New to cypress, but did a couple projects in Protractor and TestCafe.
I'm aware of the controversy using PO's in cypress, but due to the complexity / nature of our app, we're going with it.
Refactoring the test to remove PO's and include the app ID's works. With the page objects, we get the 'requires a DOM element' error.
// myPo.js
class LoginPage {
loginPageCon() {
return cy.get('#page-login');
}
forgotPasswordLnk() {
return cy.get('#forgotPassword');
}
emailTxt() {
return cy.get('#email');
}
forgotPasswordCon() {
return cy.get('#page-forgot-password');
}
}
export default LoginPage;
// myTest.spec.js
import loginPage from '../pageObjects/myPo.js';
const loginPage = new LoginPage();
describe('Authorization', () => {
it('can direct to the azure instance', () => {
cy.visitHome();
cy.get(loginPage.loginPageCon);
});
describe('Forgot Password', () => {
it('clicking forgot password sends you to the correct screen', () => {
cy.get(loginPage.forgotPasswordLnk).click();
cy.get(loginPage.forgotPasswordCon);
});
});
});
You are returning a function reference to cy.get() when you call cy.get(loginPage.forgotPasswordLink).
Change It to:
loginPage.forgotPasswordLink().click()
Your page object is already returning a chainable of cy.get()
Related
I have created Cypress e2e tests that use the following functions:
to mock the responses
export function getUserAndSupplier(): void {
cy.intercept('GET', `${Cypress.env('BaseUrl')}/users/me`,
{
fixture: 'shared/Users/me.json',
})
.as('users');
cy.intercept('GET', `${Cypress.env('BaseUrl')}/users/me/supplier`,
{
fixture: 'shared/Suppliers/supplier.json',
})
.as('supplier');
}
to check if responses are in accordance to the fixtures:
export function checkUserAndSupplier(): void {
cy.wait('#users')
.its('response.body')
.should('not.be.undefined')
.then((interception: any) => {
//assertions on each field
});
cy.wait('#supplier')
.its('response.body')
.should('not.be.undefined')
.then((interception: GetCurrentSupplierResponse) => {
//assertions on each field
});
}
Tests have Cucumber preprocessor implemented, the GIVEN and WHEN steps definition for given test are:
beforeEach(() => {
// intercept user and supplier api
getUserAndSupplier();
// intercept GET /paymentProviders
interceptPaymentProviders();
});
Given('User navigates to the {string} page', () => {
cy.visit('/sell/payment-providers');
// assert api calls on user and supplier
checkUserAndSupplier();
});
When('User clicks on {string} button', () => {
getActivationButton()
.scrollIntoView()
.contains('Activate')
.should('be.visible')
.and('not.be.disabled')
.click();
// Ensure Continue Button is disabled
getContinueButton()
.should('be.visible')
.and('be.disabled');
});
while the .feature file test is:
Scenario: Happy path - activate payment method
Given User navigates to the "sell/payment-providers" page
When User clicks on "activate" button
Then User is able to successfully activate payment provider
The problem is that sometimes, despite having responses mocked using fixtures (they're not null or empty), 'response.body' property is undefined, which makes tests flaky.
At the beginning I thought I have some asynchronous functions that lack await and make response.body being undefined, but this was not the case.
What may be the cause of this? And what makes it sometimes working, and sometimes not?
It's hard to tell what exactly is going on, the code looks ok.
Here's some general tips to try.
Cache
It's possible the browser cache is interfering with the intercept. To avoid caching, add this
beforeEach(() => {
Cypress.automation('remote:debugger:protocol', {
command: 'Network.clearBrowserCache'
})
...
})
Debug call sequence
To debug the network calls, combine the two intercepts and use callbacks to console.log what gets intercepted.
If something is changing the order of response, the problem may be caused by the sequence of cy.wait('#users') followed by cy.wait('#supplier') so combining the intercepts will catch that.
export function getUserAndSupplier(): void {
cy.intercept('/users*', (req) => {
if (req.url.endsWith('/me')) {
console.log('users request', req)
req.alias = 'users'
req.reply({fixture: 'shared/Users/me.json'})
}
if (req.url.endsWith('/me/supplier')) {
console.log('supplier request', req)
req.alias = 'supplier'
req.reply({fixture: 'shared/Suppliers/supplier.json'})
}
})
}
Or use a single alias for both paths and check inside the interception.
export function getUserAndSupplier(): void {
cy.intercept('/users*', (req) => {
if (req.url.endsWith('/me')) {
req.reply({fixture: 'shared/Users/me.json'})
}
if (req.url.endsWith('/me/supplier')) {
req.reply({fixture: 'shared/Suppliers/supplier.json'})
}
})
.as('both')
}
export function checkUserAndSupplier(): void {
const checkInterception = (interception) => {
if (interception.request.url.endsWith('/me')) {
console.log('users response', interception.response)
// assertions for users
}
if (interception.request.url.endsWith('/me/supplier')) {
console.log('supplier response', interception.response)
// assertions for supplier
}
}
cy.wait('#both').then(checkInterception); // first interception
cy.wait('#both').then(checkInterception); // second interception
}
Lastly, something in interceptPaymentProviders() is interfering with the other intercepts.
I was trying to use a condition as a function within a page object.
class Folders {
DropdownCheckFunction(){
cy.get('.more-less-container').then((dropdown) => {
if(dropdown.find('.name').contains('More')){
cy.get('more-less-container').click()
}
else{
console.log('folders are in expanded state')
}
})
}
Drafts(){
this.DropdownCheckFunction()
cy.get('.category-content').find('[title="Drafts"]').click()
.get(".folder-details").should('contain.text', 'Drafts')
}
Issue here is that the page object is getting executed as a test case and is happening before the code in BEFORE hook is being run. Below is the test file code
describe('Testing all cases related to Drafts', () => {
before(() => {
cy.login()
})
})
it('Needs to open the Drafts folder', () => {
openFolder.Drafts()
});
Attaching the error seen on the test runner for reference
The problem is bad formatting.
If you line up your code, you can see it - your test is outside the scope of the before().
describe('Testing all cases related to Drafts', () => {
before(() => {
cy.login()
})
}) // move this bracket to below the `it()`
it ('Needs to open the Drafts folder', () => {
openFolder.Drafts()
});
I have a button on my page, I want to write an e2e test using Protractor. What I want to implement is that when clicking the button, page change to http://localhost:8100/#/booking. How can I implement that?
describe('booking function', function() {
it('should go to booking page', function() {
broswer.get(localHostCruises);
element(by.css('.button.button-stable.button-block')).click();
//sudo code
expect(page change to "http://localhost:8100/#/book" );
})
})
you need to use the browser.getCurrentUrl() method, so something like this:
element(by.css('.button.button-stable.button-block')).click().then(function () {
expect(browser.getCurrentUrl()).toEqual("http://localhost:8100/#/book");
})
You can achieve this with below code.
let targetLocation = 'your/target/location';
browser.get('localHostCruises'); // Login page.
element(by.css('.button.button-stable.button-block')).click(); // click on button.
browser.setLocation(targetLocation);
// If Login takes some time, so wait until it's done.
browser.wait(() => {
return browser.getCurrentUrl().then((url) => {
let isMatch = url.match(targetLocation);
if (isMatch) {
page = new Page; // I assume you writing test cases in page object.
} else {
browser.setLocation(targetLocation);
}
return isMatch;
});
}, 2000, 'Should throw an error message.');
I've got a fairly simple react container component that attempts to call set state in an ajax callback called from componentDidMount. The full error is:
Warning: setState(...): Can only update a mounted or mounting component. This usually means you called setState() on an unmounted component. This is a no-op. Please check the code for the UserListContainer component.
the order of operations from my console.log are:
render
child-render
componentDidMount
ajax-data
[Big ol Error Message]
I started out using async/await but when I received the error I went back to callbacks with the same result. This is the relevant code:
export class UserListContainer extends React.Component<any, any>
{
constructor() {
super();
this.state = {
users: [], request: {}
};
}
//componentDidMount = async () => {
componentWillMount = () => {
console.log('componentWillMount');
//var response: Models.IUserQueryResponse = await Api.UserList.get(this.state.request);
Api.UserList.get(this.state.request).then((response) => {
console.log('ajax-data');
if (response.isOk) {
this.setState({ users: response.data, request: response.state });
}
});
}
render() {
console.log('render');
return <UserList
request={this.state.request}
users={this.state.users}
onEditClick={this.edit}
onRefresh={this.refresh}
/>;
}
Any help would be appreciated.
you cannot set state in componentWillMount because your component could be in a transitioning state.. also it will not trigger a re-rendering. Either use componentWillReceiveProps or componentDidUpdate.
Now that aside your issue is that you are calling setState in the callback from an API request. and the issue with that is you probably have unmounted that component and dont want to setState anymore.
you can fix this with a simple flag
constructor() {
super();
this.state = {
users: [], request: {}
};
this.isMounted = false;
}
componentDidMount(){
this.isMounted = true
}
componentWillUnmount(){
this.isMounted = false;
}
then in your api request you would do this.
Api.UserList.get(this.state.request).then((response) => {
console.log('ajax-data');
if (response.isOk && this.isMounted) {
this.setState({ users: response.data, request: response.state });
}
});
I think is better to use componentWillMount() instead of componentDidMount() cause you want to load the list and then set the state, not after the component was mounted.
I'm using react to retrieve data from parse, manipulate it in my own function, and then update a component in the render.
The problem is that I can't update the state within my own, convoluted function unless I attach a string of bind(this). The entire component looks like this:
React.Component({
getInitialState: function () {
return{
isloading:true
}
},
componentDidMount: function(){
this.myStupidFunction()
},
myStupidFunction : function(){
(
(
(nested parse queries that eventually ...
return an object and set isloading:false).bind(this))
.bind(this))
.bind(this)
},
render: function (){
if (this.state.isloading) {
return(
<Text "...isloading"/>
)
} else {
return(
...actually return important stuff...
)
}
}
})
What is the smarter way to do this? Do I need to really .bind(this) for every nested function?
There are a few ways to maintain the context of your component.
Use ES6 Arrows
If you use ES6 arrows to define your functions. Arrow functions force the inner context of this to be the same as the outer context, regardless of how the function is called.
parse.find({
success: results => {
// this is correct
console.log(this);
}
});
I think this is the most elegant solution, but not all browsers support arrow functions yet.
Use Component Methods
React automatically binds this into each of the top level methods on your component. They are always guaranteed to have the correct context.
onSuccess: function() {
// this is correct
console.log(this);
},
componentWillMount: function() {
parse.find({
success: this.onSuccess
});
}
This is also fairly elegant, in my opinion. It lets React deal with the messiness of context whilst you just write code. However, it can mean that you end up with far too many methods at the top level of your component, so use it sparingly.
As an Argument
Some functions, such as map allow you to optionally pass a context to use as this as a final argument. This allows you to maintain the correct context without .bind(this).
data.map(function() {
console.log(this);
// this is correct
}, this);
This only works for some methods, so it's not really a universal solution.
Alias this
Create a reference to this and use that instead.
var __this__ = this;
parse.find({
success: results => {
// __this__ is correct
console.log(__this__);
}
});
This hack has been around forever in Javascript, but I don't think it's a great way to solve the problem.
Use ES7 Function Bind
For those who like to Javascript on the edge, you could also achieve this using the ES7 function bind syntax proposal — currently implemented in Babel.
parse.find({
success: this::function(results) {
// this is correct
console.log(this);
}
});
This requires using experimental proposal stage features of ES7. You may not want to start using it yet, but it's definitely interesting to be aware of. The value on the left hand side will be bound into the function on the right, as this.
Use a closure at the beginning of the function to capture this. It will be usable in any nested structure. The conventional names for such a closure are self _this and that. I prefer self.
myStupidFunction : function(){
var self = this;
someAsyncCall(1,2, function(result) {
//some nested stuff
anotherAsyncCall(1,2 function(innerResult) {
self.setState(innerResult);
});
});
}
one solution could be using local variable
myStupidFunction:function(){
var that=this
ParseReact.Mutation.Create('Place', {
name: 'New Place',
user: Parse.User.current()
})
.dispatch()
.then(function() {
that.refreshQueries();
});
}
Using ES7 Property Initalizer Syntax, currently implemented in Babel.
The key is the methodName = () => { //method return }
You can read more here.
import React from 'react';
export default class Note extends React.Component {
constructor(props) {
super(props);
this.state = {
editing : false
}
}
render() {
const editing = this.state.editing;
return (
<div>{ editing ? this.renderEdit() : this.renderTask() }</div>
)
}
renderEdit = () => {
return (
<input type="text"
className="edit-input"
autoFocus={true}
defaultValue={this.props.task}
onBlur={this.finishEdit}
onKeyPress={this.checkEnter} />
)
}
renderTask = () => {
const onDelete = this.props.onDelete;
return (
<div onClick={this.edit}>
<span className="task-body">{this.props.task}</span>
{ onDelete ? this.renderDelete() : null }
</div>
)
}
renderDelete = () => {
return (
<button className="delete-btn" onClick={this.props.onDelete}>x</button>
)
}
edit = () => {
this.setState({
editing : true
})
}
checkEnter = (e) => {
if(e.key === "Enter") {
this.finishEdit(e);
}
}
finishEdit = (e) => {
this.props.onEdit(e.target.value);
this.setState({
editing : false
})
}
}
// Note: Sample class from project above.