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/* eslint-env jest */
import { Component } from 'react'
import { getDisplayName } from 'next/dist/shared/lib/utils'
describe('getDisplayName', () => {
it('gets the proper display name of a component', () => {
class ComponentOne extends Component {
render() {
return null
}
}
class ComponentTwo extends Component {
static displayName = 'CustomDisplayName'
render() {
return null
}
}
function FunctionalComponent() {
return null
}
expect(getDisplayName(ComponentOne)).toBe('ComponentOne')
expect(getDisplayName(ComponentTwo)).toBe('CustomDisplayName')
expect(getDisplayName(FunctionalComponent)).toBe('FunctionalComponent')
expect(getDisplayName(() => null)).toBe('Unknown')
expect(getDisplayName('div' as any)).toBe('div')
})
})
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