Uploaded June 2026 | Updated September 2026, 1 week ago
This video shows how to write a custom Chai assertion and use it in the Cypress tests to catch elements overflowing their parent container. Find the full recipe at glebbahmutov.com/cypress-examples and more information about custom Cypress assertions at glebbahmutov.com/cypress-examples/commands/assertions.html
This video shows how to write a custom Chai assertion and use it in the Cypress tests to catch elements overflowing their parent container. Find the full recipe at glebbahmutov.com/cypress-examples and more information about custom Cypress assertions at glebbahmutov.com/cypress-examples/commands/assertions.html






![Chai Nested Property Assertion In Cypress
This video shows a lesser known Chai assertion have.nested.property The assertion works very well with objects and arrays:
cy.wrap({ name: { first: Joe } })
.should(have.nested.property, name.first, Joe)
// array example
cy.wrap([
{ sum: 42 },
{ sum: 101 },
{ sum: { errors: [Invalid operation] } },
]).should(
have.nested.property,
2.sum.errors.0,
Invalid operation,
)
The code examples are at https://glebbahmutov.com/cypress-examples/recipes/lesser-known-chai-assertions.html Chai Nested Property Assertion In Cypress](https://i.ytimg.com/vi/R1u73hgA1_Q/mqdefault.jpg)



