Returns a WrapperArray of all matching Vue components.
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Arguments:
{Component|ref|name} selector
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Returns:
{WrapperArray} -
Example:
import { mount } from '@vue/test-utils'
import Foo from './Foo.vue'
import Bar from './Bar.vue'
const wrapper = mount(Foo)
const bar = wrapper.findAllComponents(Bar).at(0)
expect(bar.exists()).toBeTruthy()
const bars = wrapper.findAllComponents(Bar)
expect(bar).toHaveLength(1)