Uncaught Cypress: Return Promise Issue

Current behavior:

I am facing very weird behavior in cypress… I have written a custom command in commands.js file, and using that command in spec file in different it function. The command passes in 1st 2 functions but fails in the third saying Uncaught CypressError: Cypress detected that you returned a promise from a command while also invoking one or more cy commands in that promise.. Although I have never used Promise.

Desired behavior:

The function should behave consistently same.

Steps to reproduce: (app code and test code)

In Spec file:

it('[1]FunctionName', function() {
	……
	……
	cy.filterByItemName(itemName);
}); 

it('[2]FunctionName', function() {
	cy.filterByItemName(itemName);
	……	
	……
    });

it('[3]FunctionName', function() {
	cy.filterByItemName(itemName);
	……	
	……
});

In commands.js file:

Cypress.Commands.add('filterByItemName', itemName => {
	cy.get('.cs-tag-list > .cs-tag-list__input').type('{backspace}' + itemName + '{enter}');
});

Versions

Cypress: 3.3.1 Mac Os

[aexol]

@jennifer-shehane Actually not. I found the real problem with this issue. It fires sometimes when the element is hidden underneath the other element. After many refactor of my own code and keeping up cypress best practices I still had that error.

So the main reason for this is Cypress just throwing this error message in different situations.

To repair this you need to implement more specific errors and find the place where try catch is used to ‘globally’

[jennifer-shehane]

Hey @priyankaghosh1989, I’m pretty sure the suspect code is the code below:

...
cy.get('button.action-btn')
setTimeout(() => {
  cy.get('.csLoaderExplainer').should('not.exist');
}, 60000);
cy.get('.page-item')
...

This is being run completely outside of Cypress’s commands, so this command will be queued at 60 seconds within your test run - which, at that point - who knows what Cypress command is currently running?

I’d suggest reading through some of our core concepts that explain how the commands run here: https://on.cypress.io/introduction-to-cypress#Commands-Are-Asynchronous

Could you explain exactly what you are trying to achieve with the code above in the setTimeout() within the Cypress tests? There is likely a better way to achieve the same results - and prevent the Promise error you are getting.