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import loadCustomRoutes from './load-custom-routes'
describe('loadCustomRoutes', () => {
describe('rewrites', () => {
it('missing rewrites should not throw', async () => {
const customRoutes = await loadCustomRoutes({})
expect(customRoutes.rewrites.beforeFiles).toEqual([])
expect(customRoutes.rewrites.afterFiles).toEqual([])
expect(customRoutes.rewrites.fallback).toEqual([])
})
it('array rewrites should be added to afterFiles', async () => {
const customRoutes = await loadCustomRoutes({
async rewrites() {
return [
{
source: '/a',
destination: '/b',
},
]
},
})
expect(customRoutes.rewrites.beforeFiles).toEqual([])
expect(customRoutes.rewrites.afterFiles).toEqual([
{
destination: '/b',
source: '/a',
},
])
expect(customRoutes.rewrites.fallback).toEqual([])
})
it('rewrites should be preserved correctly', async () => {
const customRoutes = await loadCustomRoutes({
async rewrites() {
return {
beforeFiles: [
{
source: '/beforeFiles/a',
destination: '/beforeFiles/b',
},
],
afterFiles: [
{
source: '/afterFiles/a',
destination: '/afterFiles/b',
},
],
fallback: [
{
source: '/fallback/a',
destination: '/fallback/b',
},
],
}
},
})
expect(customRoutes.rewrites.beforeFiles).toEqual([
{
destination: '/beforeFiles/b',
source: '/beforeFiles/a',
},
])
expect(customRoutes.rewrites.afterFiles).toEqual([
{
destination: '/afterFiles/b',
source: '/afterFiles/a',
},
])
expect(customRoutes.rewrites.fallback).toEqual([
{
destination: '/fallback/b',
source: '/fallback/a',
},
])
})
describe('assetPrefix', () => {
it('automatically inserts assetPrefix rewrite for /_next/ paths', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: '/custom-asset-prefix',
async rewrites() {
return [
{
source: '/a',
destination: '/b',
},
]
},
})
expect(customRoutes.rewrites.beforeFiles).toEqual([
{
destination: '/_next/:path+',
source: '/custom-asset-prefix/_next/:path+',
},
])
expect(customRoutes.rewrites.afterFiles).toEqual([
{
destination: '/b',
source: '/a',
},
])
})
it('automatically inserts assetPrefix rewrite for /_next/ paths when rewrites() is not present', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: '/custom-asset-prefix',
})
expect(customRoutes.rewrites.beforeFiles).toEqual([
{
destination: '/_next/:path+',
source: '/custom-asset-prefix/_next/:path+',
},
])
expect(customRoutes.rewrites.afterFiles).toEqual([])
})
it('automatically inserts assetPrefix rewrite for /_next/ paths for basePath', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: '/custom-asset-prefix',
basePath: '/custom-base-path',
async rewrites() {
return [
{
source: '/a',
destination: '/b',
},
]
},
})
expect(customRoutes.rewrites.beforeFiles).toEqual([
{
destination: '/custom-base-path/_next/:path+',
source: '/custom-asset-prefix/_next/:path+',
},
])
expect(customRoutes.rewrites.afterFiles).toEqual([
{
destination: '/custom-base-path/b',
source: '/custom-base-path/a',
},
])
})
it('does not insert assetPrefix rewrite for /_next/ paths when assetPrefix is absolute URL', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: 'https://example.com',
})
expect(customRoutes.rewrites.beforeFiles).toEqual([])
expect(customRoutes.rewrites.afterFiles).toEqual([])
})
it('automatically insert assetPrefix rewrite for /_next/ paths when assetPrefix is absolute URL with a path', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: 'https://example.com/custom-asset-prefix',
})
expect(customRoutes.rewrites.beforeFiles).toEqual([
{
destination: '/_next/:path+',
source: '/custom-asset-prefix/_next/:path+',
},
])
expect(customRoutes.rewrites.afterFiles).toEqual([])
})
it('does not add rewrite when assetPrefix === basePath', async () => {
const customRoutes = await loadCustomRoutes({
assetPrefix: '/base',
basePath: '/base',
})
expect(customRoutes.rewrites.beforeFiles).toEqual([])
expect(customRoutes.rewrites.afterFiles).toEqual([])
})
})
})
})
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