[Solved] What is wrong with this Cypress test snippet?const onToggle = cy.spy(); cy.mount(); cy.get('input[type="checkbox"]').check(); expect(onToggle).to.have.been.calledOnce(); | Cypress

Cypress - Component Testing

What is wrong with this Cypress test snippet?

const onToggle = cy.spy();
cy.mount();
cy.get('input[type="checkbox"]').check();
expect(onToggle).to.have.been.calledOnce();

AUsing check() on non-checkbox input

BUsing parentheses after calledOnce

CSpy should be reset before test

DIncorrect prop name for event handler

Step-by-Step Solution

Solution:

Step 1: Review assertion syntax
calledOnce is a property, so parentheses should not be used.
Step 2: Check usage in code
The code uses calledOnce() which causes an error since calledOnce is a property, not a function.
Final Answer:
Using parentheses after calledOnce -> Option B
Quick Check:
calledOnce is property, no parentheses [OK]

Quick Trick: Do not add parentheses after calledOnce in assertions [OK]

Common Mistakes:

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