[Solved] Consider this Cypress test snippet:const onSubmit = cy.spy(); cy.mount(); cy.get('form').submit(); expect(onSubmit).to.have.been.calledOnce();What is the expected outcome of this test? | Cypress

Cypress - Component Testing

Consider this Cypress test snippet:

const onSubmit = cy.spy();
cy.mount();
cy.get('form').submit();
expect(onSubmit).to.have.been.calledOnce();

What is the expected outcome of this test?

AThe test will pass because the onSubmit spy is called exactly once.

BThe test will fail because the onSubmit spy is never called.

CThe test will fail because the onSubmit spy is called multiple times.

DThe test will pass even if the onSubmit spy is not called.

Step-by-Step Solution

Solution:

Step 1: Setup Spy
The spy onSubmit is created to monitor calls to the submit handler.
Step 2: Mount Component
The Form component is mounted with the onSubmit prop set to the spy.
Step 3: Trigger Event
The form's submit event is triggered using cy.get('form').submit().
Step 4: Assertion
The test asserts that onSubmit was called exactly once with calledOnce().
Final Answer:
The test will pass because the onSubmit spy is called exactly once. -> Option A
Quick Check:
Spy tracks event calls correctly [OK]

Quick Trick: Use spies to verify event handler call counts [OK]

Common Mistakes:

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