and the top three competitors are CodePen, Cypress.io, and BrowserStack.
  3. Protractor professionals can earn between INR 10 Lakhs to INR 50 Lakhs per annum. 

Don’t the above points motivate you to mark a name as a Protractor professional? This post provides the top Protractor interview questions and answers for both freshers and experts. 

We have categorized Protractor Interview Questions - 2022 (Updated) into two levels they are:

Top 10 Frequently Asked Protractor Interview Questions

1. What is Protractor all about?

2. What are the key features of Protractor?

3. What is Selenium Protractor?

4. What is the IDE for Protractor?

5. The difference between Protractor vs. Selenium?

6. What Are ElementFinder And ElementArrayFinder?

7. What are Jasmine and Mocha? 

8. How to install Protractor on Windows?

9. How will you set up a project in Protractor?

10. Can you select a checkbox using Protractor?

Protractor Interview Questions and Answers for Freshers

1. What is Protractor all about?

Ans: Protractor is an end-to-end open-source software testing framework for Angular and AngularJS applications. Google has developed this tool. In place of Angular Scenario Runner, we can use Protractor. It works in between of WebDriver Js and Jasmine layers.

It also functions as a solution integrator that combines powerful technologies such as NodeJS, Selenium, Jasmine, WebDriver, Cucumber, Mocha, etc. It allows us to test our application like a real user because it tests using a real browser.

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2. What are the key features of Protractor?

Ans:

  • It works like a wrapper around WebDriverJS.
  • It offers a new locator and functions for doing automation testing.

3. What is Selenium Protractor?

Ans: Protractor is a wrapper around Selenium Webdriver that offers Automation; take a look at the framework, which simulates user interaction with an Angular web application for a number of browsers and mobile devices.

It presents all functions of Selenium WebDriver alongside Angular-particular functions for seamless end-to-give-up testing.

4. What is the IDE for Protractor?

Ans:

  • Visual Studio
  • CodeSublime
  • TextAtom Editor
  • Brackets
  • Eclipse

5. The difference between Protractor vs. Selenium?

Ans: Here are the simple factors of variations among Selenium and Protractor:

Baseline Selenium Protractor
Supported Front End Technology-Based Web Application Supports all the front stop generation Specially designed for Angular and AngularJS packages
Supported Languages C#, Java, Haskell, Perl. PHP, JavaScript, Objective-C, Ruby, Python, R JavaScript and TypeScript.
Browser support Chrome, Firefox, Internet Explorer ( IE), Microsoft Edge, Opera, Safari,  HtmlUnitDriver Chrome, Firefox, Internet Explorer ( IE), Microsoft Edge, Safari
Synchronization or Waiting Synchronization or Waiting Does now no longer assist automated synchronization among exams and applications. Instead, it desires to be explicitly synchronized with the use of one-of-a-kind waits. Supports Automatic look forward to Angular packages; however, they're no longer relevant for Non-angular packages. But you may explicitly synchronize waits in Protractor.
Supported Locators Strategies Supports not unusual place locator techniques like Id, className, name, linkText, tagName, partial hyperlink text, XPath, and CSS  for all internet packages Supports not unusual place locator techniques like Id, className, name, linkText, tagName, partial hyperlink text, XPath, and CSS  for all internet packages plus it additionally helps angular precise locator techniques consisting of version, repeater, binding, buttonText, option, etc. additionally allows the introduction of custom locators.
Supported test frames  

Based on language binding, it helps diverse Test Frameworks C#- NUnit,

Java- JUnit, TestNG

Python- PyUnit, PyTest, JavaScript- WebDriverJS, WebDriverIO

The rapporteur helps Jasmine and Moka. The Protractor is supplied with Jasmine as a default framework.
Support for BDD Yes. (Serenity, Cucumber, JBehave, etc.). Yes. Mocha,  Jasmine, Cucumber, and Serenity/JS
Managing browser drivers  Requires third-celebration equipment like  Webdriver Manager to sync browser model and driving force. Requires internet driving force-supervisor CLI to automated sync among browser models and driving force for Chrome and Firefox.
Parallel Testing Parallel testing Requires third-party equipment such as TestNG.  Supports parallel testing.
Cost Open-source Open-source
Ease to automate Angular Applications Not easy; a number of sync problems, and hard to discover actual wait conditions. It is made for angular packages; for this reason, it is simple to automate Angular Applications
Test Execution Speed Slower Faster
CI/CD integration Yes Yes
Docker Support Yes Yes
Debugging Easy Difficult

6. What Are ElementFinder And ElementArrayFinder?

Ans:

ElementFinder: The ElementFinder practically shows a single Element Array Finder (and similar to a single object). To build up a chain of locators, we can use ElementFinder.

ElementArrayFinder: For an array elements, you can use ElementArrayFinder(alternately a single detail). For example, the ElementArrayFinder helps to install the sequential terms belonging to an array of elements. 

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7. What are Jasmine and Mocha? 

Ans:

Jasmine: This represents a substructure, for example, Junit (Java) and Unit Test (Python). This is a mix of various functions, and it's a far better default framework while executing in Protractor. 

Mocha: It is used in the JavaScript framework for mainly doing Node.Js programming. Many developers will be puzzled the same by Jasmine as a check framework. However, it offers you different abilities than other software test frameworks.

8. How to install Protractor on Windows?

Ans: You can use the following commands to install Protractor on windows:

Use npm to install Protractor globally with:

npm install -g Protractor

9. How will you set up a project in Protractor?

Ans: You can easily set up a project in Protractor, so your machine must have node.Js runtime mounted. The npm helps node.Js which you can use easily. 

npm i -g protractor or

npm deploy -g Protractor

This command installs each Protractor and Web cause force-Manager. Once Protractor is established, you can test the version using

Protractor -model

Once Protractor runs, we can use Chrome Driver or the Gecko Driver for running the browser.

After completion, you can start the software setup for your project. The related process needs to note down- create a file using the spec.Js document and for config use the conf.Js file.

10. Can you select a checkbox using Protractor?

Ans: You can use this syntax to select a checkbox-

element(by. model('attribute.name')). click();

Related Article: AngularJS Tutorial for Beginner

11. What are a few locators available in Protractor?

Ans: Few locators available in Protractor are as follows:

  • by.className
  • by.id
  • by.CSS
  • by.linkText
  • by.name
  • by.partialLinkText
  • by.tagName
  • by.xpath

12. How to getText on input in Protractor?

Ans: To get a text on an input in the Protractor, you can use:

 getText() function.

13. What is the function of a Cucumber in a Protractor?

Ans: You can use cucumber by updating the framework with the path.

14. How to select an option from the dropdown in protractor e2e testing?

Ans: You can select an option from the dropdown in Protractor e2e testing with the following step:

  • Find the "dropdown using the element."
  • Click the dropdown.
  • Click the required option.

15. How to set default browser window size in Protractor/ WebdriverJs:?

Ans: You can use the following code to set the default window size in 

Protractor/WebdriverJs: browser.executeScript('window.moveTo(0,0);' + 'window.resizeTo(screen.width, screen.height);');

16. How can I get using a Protractor the current URL in testing?

Ans: The current URL will come in Protractor by using this syntax: 

browser.getCurrentUrl() as follows: expect(browser.getCurrentUrl()).toEqual("expectedUrl");

17. How can we set the value to prompt Alert in Protractor?

Ans: We can use the syntax; sendKeys() command 

18. How to create promises in Protractor?

Ans: With the help of the following syntax, you can create a promise in Protractor:

var deferred = protractor.promise.defer();
var promise = deferred.promise;

19. What do you know about max instances in Protractor?

Ans: MaxInstances in Protractor is the number of browser instances that can run in parallel for the set of capabilities.

20. What files need to be set up for the test case in Protractor?

Ans: We need two files to run:

Configuration file: The configuration file is the only one that tells Protractor where to discover the check files (specs)/which browser to pick/which framework to use (Jasmine/Mocha)/where to speak for your Selenium browser and other configurations. If any configuration isn't described in configuration files, it'll use defaults.

Spec file: Spec file is the only where we write our real code. All of our purposeful flow/assertions might be on this particular report. There are probably numerous spec files primarily based totally on the wide variety of taking a look at instances; however, simply one spec report might be capable of running the complete take a look at the suite of numerous specs.

Protractor Interview Questions and Solutions for Experienced

21. What does direct-connect do in Protractor?

Ans: If you set direct connect: true in your config file, your test script will communicate directly with Chrome Driver or Firefox Driver. The use of directly connecting to browser drivers is that your test scripts may begin to run faster.

22. What mouse actions are available in Protractor?

Ans: Mouse actions that can be performed using Protractor are:

  • click(element)
  • doubleClick(element)
  • contextClick(element)
  • mouseDown(element)
  • mouseUp(element)
  • mouseMove(element)
  • mouseMove(element, long xOffset, long yOffset)
  • dragAndDrop()

23. How can you verify tooltip text using Protractor?

Ans: You can verify tooltip text using Protractor; we need to fetch the value of the 'title' attribute. 

24. What is a Timeout test in Protractor?

Ans: The timeout test is the time allotted for performing unit testing. The protractor discontinues further testing if the unit test fails to meet the specified time limit and marks it as a failure. 

25. Can you How bring out CSS attributes from Protractor?

Ans: To extract the CSS attribute of an element in Protractor, grtCSSValue can be used.

Related Article: Advanced AngularJS Interview Questions & Answers

26. How to switch between frames using Protractor?

Ans: To have your web driver script switch between different frames, you can use the following code:

27. What's the basic difference between "GET" and "NAVIGATE"?

Ans: Get method loads a page or gets the page source or gets a text. 

On the other hand, navigate method allows functions like refresh, back, and forward. 

28. Can we set global variables in Protractor?

Ans: It is possible to set global variables using parameters present in the config file that can be accessed in the specs using:

browser.params.glob.

29. How to set the gecko driver path in Protractor?

Ans: GeckoDriver location finds the geckodriver.exe file. This gets passed to the Selenium jar as the system property.webdriver.gecko.driver. 

30. What is an XPath?

Ans: XPath is one of those locators that are supported by Protractor and is a query language for selecting nodes from XML documents. 

31. How can we run the headless browser mode in Protractor?

A headless browser mode means running web applications without a graphical user interface. Instead, the applications will get executed through commands via a command-line interface. In headless browser mode, the Protractor executes the tests in the background. 

32. Explain about group index in XPath?

Ans: When we search for an element with the XPath index, we might get more than one element that is under different parents. The group index places all the resulting element matches into a list and gives indexes for them. The group index numbers start with 1. 

33. Can we perform drag and drop in Protractor? If yes, write the code for it?

Ans: Yes, we can implement drag and drop in Protractor using actions(). Here is the code for it. Syntax:

browser.actions().dragAndDrop(Element,Target).mouseUp().perform();

34. What are the types of failure in Protractor?

Ans: 

  • WebDriver unexpected failure
  • WebDriver failure
  • Protractor Angular2 failure
  • Protractor failure for Angular
  • Expectation failure
  • Protractor failure for timeout

35. What does ignoring synchronization do?

Ans: In Protractor, while running tests, this is a common problem when the Protractor execution starts, but the Angular code is still trying to synchronize the $http or $timeout requests. So set the browser. Ignoring synchronization actually means that we're telling Protractor not to wait for the Angular promises to be resolved.

Related Article: Learn What is Angularjs?

36. What are the various timeouts in Protractor?

Ans: Since Protractor tests are asynchronous and it relies on a lot of components, there are various reasons for which timeouts can occur in Protractor tests.

This may include:

  • Timeout is due to waiting for the page to load.
  • Timeout is due to failing to wait for Angular.
  • Timeout is due to waiting for Angular on page Load.
  • Timeout due to no action performed in the script.
  • Timeout due to Jasmine.
  • Timeout from SauceLabs (if using with SauceLabs).

37. Tell me the best reporter name which works inside of Protractor?

Ans: The best reporter is Chercher-tech-jasmine-reporter is a more suitable report for the Protractor and Jasmine jointly.

38.  How a Textarea Element works?

Ans: Textarea doesn't have much difference from the text bar, so we can handle it like a normal text box/text bar element.

39. Tell me how can you check the ToolTip Text inside Protractor?

Ans: There are different attributes in web components like 'title.' If we bring the data from this attribute, By fetching the value of the 'title' attribute, then need to check the tooltip text in Protractor.

Most Common Protractor FAQs

1. What are the frameworks that can be used with the Protractor?

Ans: The Protractor can be used easily with the default framework, named Jasmine 2.0. However, anyone can also use frameworks like mocha, Cucumber JS, Serenity, etc. 

2. Can I use typescript with Protractor?

Ans: Absolutely Yes. It can be used with TypeScript. 

3. How can I insert a custom locator in Protractor?

Ans: You can use the upload Locator to insert the custom locator in Protractor. 

4. What are the prerequisites setups for running the Protractor?

Ans: The perquisites are JDK, Web Driver (selenium standalone jar record), and browser.

5. What are the different kinds of Locators in Protractor?

Ans: Apart from the standard locator mechanism that is Selenium, Protractor also has a few Angular JS locators.

6. In non-Angularjs apps, shall I use Protractor?  

Ans: Definitely, you can go with Protractor. Protractors may be used for finding out non-Angularjs or non-Angular apps.

7. How to insert something in the Protractor?

Ans: In general, most of the e2e implementation is in default Jasmine 2.0. You can use this e2e implementation to insert something in Protractor. 

8. How Can I do reporting in Protractor?

Ans: The Protractor does not come with any signaling device as a reporter. So, for example, you can use Allure with Jasmine 2.0 with Protractor and Mocha with Cucumber, particularly for reporting.

9. What is the standard fail time for a Jasmine spec reporter, and can I change it?

Ans: By default, any spec in Protractor will fail after 30 seconds. Yes, this timeout duration can be configured to be superior or changed.

10. How to create more specs in Protractor?

Ans: In order to run more than one spec document in Protractor, you need to do it in the spec flag in an array. E.g., say you've given particular spec files test1_spec.Js and test2_spec.Js so that you can do that like this-

Specs: ['. /test/test1_spec.Js','./test/test2_spec.Js']

This will make Protractor run more than one spec file.

Let's talk about the few Advantages of a Protractor

Protractor is an open-source testing framework that provides the following benefits:

  • This open-source tool is simple to set up or install.
  • Functions well with Jasmine framework for creating the test.
  • Supports TDD (test-driven development).
  • Supports parallel testing via manifold browsers.
  • Comprises automatic waits, which means you don't require adding waits & sleeps to your script explicitly.
  • Provides the entire benefits of Selenium WebDriver and auto-synchronization.
  • Offers remarkable testing speed as compared to other tools.
  • Offers built-in support for Angular.js components like by.repeater, by.exactRepeater,  by.binding, by.model, by.excatBinding, by.options, etc.

Conclusion:

For testers to keep up with the increased demands for faster delivery and maximum software quality, test automation is essential. Using Protractor with Selenium to run automated tests on Angular web apps helps testers to achieve this for Angular web applications, resulting in the construction of better applications in less time with Parallel Execution. As a result, consider prudently when looking for Job Opportunities! We are confident that our efforts will pay off in your quest to ace the Protractor interview and land your dream job.

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Last updated: 27 June 2022
About Author
Madhuri Yerukala

Madhuri is a Senior Content Creator at MindMajix. She has written about a range of different topics on various technologies, which include, Splunk, Tensorflow, Selenium, and CEH. She spends most of her time researching on technology, and startups. Connect with her via LinkedIn and Twitter .