Cypress Testing Library
Cypress Testing Library
allows the use of dom-testing queries withinCypress end-to-end browser tests.
- npm
- Yarn
npminstall --save-dev cypress @testing-library/cypress
yarnadd --dev cypress @testing-library/cypress
Usage
Cypress Testing Library
extends Cypress'scy
commands.
Add this line to your project'scypress/support/commands.js
:
import'@testing-library/cypress/add-commands'
You can now use some ofDOM Testing Library
'sfindBy
, andfindAllBy
commands off the globalcy
object.See theAbout queries
docs for reference.
Note: the
get*
queries are not supported because for reasonable Cypresstests you need retryability andfind*
queries already support that.query*
queries are no longer necessary since v5 and will be removed in v6.find*
fully support built-in Cypress assertions (removes the only use-case forquery*
).
With TypeScript
Typings should be added as follows intsconfig.json
:
{
"compilerOptions":{
"types":["cypress","@testing-library/cypress"]
}
}
You can findall Library definitions here.
Examples
To show some simple examples (fromcypress/integration/find.spec.js):
cy.findByRole('button',{name:/Jackie Chan/i}).click()
cy.findByRole('button',{name:/Button Text/i}).should('exist')
cy.findByRole('button',{name:/Non-existing Button Text/i}).should('not.exist')
cy.findByLabelText(/Label text/i,{timeout:7000}).should('exist')
// findByRole _inside_ a form element
cy.get('form')
.findByRole('button',{name:/Button Text/i})
.should('exist')
cy.findByRole('dialog').within(()=>{
cy.findByRole('button',{name:/confirm/i})
})
Cypress Testing Library
supports both jQuery elements and DOM nodes. This isnecessary because Cypress uses jQuery elements, whileDOM Testing Library
expects DOM nodes. When you pass a jQuery element ascontainer
, it will getthe first DOM node from the collection and use that as thecontainer
parameterfor theDOM Testing Library
functions.