Cypress - check test failure in global afterEach - testing

Is there a possibility to check in global afterEach if test (it) failed?
Such global afterEach is located in support/index.js:
afterEach(() => {
// check if test failed and perform some actions
})

You can use afterEach hook and remain in the scope of the Cypress context (where cy commands are available), for example:
afterEach(function() {
if (this.currentTest.state === 'failed') {
// your code
}
});
Reference: https://github.com/cypress-io/cypress/discussions/15047
Or you can use test:after:run event and switch to node context (where any kind of node code can be executed outside of the scope of Cypress, like accessing database or file system), for example:
Cypress.on('test:after:run', (test, runnable) => {
if (test.state === 'failed') {
// your code
}
});
Reference: https://docs.cypress.io/api/events/catalog-of-events#Cypress-Events

What you seek is the after:spec and is exposed via plug-ins. You'll have access to the spec and the results.
https://docs.cypress.io/api/plugins/after-spec-api#Syntax

Related

Cypress-Cucumber-Preprocessor: Using BeforeAll for specific tags/feature files

According to the Cypress Cucumber Preprocessor docs regarding Before and After hooks:
The cypress-cucumber-preprocessor supports both Mocha's before/beforeEach/after/afterEach hooks and Cucumber's Before and After hooks.
However for some reason it doesn't seem to support the Cucumber's BeforeAll and AfterAll hooks. This is somewhat problematic for me. I'm currently trying to write some API tests that need to use an auth token that can only be obtained by manually logging in to the site first.
Ideally I would like my tests to log in through the UI only once, grab the auth token, and then run all of my API tests using that auth token.
I have all of these API scenarios tagged with #api and would love to be able to use a BeforeAll({ tags: '#api' }, () => { function (or equivalent) to have my Cypress tests log in and grab the auth token for use in those scenarios. However it seems like my only options are:
Use Before instead of BeforeAll (which would force me to login through the UI for every single scenario with the #api tag even though should I only need to do it once)
Use a Background on the feature file (which has the same problem)
Use Mocha's before hook instead of Cucumber's (which unfortunately doesn't support tagging and therefore would run before every feature file, instead of just the ones I have tagged)
Is there no way to replicate the Cucumber BeforeAll functionality with Cypress-Cucumber-Preprocessor?
The way I would approach the problem is to flag the first login in the run, and prevent the login code from running once the flag is set.
let loggedIn = false;
Before(() => {
const tags = window.testState.pickle.tags.map(tag => tag.name)
if (tags.includes('#api') && !loggedIn) {
loggedIn = true
console.log('logging in') // check this is called once
// do the login
}
})
You should also be able to get the same effect by wrapping the login code in a cy.session(), which is a cache that only runs it's callback once per run.
Before(() => {
const tags = window.testState.pickle.tags.map(tag => tag.name)
if (tags.includes('#api')) {
cy.session('login', () => {
console.log('logging in') // check this is called once
// do the login
})
}
})
Update from #rmoreltandem
This syntax is simpler
let loggedIn = false;
Before({ tags: '#api' }, () => {
if (!loggedIn) {
loggedIn = true
console.log('logging in') // check this is called once
// do the login
}
})
with session
Before({ tags: '#api' }, () => {
cy.session('login', () => {
console.log('logging in') // check this is called once
// do the login
})
})

cypress cy.request 401 unauthorized [duplicate]

I want to save/persist/preserve a cookie or localStorage token that is set by a cy.request(), so that I don't have to use a custom command to login on every test. This should work for tokens like jwt (json web tokens) that are stored in the client's localStorage.
To update this thread, there is already a better solution available for preserving cookies (by #bkucera); but now there is a workaround available now to save and restore local storage between the tests (in case needed). I recently faced this issue; and found this solution working.
This solution is by using helper commands and consuming them inside the tests,
Inside - cypress/support/<some_command>.js
let LOCAL_STORAGE_MEMORY = {};
Cypress.Commands.add("saveLocalStorage", () => {
Object.keys(localStorage).forEach(key => {
LOCAL_STORAGE_MEMORY[key] = localStorage[key];
});
});
Cypress.Commands.add("restoreLocalStorage", () => {
Object.keys(LOCAL_STORAGE_MEMORY).forEach(key => {
localStorage.setItem(key, LOCAL_STORAGE_MEMORY[key]);
});
});
Then in test,
beforeEach(() => {
cy.restoreLocalStorage();
});
afterEach(() => {
cy.saveLocalStorage();
});
Reference: https://github.com/cypress-io/cypress/issues/461#issuecomment-392070888
From the Cypress docs
For persisting cookies: By default, Cypress automatically clears all cookies before each test to prevent state from building up.
You can configure specific cookies to be preserved across tests using the Cypress.Cookies api:
// now any cookie with the name 'session_id' will
// not be cleared before each test runs
Cypress.Cookies.defaults({
preserve: "session_id"
})
NOTE: Before Cypress v5.0 the configuration key is "whitelist", not "preserve".
For persisting localStorage: It's not built in ATM, but you can achieve it manually right now because the method thats clear local storage is publicly exposed as Cypress.LocalStorage.clear.
You can backup this method and override it based on the keys sent in.
const clear = Cypress.LocalStorage.clear
Cypress.LocalStorage.clear = function (keys, ls, rs) {
// do something with the keys here
if (keys) {
return clear.apply(this, arguments)
}
}
You can add your own login command to Cypress, and use the cypress-localstorage-commands package to persist localStorage between tests.
In support/commands:
import "cypress-localstorage-commands";
Cypress.Commands.add('loginAs', (UserEmail, UserPwd) => {
cy.request({
method: 'POST',
url: "/loginWithToken",
body: {
user: {
email: UserEmail,
password: UserPwd,
}
}
})
.its('body')
.then((body) => {
cy.setLocalStorage("accessToken", body.accessToken);
cy.setLocalStorage("refreshToken", body.refreshToken);
});
});
Inside your tests:
describe("when user FOO is logged in", ()=> {
before(() => {
cy.loginAs("foo#foo.com", "fooPassword");
cy.saveLocalStorage();
});
beforeEach(() => {
cy.visit("/your-private-page");
cy.restoreLocalStorage();
});
it('should exist accessToken in localStorage', () => {
cy.getLocalStorage("accessToken").should("exist");
});
it('should exist refreshToken in localStorage', () => {
cy.getLocalStorage("refreshToken").should("exist");
});
});
Here is the solution that worked for me:
Cypress.LocalStorage.clear = function (keys, ls, rs) {
return;
before(() => {
LocalStorage.clear();
Login();
})
Control of cookie clearing is supported by Cypress: https://docs.cypress.io/api/cypress-api/cookies.html
I'm not sure about local storage, but for cookies, I ended up doing the following to store all cookies between tests once.
beforeEach(function () {
cy.getCookies().then(cookies => {
const namesOfCookies = cookies.map(c => c.name)
Cypress.Cookies.preserveOnce(...namesOfCookies)
})
})
According to the documentation, Cypress.Cookies.defaults will maintain the changes for every test run after that. In my opinion, this is not ideal as this increases test suite coupling.
I added a more robust response in this Cypress issue: https://github.com/cypress-io/cypress/issues/959#issuecomment-828077512
I know this is an old question but wanted to share my solution either way in case someone needs it.
For keeping a google token cookie, there is a library called
cypress-social-login. It seems to have other OAuth providers as a milestone.
It's recommended by the cypress team and can be found on the cypress plugin page.
https://github.com/lirantal/cypress-social-logins
This Cypress library makes it possible to perform third-party logins
(think oauth) for services such as GitHub, Google or Facebook.
It does so by delegating the login process to a puppeteer flow that
performs the login and returns the cookies for the application under
test so they can be set by the calling Cypress flow for the duration
of the test.
I can see suggestions to use whitelist. But it does not seem to work during cypress run.
Tried below methods in before() and beforeEach() respectively:
Cypress.Cookies.defaults({
whitelist: "token"
})
and
Cypress.Cookies.preserveOnce('token');
But none seemed to work. But either method working fine while cypress open i.e. GUI mode. Any ideas where I am coming short?
2023 Updated on Cypress v12 or more:
Since Cypress Version 12 you can use the new cy.session()
it cache and restore cookies, localStorage, and sessionStorage (i.e. session data) in order to recreate a consistent browser context between tests.
Here's how to use it
// Caching session when logging in via page visit
cy.session(name, () => {
cy.visit('/login')
cy.get('[data-test=name]').type(name)
cy.get('[data-test=password]').type('s3cr3t')
cy.get('form').contains('Log In').click()
cy.url().should('contain', '/login-successful')
})

TestCafe RequestLogger - How to implement for every request in the test framework

We are trying to track down a network issue in our company which causes a Browser Disconnect General Error. I want to use RequestLogger timestamp to help us highlight when this intermittent issue occurs and also any additional request/response information at that time.
In the Request Logger documentation the .requestHooks(logger) is initiated at every test case level. And then console.log(logRecord.X.X) is used to log the record at that specific time.
But how can I have a continuous logging throughout my whole test framework without using console.log(logRecord.X.X) on every line?
Is it somehow possible to have the RequestLogger continuously running via my test-runner function?
if(nodeConfig.util.getEnv('NODE_ENV') == "jenkins-ci")
{
// #ts-ignore
// createTestCafe("localhost", port1, port2).then(tc => {
createTestCafe().then(tc => {
this.testcafe = tc;
this.runner = this.testcafe.createRunner();
return this.runner
.src(testPath)
.filter(filterSettings)
.browsers(environment.browserToLaunch)
.concurrency(environment.concurrencyAmount)
.reporter(reporterSettings)
.run(runSettingsCi);
})
.then(failedCount => {
console.log('Location ' + testPath + ' tests failed: ' + failedCount);
this.testcafe.close();
process.exit(0);
})
.catch((err) => {
console.log('Location ' + testPath + ' General Error');
console.log(err);
this.testcafe.close();
process.exit(1);
});
}
TestCafe doesn't allow attaching request hooks with the test runner class. At the same time, you can attach it to each fixture. RequestLogger will collect information about all requests.
For example:
import { Selector, RequestLogger } from 'testcafe';
const logger = RequestLogger();
fixture `Log all requests`
.page`devexpress.github.io/testcafe`
.requestHooks(logger)
.afterEach(() => console.log(logger.requests));
test('Test 1', async t => {
await t
.click(Selector('span').withText('Docs'))
.click(Selector('a').withText('Using TestCafe'))
.click(Selector('a').withText('Test API'));
});
test('Test 2', async t => {
await t
.click(Selector('span').withText('Docs'))
.click(Selector('a').withText('Continuous Integration'))
.click(Selector('a').withText('How It Works'));
});
Previously, TestCafe allowed you to attach request hooks to one test or fixture at a time. In the new TestCafe v1.19.0, you can also define global request hooks in a JavaScript configuration file .testcaferc.js to attach them to all fixtures and tests within a test run. You can learn more here: Global Request Hooks.
Please note that you can use the configFile option in CLI and program API to specify the path to a config file.
For the initial usage scenario, you can use the following example:
const { RequestLogger } = require('testcafe');
const logger = RequestLogger();
module.exports = {
hooks: {
request: logger,
},
};

Does Jest reset the JSDOM document after every suite or test?

I'm testing a couple of components that reach outside of their DOM structure when mounting and unmounting to provide specific interaction capability that wouldn't be possible otherwise.
I'm using Jest and the default JSDOM initialization to create a browser-like environment within node. I couldn't find anything in the documentation to suggest that Jest reset JSDOM after every test execution, and there's no explicit documentation on how to do that manually if that is not the case.
My question is, does Jest reset the JSDOM instance after every test, suite or does it keep a single instance of JSDOM across all test runs? If so, how can I control it?
To correct the (misleading) accepted answer and explicitly underline that very important bit of information from one of the previous comments:
No. Jest does not clean the JSDOM document after each test run! It only clears the DOM after all tests inside an entire file are completed.
That means that you have to manually cleanup your resources created during a test, after every single test run. Otherwise it will cause shared state, which results in very subtle errors that can be incredibly hard to track.
The following is a very simple, yet effective method to cleanup the JSDOM after each single test inside a jest test suite:
describe('my test suite', () => {
afterEach(() => {
document.getElementsByTagName('html')[0].innerHTML = '';
});
// your tests here ...
});
Rico Pfaus is right, though I found that resetting the innerHTML the way he suggests was too destructive and caused tests to fail. Instead, I found selecting a specific element (by class or id) I want to remove from the document more effective.
describe('my test suite', () => {
afterEach(() => {
document.querySelector(SOME CLASS OR ID).innerHTML = ''
})
})
This is still an issue for many people — and it's the top answer in Google — so I wanted to provide some context from the future ;)
does it keep a single instance of JSDOM across all test runs
Yes, the jsdom instance remains the same across all test runs within the same file
If so, how can I control it?
Long story short: you'll need to manage DOM cleanup yourself.
There is a helpful Github issue on facebook/jest that provides more context and solutions. Here's a summary:
if you want a new jsdom instance then separate your tests into separate files. This is not ideal for obvious reasons...
you can set .innerHTML = '' on the HTML element as mentioned in the accepted answer. That will resolve most issues but the window object will remain the same. Window properties (like event listeners) can persist in subsequent tests and cause unexpected errors.
cleanup the jsdom instance between tests. The jsdom cleanup function doesn't do anything magic — it's basically resetting global properties. Here's an example directly from the Github issue:
const sideEffects = {
document: {
addEventListener: {
fn: document.addEventListener,
refs: [],
},
keys: Object.keys(document),
},
window: {
addEventListener: {
fn: window.addEventListener,
refs: [],
},
keys: Object.keys(window),
},
};
// Lifecycle Hooks
// -----------------------------------------------------------------------------
beforeAll(async () => {
// Spy addEventListener
['document', 'window'].forEach(obj => {
const fn = sideEffects[obj].addEventListener.fn;
const refs = sideEffects[obj].addEventListener.refs;
function addEventListenerSpy(type, listener, options) {
// Store listener reference so it can be removed during reset
refs.push({ type, listener, options });
// Call original window.addEventListener
fn(type, listener, options);
}
// Add to default key array to prevent removal during reset
sideEffects[obj].keys.push('addEventListener');
// Replace addEventListener with mock
global[obj].addEventListener = addEventListenerSpy;
});
});
// Reset JSDOM. This attempts to remove side effects from tests, however it does
// not reset all changes made to globals like the window and document
// objects. Tests requiring a full JSDOM reset should be stored in separate
// files, which is only way to do a complete JSDOM reset with Jest.
beforeEach(async () => {
const rootElm = document.documentElement;
// Remove attributes on root element
[...rootElm.attributes].forEach(attr => rootElm.removeAttribute(attr.name));
// Remove elements (faster than setting innerHTML)
while (rootElm.firstChild) {
rootElm.removeChild(rootElm.firstChild);
}
// Remove global listeners and keys
['document', 'window'].forEach(obj => {
const refs = sideEffects[obj].addEventListener.refs;
// Listeners
while (refs.length) {
const { type, listener, options } = refs.pop();
global[obj].removeEventListener(type, listener, options);
}
// Keys
Object.keys(global[obj])
.filter(key => !sideEffects[obj].keys.includes(key))
.forEach(key => {
delete global[obj][key];
});
});
// Restore base elements
rootElm.innerHTML = '<head></head><body></body>';
});
For those interested, this is the soft-reset I'm using in "jest.setup-tests.js" which does the following:
Removes event listeners added to document and window during tests
Removes keys added to document and window object during tests
Remove attributes on <html> element
Removes all DOM elements
Resets document.documentElement HTML to <head></head><body></body>
— #jhildenbiddle

How to set jasmine for karma e2e for testing angular app?

I try to create e2e tests with karma and jasmine with yeoman. In my karma-e2e.conf.js I add jasmine:
files = [
JASMINE,
JASMINE_ADAPTER,
ANGULAR_SCENARIO,
ANGULAR_SCENARIO_ADAPTER,
'test/e2e/**/*.js'
];
A need async testing so I need to use runs, waits, waitsFor (https://github.com/pivotal/jasmine/wiki/Asynchronous-specs)
But if I try to use it:
it('test', function () {
runs(function () {
...
});
});
Scenatio test runner returns this:
TypeError: Cannot call method 'runs' of null
at runs (http://localhost:8080/adapter/lib/jasmine.js:562:32)
at Object.<anonymous> (http://localhost:8080/base/test/e2e/eduUser.js:42:3)
at Object.angular.scenario.SpecRunner.run (http://localhost:8080/adapter/lib/angular-scenario.js:27057:15)
at Object.run (http://localhost:8080/adapter/lib/angular-scenario.js:10169:18)
I don't know where the problem is. Can you help me please?
Angular e2e tests with Karma don't and can't use the JASMINE adapter. Instead you have the ANGULAR_SCENARIO_ADAPTER which has a similar feel to writing Jasmine tests.
All commands in the adapter's API are asynchronous anyway. For example element('#nav-items').count() doesn't return a number, it returns a Future object. Future objects are placed in a queue and executed asynchronously as the runner progresses. To quote the API docs:
expect(future).{matcher}:
[...] All API statements return a future object, which get a value assigned after they are executed.
If you need to run your own asynchronous test code, you can extend the adapter's DSL, this is easier than it might sound. The idea is that you return your own Future which can be evaluated by a matcher such as toBe(). There are some examples on how to do this in the e2e-tests.js Gist from Vojta. Just remember to call done(null, myRetrunValue); when your test code is successful (myRetrunValue is the value evaluated by your matcher). Or done('Your own error message'); if you want the test to fail.
UPDATE: In response to question below. To simulate a login, first add a function called login to the dsl:
angular.scenario.dsl('login', function() {
return function(selector) {
// #param {DOMWindow} appWindow The window object of the iframe (the application)
// #param {jQuery} $document jQuery wrapped document of the application
// #param {function(error, value)} done Callback that should be called when done
// (will basically call the next item in the queuue)
return this.addFutureAction('Logging in', function(appWindow, $document, done) {
// You can do normal jQuery/jqLite stuff here on $document, just call done() when your asynchronous tasks have completed
// Create some kind of listener to handle when your login is complete
$document.one('loginComplete', function(e){
done(null, true);
}).one('loginError', function(e){
done('Login error', false);
});
// Simulate the button click
var loginButton = $document.find(selector || 'button.login');
loginButton.click();
})
};
});
And then call:
beforeEach( function()
{
expect( login('button.login') ).toBeTruthy();
});