What methods are most effective for evaluating the properties you send to offspring elements?

Currently, I'm in the process of testing a component using Vue test utils and Jest. I'm curious about the most effective method to verify that the correct values are being passed to child components through their props.

Specifically, I want to ensure that the "items" attribute is receiving the expected values.

<template>
    <component-1 :items="myItems"/>
</template>

I am aware that Vue test utils' props() can be used to inspect the props, but I'm interested to know if there might be a more optimal approach.

javascriptvue.jstestingjestjs

Answer №1

const wrapperElement = shallowMount(ParentComponent, {
  localVue,
  propsData: {
    ...
  }
})

const childComponentProps = wrapperElement.findComponent(Component1).props()

expect(childComponentProps.items).toEqual(
  expect.arrayContaining([
    {
      itemProperty: 'itemValue'
    }
  ])
)

Absolutely, this approach worked perfectly for me. Since I only needed to test the props passed to the child component, I used shallowMount on the parent component, which mocks the child components but still receives their props. I then used findComponent to target the child component and inspected the props using .props().

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