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import React from 'react'
import type {
FlightData,
FlightRouterState,
} from '../../../server/app-render/types'
import { applyRouterStatePatchToTree } from './apply-router-state-patch-to-tree'
const getInitialRouterStateTree = (): FlightRouterState => [
'',
{
children: [
'linking',
{
children: ['', {}],
},
],
},
undefined,
undefined,
true,
]
const getFlightData = (): FlightData => {
return [
[
'children',
'linking',
'children',
'about',
[
'about',
{
children: ['', {}],
},
],
['about', {}, <h1>About Page!</h1>],
<>
<title>About page!</title>
</>,
false,
],
]
}
describe('applyRouterStatePatchToTree', () => {
it('should apply a patch to the tree', () => {
const initialRouterStateTree = getInitialRouterStateTree()
const flightData = getFlightData()
if (typeof flightData === 'string') {
throw new Error('invalid flight data')
}
// Mirrors the way router-reducer values are passed in.
const flightDataPath = flightData[0]
const [treePatch /*, cacheNodeSeedData, head, isHeadPartial*/] =
flightDataPath.slice(-4)
const flightSegmentPath = flightDataPath.slice(0, -4)
const newRouterStateTree = applyRouterStatePatchToTree(
['', ...flightSegmentPath],
initialRouterStateTree,
treePatch,
''
)
expect(newRouterStateTree).toMatchObject([
'',
{
children: [
'linking',
{
children: [
'about',
{
children: ['', {}],
},
],
},
],
},
undefined,
undefined,
true,
])
})
})
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