Fix/348 multi root and pre compression infinite loop (#360)

* fix: keep track of rootPathOffset to avoid infinite loop

* fix: add tests

index.js

@@ -240,7 +240,7 @@ async function fastifyStatic (fastify, opts) {
  reply,
  pathname,
  rootPath,
- undefined,
+ rootPathOffset,
  undefined,
  checkedEncodings
  )

test/static.test.js

@@ -3646,3 +3646,60 @@ t.test('should serve files into hidden dir without wildcard option', (t) => {
  })
  })
 })
+
+t.test(
+ 'will serve pre-compressed files with .gzip if multi-root',
+ async (t) => {
+ const pluginOptions = {
+ root: [path.join(__dirname, '/static-pre-compressed'), path.join(__dirname, '/static')],
+ preCompressed: true
+ }
+
+ const fastify = Fastify()
+
+ fastify.register(fastifyStatic, pluginOptions)
+ t.teardown(fastify.close.bind(fastify))
+
+ const response = await fastify.inject({
+ method: 'GET',
+ url: 'all-three.html',
+ headers: {
+ 'accept-encoding': '*, *'
+ }
+ })
+
+ genericResponseChecks(t, response)
+ t.equal(response.headers['content-encoding'], 'gzip')
+ t.equal(response.statusCode, 200)
+ t.same(response.rawPayload, allThreeGzip)
+ t.end()
+ }
+)
+
+t.test(
+ 'will still serve un-compressed files with multi-root and preCompressed as true',
+ async (t) => {
+ const pluginOptions = {
+ root: [path.join(__dirname, '/static-pre-compressed'), path.join(__dirname, '/static')],
+ preCompressed: true
+ }
+
+ const fastify = Fastify()
+
+ fastify.register(fastifyStatic, pluginOptions)
+ t.teardown(fastify.close.bind(fastify))
+
+ const response = await fastify.inject({
+ method: 'GET',
+ url: 'foobar.html',
+ headers: {
+ 'accept-encoding': '*, *'
+ }
+ })
+
+ genericResponseChecks(t, response)
+ t.equal(response.statusCode, 200)
+ t.same(response.body, foobarContent)
+ t.end()
+ }
+)