Adding null as an encoding argument to cy.readFile command results in TypeError

[Zaista]

Current behavior

Adding null as an encoding argument to cy.readFile command results in TypeError: First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.

It seems that null option somehow bypasses the timeout and waiting for file to be downloaded, because as soon as I add 1 sec wait, the command works as expected, and file is read.

Desired behavior

cy.readFile command (with null as encoding argument) should fall back to default timeout of 4 seconds and retry until file is found.

Test code to reproduce

... trigger a download of a file

cy.readFile(pathToFile, null);

Cypress Version

9.5.1

Other

No response

[emilyrohrbough]

@Zaista Thank you for reporting this issues. I was able to reproduce this with this simple example:

it('test', () => {
  cy.readFile('./cypress/fixtures/non-existent-file.json', null)
})

Looking in the code, this appears to be a relatively straight forward fix.

[cypress-bot]

The code for this is done in cypress-io/cypress#20689, but has yet to be released.
We'll update this issue and reference the changelog when it's released.

[cypress-bot]

Released in 9.5.3.

This comment thread has been locked. If you are still experiencing this issue after upgrading to
Cypress v9.5.3, please open a new issue.