cypress-io
Unable to assert that a dynamic alias does not exist
Current behavior
CypressError: `cy.get()` could not find a registered alias for: `@bar`.
You have not aliased anything yet.
at $Cy.aliasNotFoundFor (http://localhost:62327/__cypress/runner/cypress_runner.js:132892:66)
at $Cy.getAlias (http://localhost:62327/__cypress/runner/cypress_runner.js:132835:12)
at <unknown> (http://localhost:62327/__cypress/runner/cypress_runner.js:132429:21)
at Object.subjectFn (http://localhost:62327/__cypress/runner/cypress_runner.js:144467:16)
at $Cy.verifyUpcomingAssertions (http://localhost:62327/__cypress/runner/cypress_runner.js:143811:31)
at onRetry (http://localhost:62327/__cypress/runner/cypress_runner.js:144458:15)
at retryQuery (http://localhost:62327/__cypress/runner/cypress_runner.js:144471:10)
at <unknown> (http://localhost:62327/__cypress/runner/cypress_runner.js:144621:17)
at tryCatcher (http://localhost:62327/__cypress/runner/cypress_runner.js:1807:23)
at Promise._settlePromiseFromHandler (http://localhost:62327/__cypress/runner/cypress_runner.js:1519:31)
at Promise._settlePromise (http://localhost:62327/__cypress/runner/cypress_runner.js:1576:18)
at Promise._settlePromiseCtx (http://localhost:62327/__cypress/runner/cypress_runner.js:1613:10)
at _drainQueueStep (http://localhost:62327/__cypress/runner/cypress_runner.js:2411:12)
at _drainQueue (http://localhost:62327/__cypress/runner/cypress_runner.js:2400:9)
at Async._drainQueues (http://localhost:62327/__cypress/runner/cypress_runner.js:2416:5)
at Async.drainQueues (http://localhost:62327/__cypress/runner/cypress_runner.js:2286:14)
From Your Spec Code:
at Context.eval (webpack://cypress-test-tiny/./cypress/e2e/spec.cy.js:34:11)
Desired behavior
cy.get("@bar").should("not.exist"); should pass when there is no alias registered with that name instead of erroring out.
Test code to reproduce
https://github.com/steinybot/cypress-test-tiny/tree/jason/dynamic-alias
/// <reference types="cypress" />
describe('page', () => {
it('works', () => {
cy.intercept(
{
method: "POST",
url: "/test",
},
(request) => {
request.alias = JSON.parse(request.body).name
}
)
const click = () => {
fetch(
"/test",
{
method: "POST",
body: '{ "name": "foo" }',
});
};
cy.get('body').then((body) => {
const button = document.createElement("button")
button.id = "test-button"
button.textContent = "Test"
button.addEventListener("click", click)
body[0].appendChild(button)
})
cy.get('#test-button').click()
cy.wait("@foo").should("exist");
cy.get("@bar").should("not.exist");
})
})
Cypress Version
13.6.1
Node version
v21.2.0
Operating System
macOS 14.1.2 (23B92)
Debug Logs
No response
Other
No response
Workaround is to put this in support/commands.js:
Cypress.Commands.overwriteQuery("get", function (originalFn, aliasOrSelector, options) {
const innerFn = originalFn.call(this, aliasOrSelector, options)
return (subject) => {
try {
return innerFn(subject)
} catch (e) {
if (typeof e.message === 'string' && e.message.startsWith("`cy.get()` could not find a registered alias for:")) {
return undefined
} else {
throw e
}
}
}
}
)
This issue has not had any activity in 180 days. Cypress evolves quickly and the reported behavior should be tested on the latest version of Cypress to verify the behavior is still occurring. It will be closed in 14 days if no updates are provided.
I do not have a test case for this right now but I would be surprised if it was fixed.