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cy.its() no longer waits on undefined #3837

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tnightingale opened this issue Mar 27, 2019 · 3 comments

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@tnightingale
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commented Mar 27, 2019

Current behavior:

cy.its() yields undefined.

cy.window().its('__store__').then((store) => {
    ...
    /* `store` is undefined as value is yielded before my application gets a chance to set `window.__store__ = myStore;` */
});

Desired behavior:

Docs state:

.its() will automatically retry itself until the property exists on the subject.

https://docs.cypress.io/api/commands/its.html#Assertions

Steps to reproduce: (app code and test code)

Interestingly, asserting that the yielded property exists resolves this issue:

cy.window().its('__store__').should('exist').then((store) => {
    ...
    /* `store` is *not* `undefined` 👌 */
});

I suspect all that is required is that the documentation needs to be updated to indicate that by default it will yield undefined unless there's a subsequent command that triggers the retry behaviour/state.

Versions

Cypress 3.2.0
macOS: 10.14.3
Chrome 73

@Bkucera

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commented Mar 27, 2019

Hi @tnightingale thanks for letting us know about this. The PR #3226 was incorrectly targeted at the wrong branch.

We'll revert this in the next release, and will keep the behavior you expect.

The goal of the PR was to allow this to work:

cy.window().its('someProp').should('not.exist')

But we'll keep the default behavior of retrying when undefined

@cypress-bot

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commented Apr 15, 2019

The code for this is done in cypress-io/cypress#3870, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

@cypress-bot

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commented May 17, 2019

Released in 3.3.0.

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