fatsify核心功能示例测试!!!

node_modules/fastify/test/route-prefix.test.js

@@ -0,0 +1,904 @@
+'use strict'
+
+const { test } = require('node:test')
+const Fastify = require('..')
+const { waitForCb } = require('./toolkit')
+
+test('Prefix options should add a prefix for all the routes inside a register / 1', (t, testDone) => {
+  t.plan(6)
+  const fastify = Fastify()
+
+  fastify.get('/first', (req, reply) => {
+    reply.send({ route: '/first' })
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/first', (req, reply) => {
+      reply.send({ route: '/v1/first' })
+    })
+
+    fastify.register(function (fastify, opts, done) {
+      fastify.get('/first', (req, reply) => {
+        reply.send({ route: '/v1/v2/first' })
+      })
+      done()
+    }, { prefix: '/v2' })
+
+    done()
+  }, { prefix: '/v1' })
+
+  const completion = waitForCb({ steps: 3 })
+  fastify.inject({
+    method: 'GET',
+    url: '/first'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/first' })
+    completion.stepIn()
+  })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/first'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/first' })
+    completion.stepIn()
+  })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/v2/first'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/v2/first' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('Prefix options should add a prefix for all the routes inside a register / 2', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/first', (req, reply) => {
+      reply.send({ route: '/v1/first' })
+    })
+
+    fastify.get('/second', (req, reply) => {
+      reply.send({ route: '/v1/second' })
+    })
+    done()
+  }, { prefix: '/v1' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/first'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/first' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/second'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/second' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('Prefix options should add a prefix for all the chained routes inside a register / 3', (t, testDone) => {
+  t.plan(4)
+
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify
+      .get('/first', (req, reply) => {
+        reply.send({ route: '/v1/first' })
+      })
+      .get('/second', (req, reply) => {
+        reply.send({ route: '/v1/second' })
+      })
+    done()
+  }, { prefix: '/v1' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/first'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/first' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/second'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/second' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('Prefix should support parameters as well', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/hello', (req, reply) => {
+      reply.send({ id: req.params.id })
+    })
+    done()
+  }, { prefix: '/v1/:id' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/param/hello'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { id: 'param' })
+    testDone()
+  })
+})
+
+test('Prefix should support /', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+    done()
+  }, { prefix: '/v1' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('Prefix without /', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+    done()
+  }, { prefix: 'v1' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('Prefix with trailing /', (t, testDone) => {
+  t.plan(6)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/route1', (req, reply) => {
+      reply.send({ hello: 'world1' })
+    })
+    fastify.get('route2', (req, reply) => {
+      reply.send({ hello: 'world2' })
+    })
+
+    fastify.register(function (fastify, opts, done) {
+      fastify.get('/route3', (req, reply) => {
+        reply.send({ hello: 'world3' })
+      })
+      done()
+    }, { prefix: '/inner/' })
+
+    done()
+  }, { prefix: '/v1/' })
+
+  const completion = waitForCb({ steps: 3 })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/route1'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world1' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/route2'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world2' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/inner/route3'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world3' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('Prefix works multiple levels deep', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.register(function (fastify, opts, done) {
+      fastify.register(function (fastify, opts, done) {
+        fastify.register(function (fastify, opts, done) {
+          fastify.get('/', (req, reply) => {
+            reply.send({ hello: 'world' })
+          })
+          done()
+        }, { prefix: '/v3' })
+        done()
+      }) // No prefix on this level
+      done()
+    }, { prefix: 'v2' })
+    done()
+  }, { prefix: '/v1' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/v2/v3'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('Different register - encapsulation check', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify()
+
+  fastify.get('/first', (req, reply) => {
+    reply.send({ route: '/first' })
+  })
+
+  fastify.register(function (instance, opts, done) {
+    instance.register(function (f, opts, done) {
+      f.get('/', (req, reply) => {
+        reply.send({ route: '/v1/v2' })
+      })
+      done()
+    }, { prefix: '/v2' })
+    done()
+  }, { prefix: '/v1' })
+
+  fastify.register(function (instance, opts, done) {
+    instance.register(function (f, opts, done) {
+      f.get('/', (req, reply) => {
+        reply.send({ route: '/v3/v4' })
+      })
+      done()
+    }, { prefix: '/v4' })
+    done()
+  }, { prefix: '/v3' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/v2'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v1/v2' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v3/v4'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { route: '/v3/v4' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('Can retrieve prefix within encapsulated instances', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify()
+
+  fastify.register(function (instance, opts, done) {
+    instance.get('/one', function (req, reply) {
+      reply.send(instance.prefix)
+    })
+
+    instance.register(function (instance, opts, done) {
+      instance.get('/two', function (req, reply) {
+        reply.send(instance.prefix)
+      })
+      done()
+    }, { prefix: '/v2' })
+
+    done()
+  }, { prefix: '/v1' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/one'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(res.payload, '/v1')
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/v1/v2/two'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(res.payload, '/v1/v2')
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/ with a / route', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('prefix "/prefix/" does not match "/prefix" with a / route', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify()
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix/' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(res.statusCode, 404)
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/ with a / route - ignoreTrailingSlash: true', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/ with a / route - ignoreDuplicateSlashes: true', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreDuplicateSlashes: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/  with a / route - prefixTrailingSlash: "both", ignoreTrailingSlash: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'both',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/  with a / route - prefixTrailingSlash: "both", ignoreDuplicateSlashes: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreDuplicateSlashes: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'both',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/ with a / route - ignoreTrailingSlash: true, ignoreDuplicateSlashes: true', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true,
+    ignoreDuplicateSlashes: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches both /prefix and /prefix/ with a / route - ignoreTrailingSlash: true, ignoreDuplicateSlashes: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true,
+    ignoreDuplicateSlashes: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.get('/', (req, reply) => {
+      reply.send({ hello: 'world' })
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('returns 404 status code with /prefix/ and / route - prefixTrailingSlash: "both" (default), ignoreTrailingSlash: true', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix/' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix//'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), {
+      error: 'Not Found',
+      message: 'Route GET:/prefix// not found',
+      statusCode: 404
+    })
+    testDone()
+  })
+})
+
+test('matches both /prefix and /prefix/  with a / route - prefixTrailingSlash: "both", ignoreDuplicateSlashes: true', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify({
+    ignoreDuplicateSlashes: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix/' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix//'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('matches both /prefix and /prefix/  with a / route - prefixTrailingSlash: "both", ignoreTrailingSlash: true, ignoreDuplicateSlashes: true', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true,
+    ignoreDuplicateSlashes: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix/' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix//'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('matches both /prefix and /prefix/  with a / route - prefixTrailingSlash: "both", ignoreDuplicateSlashes: true', (t, testDone) => {
+  t.plan(2)
+  const fastify = Fastify({
+    ignoreTrailingSlash: true,
+    ignoreDuplicateSlashes: true
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix/' })
+
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix//'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    testDone()
+  })
+})
+
+test('matches only /prefix  with a / route - prefixTrailingSlash: "no-slash", ignoreTrailingSlash: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'no-slash',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload).statusCode, 404)
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches only /prefix  with a / route - prefixTrailingSlash: "no-slash", ignoreDuplicateSlashes: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreDuplicateSlashes: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'no-slash',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload).statusCode, 404)
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('matches only /prefix/  with a / route - prefixTrailingSlash: "slash", ignoreTrailingSlash: false', (t, testDone) => {
+  t.plan(4)
+  const fastify = Fastify({
+    ignoreTrailingSlash: false
+  })
+
+  fastify.register(function (fastify, opts, done) {
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'slash',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    done()
+  }, { prefix: '/prefix' })
+
+  const completion = waitForCb({ steps: 2 })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix/'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload), { hello: 'world' })
+    completion.stepIn()
+  })
+  fastify.inject({
+    method: 'GET',
+    url: '/prefix'
+  }, (err, res) => {
+    t.assert.ifError(err)
+    t.assert.deepStrictEqual(JSON.parse(res.payload).statusCode, 404)
+    completion.stepIn()
+  })
+  completion.patience.then(testDone)
+})
+
+test('calls onRoute only once when prefixing', async t => {
+  t.plan(1)
+  const fastify = Fastify({
+    ignoreTrailingSlash: false,
+    exposeHeadRoutes: false
+  })
+
+  let onRouteCalled = 0
+  fastify.register(function (fastify, opts, next) {
+    fastify.addHook('onRoute', () => {
+      onRouteCalled++
+    })
+
+    fastify.route({
+      method: 'GET',
+      url: '/',
+      prefixTrailingSlash: 'both',
+      handler: (req, reply) => {
+        reply.send({ hello: 'world' })
+      }
+    })
+
+    next()
+  }, { prefix: '/prefix' })
+
+  await fastify.ready()
+
+  t.assert.deepStrictEqual(onRouteCalled, 1)
+})