{"id":1060,"date":"2021-07-31T18:28:24","date_gmt":"2021-07-31T18:28:24","guid":{"rendered":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/2021\/07\/31\/advance-cypress-interview-questions-part-3\/"},"modified":"2021-07-31T18:28:24","modified_gmt":"2021-07-31T18:28:24","slug":"advance-cypress-interview-questions-part-3","status":"publish","type":"post","link":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/2021\/07\/31\/advance-cypress-interview-questions-part-3\/","title":{"rendered":"Advance Cypress Interview Questions \u2013 Part 3"},"content":{"rendered":"

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Table of Contents<\/div>\n<\/p><\/div>\n<\/div>\n<\/div>\n

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19. What is after:run event in cypress?<\/a><\/div>\n

20. What is cy.task() functions in Cypress?<\/a><\/div>\n

21. What is cy.exec() function in cypress?<\/a><\/div>\n

22. How can I read file in Cypress?<\/a><\/div>\n

23. How can I write a file in cypress?<\/a><\/div>\n

24. How can I run the tests \/ test suites only on specific browser without doing configuration file Changes?<\/a><\/div>\n

25. What are the reporters cypress supports?<\/a><\/div>\n

26. What is retry in cypress? How can I change the behaviour?<\/a><\/div>\n

27. How can I run the tests in headless mode?<\/a><\/div>\n

28. How can I debug in Cypress?<\/a><\/div>\n<\/div>\n

<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

This post is a continuation of\u00a0 Advance Cypress Interview Questions \u2013 Part 2\u00a0<\/a>for any QA Automation interview.\u00a0<\/p>\n

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19. What is after:run event in cypress?<\/a><\/h3>\n
after:run<\/strong> event is executed after all the test completed in cypress, This is very useful when you want to generate reports or collate\/merge the reports. This after:run<\/strong> typically used in plugin files.<\/p>\n
Example: <\/strong><\/p>\n<\/div>\n
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module.exports = (on, config) => {<\/p>\n
on(‘after:run’, async () => {<\/p>\n
await exec(“npx jrm .\/cypress\/reports\/junitreport.xml .\/cypress\/reports\/junit\/*.xml”);<\/p>\n
});<\/p>\n
}<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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20. What is cy.task() functions in Cypress?<\/a><\/h3>\n
cy.task()<\/strong> is the powerful command in cypress which helps to create some set of actions outside the scope of cypress. You can execute any node commands using the task. There are lot of things we can do with the cy.task()<\/strong> below is just one example.<\/p>\n
Example:<\/strong><\/p>\n
Problem: cy.log()<\/strong> doesn\u2019t work if you are running cypress CLI<\/strong>, we can\u2019t use console.log()<\/strong> directly on our cypress framework to fix this issue we can take a help of task.<\/p>\n
Inside plugin\/index.js you can write some code like below.<\/p>\n<\/div>\n
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on(‘task’, {<\/p>\n
log (message) {<\/p>\n
console.log(message)<\/p>\n
return null<\/p>\n
}<\/p>\n
})<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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And once you write the above code you can call this in your script like below.<\/p>\n<\/div>\n
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describe(‘Demo’, () => {<\/p>\n
it(‘HTML DOM’, () => {<\/p>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 cy.task(‘log’, ‘This will be output to the terminal’);<\/p>\n
});<\/p>\n
});<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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21. What is cy.exec() function in cypress?<\/a><\/h3>\n
cy.exec ()<\/strong> is used to run the system command.<\/p>\n
Example:<\/strong><\/p>\n<\/div>\n
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cy.exec(‘npm run build’)<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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22. How can I read file in Cypress?<\/a><\/h3>\n
Cypress provides inbuild readfile capability cy.readFile() can be used for this purpose<\/p>\n
Example:<\/strong><\/p>\n
Consider I have .json file like this<\/strong><\/p>\n<\/div>\n
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{<\/p>\n
\u00a0 “name”:”somename”<\/p>\n
}<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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I can read the above file in cypress like below<\/strong><\/p>\n<\/div>\n
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cy.readFile(‘data.json’).then((d)=>{<\/p>\n
cy.log(d.name); \/\/prints somename<\/p>\n
})<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Cypress supports types if line including text, json, yaml, mp3 etc.<\/p>\n
23. How can I write a file in cypress?<\/a><\/h3>\n
Cypress provides inbuild writefile capability cy.writeFile() can be used for this purpose<\/p>\n<\/div>\n
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cy.writeFile(‘data.json’, { fname: ‘something’, lname: ‘example’ })<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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after execution of above command data.json will have below entry:<\/p>\n<\/div>\n
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{<\/p>\n
“fname”: “something”,<\/p>\n
“lname”: “example”<\/p>\n
}<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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24. How can I run the tests \/ test suites only on specific browser without doing configuration file Changes?<\/a><\/h3>\n
Cypress provides option to specify the browser name on test suites or testcase level.<\/p>\n
There are two options:<\/strong><\/p>\n
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Using {browser: ‘<browser_name>’}<\/li>\n
Using Cypress.isBrowser(‘<browser_name>’))<\/li>\n<\/ol>\n
Option 1:<\/strong> {browser:<browser_name>} option can be used to execute the test cases or testuites at browser level<\/p>\n
Example: Run test suite if its only chrome<\/strong><\/p>\n<\/div>\n
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describe(‘Google Navigation’, { browser: ‘chrome’ }, () => {<\/p>\n
it(‘Google Search’, () => {<\/p>\n
\/\/some code<\/p>\n
})<\/p>\n
})<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Example: Run Test cases if its any browser except firefox<\/strong><\/p>\n<\/div>\n
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describe(‘Google Navigation’, () => {<\/p>\n
it(‘Google Search’, { browser: ‘!firefox’ }, () => {<\/p>\n
\/\/some code<\/p>\n
})<\/p>\n
})<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Option 2:<\/strong> Using Cypress.isBrowser(‘<browser_name>’))<\/p>\n
Example<\/strong>: Run if its Firefox<\/p>\n<\/div>\n
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it(‘Example’, () => {<\/p>\n
if (Cypress.isBrowser(‘firefox’)) {<\/p>\n
\u00a0\u00a0\u00a0 \/\/Some code<\/p>\n
\u00a0 }<\/p>\n
)}<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Example: <\/strong>If its other than chrome<\/p>\n<\/div>\n
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it(‘Example’, () => {<\/p>\n
\u00a0 \/\/ true when running in Firefox, etc…<\/p>\n
\u00a0 if (Cypress.isBrowser(‘!chrome’)) {<\/p>\n
\u00a0\u00a0 \/\/some code<\/p>\n
\u00a0 }<\/p>\n
})<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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25. What are the reporters cypress supports?<\/a><\/h3>\n
By default, Cypress uses the spec reporter to output information to STDOUT. However since cypress built on mocha we can use all available mocha reporters including Junit, Teamcity etc.<\/p>\n<\/div>\n
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26. What is retry in cypress? How can I change the behaviour?<\/a><\/h3>\n
Cypress automatically retries all the command which will query the DOM element for 4 seconds.<\/p>\n
If we want to increase re-try timeout then we need to configure defaultCommandTimeout<\/strong> parameter either in cypress.json or should pass it in cypress CLI<\/p>\n
Example: <\/strong><\/p>\n
cypress.json<\/strong><\/p>\n<\/div>\n
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{<\/p>\n
“defaultCommandTimeout”:30000,<\/p>\n
}<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Command line:<\/strong><\/p>\n<\/div>\n
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cypress run –config defaultCommandTimeout=10000<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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27. How can I run the tests in headless mode?<\/a><\/h3>\n
Cypress support headless mode, we can pass it as command line parameter<\/p>\n
Example:<\/strong><\/p>\n<\/div>\n
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cypress run –headless –browser chrome<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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28. How can I debug in Cypress?<\/a><\/h3>\n
Cypress provides two way to debug the tests.<\/p>\n
Using cy.pause()<\/p>\n
Using .debug<\/p>\n
Option 1:<\/strong> Using cy.pause<\/p>\n
When we use the cy.pause()\u00a0 to pause the execute, we can do intended action\u00a0 manually and we can continue next<\/p>\n
Example:<\/strong><\/p>\n<\/div>\n
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cy.visit(‘https:\/\/www.google.com’)<\/p>\n
cy.pause() \/\/pauses the execution here<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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we can also use pause command by chaining off with other command<\/p>\n
Example:<\/strong><\/p>\n<\/div>\n
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cy.get(‘nav’).pause()<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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Option 2:<\/strong> Using .debug<\/p>\n
To use this command we need to open the developer tools, This will set at debug point and it will pause the execution in that point<\/p>\n<\/div>\n
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cy.visit(‘https:\/\/www.google.com’)<\/p>\n
cy.debug() \/\/pauses the execution here<\/p>\n<\/div>\n<\/div>\n<\/div>\n
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we can also use debug command by chaining off with other commands<\/p>\n<\/div>\n
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cy.get(‘nav’).debug ()<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
<\/div>\n<\/section>\n
<\/body><\/html><\/p>\n","protected":false},"excerpt":{"rendered":"
Table of Contents 19. What is after:run event in cypress? 20. What is cy.task() functions in Cypress? 21. What is cy.exec() function in cypress? 22. How can I read file in Cypress? 23. How can I write a file in cypress? 24. How can I run the tests \/ test suites only on specific browser […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,4],"tags":[],"class_list":["post-1060","post","type-post","status-publish","format-standard","hentry","category-cypress","category-interview-questions","post-wrapper","thrv_wrapper"],"_links":{"self":[{"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/comments?post=1060"}],"version-history":[{"count":0,"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/posts\/1060\/revisions"}],"wp:attachment":[{"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/media?parent=1060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/categories?post=1060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rahulshettyacademy.com\/blog\/index.php\/wp-json\/wp\/v2\/tags?post=1060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}