I am trying to use beforeEach() in my cypress test but my dev says that the cypress code gets loaded at once and before each might not functions as its meant to. Is that true ?
It depends on what your expectation is of beforeEach(). But I can tell you how it works. A beforeEach() is indeed loaded at once, but it is performed before each it() in your test. So if your goal is to have the steps in the beforeEach to be executed in every test, than it works exactly as you wish.
Related
I need a solution. I have a lot of spec files with tests and after each of them I use cy.logout command.
I want to avoid write this logout function each time and want it global.
But when I tried add this function in index.js file it was called at the beginning of each test because index.js works perfect only with beforeEach but not with afterEach.
What should I do?
Thanks
[EDIT]
I just find out that problem was provoke by my mistake in code in second test, so the only problem I have with Cypress is that I dont get any information where I made my mistake because Cypress show me that problem is afterEach hook and nothing else.
If you want your logout runs only once for each of your spec file, and not after each of your test within the file, you must use after instead of afterEach.
after(() => {
cy.logout()
})
Using afterEach() or beforeEach() block in support/index.js. Refer below page to run a "global" hook
https://filiphric.com/cypress-basics-before-beforeeach-after-aftereach
I've been using this React CSSTransition component:
http://reactcommunity.org/react-transition-group/css-transition
I'm adding Cypress tests. CSSTransition callbacks such as onExited and onEntered always run when I'm walking through my app in a regular browser (Chrome). But in the version of Chrome being automated by Cypress, these callbacks are either never called or never executed.
I wonder if anyone else has run into this issue, or has some ideas about why it's happening, and how to fix it, or work around it.
It had to do with cy.clock. If you use cy.clock earlier in the test, you need to use cy.tick, or
cy.clock().then((clock) => {
clock.restore()
})
Basically, I want to login once before all my tests in all files are executed.
Should I call my login command in each test file using the before hook or is there any way to do it once before all tests?
Short answer: You can write your login command in a before hook within the supportFile (the file that is loaded automatically before your other spec files). This before hook will run before any of the code in your other test files.
Recommendations: That being said, this approach leaves little flexibility for variation in your individual test files that you may want in the future like:
What if you want to seed the database differently for one test?
What if you want to log in as a different user with different permissions?
What if you need to do something in onBeforeLoad once?
I would recommend just having the login command in a before hook in each individual spec file.
I would also further recommend having your login command in a beforeEach hook to avoid sharing any state in between tests.
describe('Hooks', function() {
before(function() {
// runs once before all tests in the block
})
})
https://docs.cypress.io/guides/core-concepts/writing-and-organizing-tests.html#Hooks
I would login before EACH test because there could be things that happen in a previous test that affects the results of the current test. With a fresh login, you're starting with a clean state every time. If you want to test a "chain" of unrelated actions (action A THEN action B), then write that as a separate test, but have basic functionality in individual tests.
describe('/page'), () => {
beforeEach(() => {
cy.login() // custom command that handles login w/o UI
cy.visit('/page') // go to the page you are testing
})
// tests
})
You should include a beforeEach block in every test file. This block should login and navigate to the page in question.
I would wrap the function to execute in a before block, as others already suggested.
Now, looking at the docs, I would make that happen in the cypress/support/index.js file.
I was at the point where I felt familiar with feature and unit tests in Laravel. But recently I created a new project and discovered Laravel Dusk. After its installation there now also is a Browser directory where I can put my tests in. But now I'm confused, what is the difference between a feature and a browser test? For example where would I put tests like
a_visitor_can_signup()
the_index_page_shows()
the_contact_form_validates()
..
Is browser behavior (interaction) a typical browser test? And would request-like tests like testing endpoints for a HTTP status 200 to ensure nothing is broken at that point be feature tests?
A feature test would be a test, which tests a feature product may have asked for while a browser behavior test would test a specific action.
Feature Test: User can sign up.
Browser Behavior Test: When user clicks the button it submits the form.
Basically, the feature test is the end-to-end test. While the browser behavior test is a unit or integration test testing a single behavior.
In general, you want to have unit tests—each of which test a single behavior. One main reason being maintainability.
For example, if testing a javascript form, you may have behavioral javascript tests like the following:
describe("form#user-profile", function(){
context("when a click event is triggered", function(){
describe("`foo` is called with arguments a, b and c", function(){
expect(foo).to.be.calledWith(a,b,c)
})
})
})
Which will read out as "form#user-profile, when a click event is triggered, foo is called with arguments a, b and c." This in essence is a unit test which tests a "browser behavior"
References
Mocha
Chai
Sinon
I would summarize like this:
If there is javascript involve in the test, use laravel dusk (browser test).
If there is none, stick to feature test.
I'm familiar with python unittest tests where if an assertion fails, that test is marked as "failed" and it moves on to other tests. Jasmine on the other hand will continue through all expects even if the one of them fails. How can I make Jasmine stop processing a test after the first expectation fails?
it ("shouldn't need to test other expects if the first fails", function() {
expect(array.length).toBe(1);
// don't need to check this if the first failed.
expect(array[0]).toBe("foo");
});
Am I thinking about it wrong? I have some tests with lots of expect's and it seems like a waste to show all the stack traces when only the first is wrong really.
#Gregg's answer was correct for the latest version of Jasmine at that time (v2.0.0).
However, since then, this new feature was added in v2.3.0:
Allow user to stop a specs execution when an expectation fails (Fixes #577)
It's activated by adding throwFailures=true to the query string of the runner page, eg:
http://localhost:8000/?throwFailures=true
Jasmine doesn't support failing early, in a single spec. The idea is to give you all of the failures in case that helps figure out what is really wrong in your spec.
Jasmine has stop on failure feature and you can check it here:
https://plnkr.co/plunk/Ko5m6MQz9VUPMMrC
This starts jasmine with oneFailurePerSpec property.
According to the comments of https://github.com/jasmine/jasmine/issues/414 I figured out that 2 solutions exists for this:
https://github.com/radialanalytics/protractor-jasmine2-fail-whale
https://github.com/Updater/jasmine-fail-fast
I just started to use the protractor-jasmine2-fail-whale because it seems to have more features. Although to take screenshots in case of test failures I currently use protractor-jasmine2-html-reporter.
I'm using Jasmine in Appium (a tool to test React Native apps).
I fixed the issue by adding stopSpecOnExpectationFailure=true to Jasmine configs
jasmine v3.8.0 & jasmine-core v3.8.0