feat: add no vary on root index test (#31)

Author: orinokai

.eslintrc.cjs

@@ -25,5 +25,12 @@ module.exports = {
         'import/no-anonymous-default-export': 'off',
       },
     },
+    {
+      files: ['src/**/*.test.*'],
+      rules: {
+        'max-statements': off,
+        'max-lines-per-function': off,
+      },
+    },
   ],
 }

src/helpers/headers.test.ts

@@ -22,20 +22,26 @@ describe('headers', () => {
 
         setVaryHeaders(headers, request, defaultConfig)
 
-        expect(headers.set).toBeCalledWith('netlify-vary', 'cookie=__prerender_bypass|__next_preview_data')
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'cookie=__prerender_bypass|__next_preview_data',
+        )
       })
 
       test('with expected vary headers', () => {
         const givenHeaders = {
-          'vary': 'Accept, Accept-Language',
+          vary: 'Accept, Accept-Language',
         }
         const headers = new Headers(givenHeaders)
         const request = new Request(defaultUrl)
         vi.spyOn(headers, 'set')
 
         setVaryHeaders(headers, request, defaultConfig)
 
-        expect(headers.set).toBeCalledWith('netlify-vary', 'header=Accept|Accept-Language,cookie=__prerender_bypass|__next_preview_data')
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'header=Accept|Accept-Language,cookie=__prerender_bypass|__next_preview_data',
+        )
       })
 
       test('with no languages if i18n config has localeDetection disabled', () => {
@@ -53,7 +59,30 @@ describe('headers', () => {
 
         setVaryHeaders(headers, request, config)
 
-        expect(headers.set).toBeCalledWith('netlify-vary', 'cookie=__prerender_bypass|__next_preview_data')
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'cookie=__prerender_bypass|__next_preview_data',
+        )
+      })
+
+      test('with no languages if path is root index', () => {
+        const headers = new Headers()
+        const request = new Request(`${defaultUrl}/another/path`)
+        const config = {
+          ...defaultConfig,
+          i18n: {
+            locales: ['en', 'de'],
+            defaultLocale: 'default',
+          },
+        }
+        vi.spyOn(headers, 'set')
+
+        setVaryHeaders(headers, request, config)
+
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'cookie=__prerender_bypass|__next_preview_data',
+        )
       })
 
       test('with expected languages if i18n config has locales', () => {
@@ -70,7 +99,10 @@ describe('headers', () => {
 
         setVaryHeaders(headers, request, config)
 
-        expect(headers.set).toBeCalledWith('netlify-vary', 'language=en|de|fr,cookie=__prerender_bypass|__next_preview_data|NEXT_LOCALE')
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'language=en|de|fr,cookie=__prerender_bypass|__next_preview_data|NEXT_LOCALE',
+        )
       })
 
       test('with expected languages if i18n config has locales and basePath matches the current path', () => {
@@ -88,7 +120,10 @@ describe('headers', () => {
 
         setVaryHeaders(headers, request, config)
 
-        expect(headers.set).toBeCalledWith('netlify-vary', 'language=en|de|fr,cookie=__prerender_bypass|__next_preview_data|NEXT_LOCALE')
+        expect(headers.set).toBeCalledWith(
+          'netlify-vary',
+          'language=en|de|fr,cookie=__prerender_bypass|__next_preview_data|NEXT_LOCALE',
+        )
       })
     })
   })
@@ -138,8 +173,16 @@ describe('headers', () => {
 
       setCacheControlHeaders(headers)
 
-      expect(headers.set).toHaveBeenNthCalledWith(1, 'cache-control', 'public, max-age=0, must-revalidate')
-      expect(headers.set).toHaveBeenNthCalledWith(2, 'netlify-cdn-cache-control', 'public, max-age=0, must-revalidate')
+      expect(headers.set).toHaveBeenNthCalledWith(
+        1,
+        'cache-control',
+        'public, max-age=0, must-revalidate',
+      )
+      expect(headers.set).toHaveBeenNthCalledWith(
+        2,
+        'netlify-cdn-cache-control',
+        'public, max-age=0, must-revalidate',
+      )
     })
 
     test('should remove "s-maxage" from "cache-control" header', () => {
@@ -152,7 +195,11 @@ describe('headers', () => {
       setCacheControlHeaders(headers)
 
       expect(headers.set).toHaveBeenNthCalledWith(1, 'cache-control', 'public')
-      expect(headers.set).toHaveBeenNthCalledWith(2, 'netlify-cdn-cache-control', 'public, s-maxage=604800')
+      expect(headers.set).toHaveBeenNthCalledWith(
+        2,
+        'netlify-cdn-cache-control',
+        'public, s-maxage=604800',
+      )
     })
 
     test('should remove "stale-while-revalidate" from "cache-control" header', () => {
@@ -165,10 +212,14 @@ describe('headers', () => {
       setCacheControlHeaders(headers)
 
       expect(headers.set).toHaveBeenNthCalledWith(1, 'cache-control', 'max-age=604800')
-      expect(headers.set).toHaveBeenNthCalledWith(2, 'netlify-cdn-cache-control', 'max-age=604800, stale-while-revalidate=86400')
+      expect(headers.set).toHaveBeenNthCalledWith(
+        2,
+        'netlify-cdn-cache-control',
+        'max-age=604800, stale-while-revalidate=86400',
+      )
     })
 
-    test('should set default "cache-control" header if it contains both "s-maxage" and "stale-whie-revalidate"', () => {
+    test('should set default "cache-control" header if it contains only "s-maxage" and "stale-whie-revalidate"', () => {
       const givenHeaders = {
         'cache-control': 's-maxage=604800, stale-while-revalidate=86400',
       }
@@ -177,8 +228,16 @@ describe('headers', () => {
 
       setCacheControlHeaders(headers)
 
-      expect(headers.set).toHaveBeenNthCalledWith(1, 'cache-control', 'public, max-age=0, must-revalidate')
-      expect(headers.set).toHaveBeenNthCalledWith(2, 'netlify-cdn-cache-control', 's-maxage=604800, stale-while-revalidate=86400')
+      expect(headers.set).toHaveBeenNthCalledWith(
+        1,
+        'cache-control',
+        'public, max-age=0, must-revalidate',
+      )
+      expect(headers.set).toHaveBeenNthCalledWith(
+        2,
+        'netlify-cdn-cache-control',
+        's-maxage=604800, stale-while-revalidate=86400',
+      )
     })
   })