Cypress.automation is rejected but does not show an error

[bahmutov]

Cypress v5.1.0 with Electron browser on Mac

beforeEach(() => {
  // allow downloads in Electron
  Cypress.automation('remote:debugger:protocol',
    { command: 'Page.setDownloadBehavior',
      params: { behavior: 'allow' } })
})

for cypress-io/cypress-example-recipes#560

silently fails and only the DevTools shows an error later in the console

Proposal

If Cypress.automation rejects, fail the test and show the error

[brian-mann]

this is not a command - its just a regular promise and it needs to be returned, and then it'll fail the test. all regular promises work this way.

[brian-mann]

there's a separate issue i opened not too long ago suggesting we tap into the unhandledrejection global event and then possibly fail the test: #8236

it goes way back to another issue i opened years ago: #243

[bahmutov]

Workaround

beforeEach(() => {
  // The next command allow downloads in Electron, Chrome, and Edge
  // without any users popups or file save dialogs.
  if (Cypress.browser.name !== 'firefox') {
    // since this call returns a promise, must tell Cypress to wait
    // for it to be resolved
    cy.wrap(
      Cypress.automation('remote:debugger:protocol',
        {
          command: 'Page.setDownloadBehavior',
          params: { behavior: 'allow', downloadPath: downloadsFolder },
        }),
      { log: false }
    )
  }
})