fatsify核心功能示例测试!!!

node_modules/fastify/test/internals/server.test.js

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+'use strict'
+
+const { test } = require('node:test')
+const proxyquire = require('proxyquire')
+
+const Fastify = require('../../fastify')
+const { createServer } = require('../../lib/server')
+
+const handler = (req, res) => {
+  res.writeHead(200, { 'Content-Type': 'application/json' })
+  res.end(JSON.stringify({ data: 'Hello World!' }))
+}
+
+test('start listening', async t => {
+  const { server, listen } = createServer({}, handler)
+  await listen.call(Fastify(), { port: 0, host: 'localhost' })
+  server.close()
+  t.assert.ok(true, 'server started')
+})
+
+test('DNS errors does not stop the main server on localhost - promise interface', async t => {
+  const { createServer } = proxyquire('../../lib/server', {
+    'node:dns': {
+      lookup: (hostname, options, cb) => {
+        cb(new Error('DNS error'))
+      }
+    }
+  })
+  const { server, listen } = createServer({}, handler)
+  await listen.call(Fastify(), { port: 0, host: 'localhost' })
+  server.close()
+  t.assert.ok(true, 'server started')
+})
+
+test('DNS errors does not stop the main server on localhost - callback interface', (t, done) => {
+  t.plan(2)
+  const { createServer } = proxyquire('../../lib/server', {
+    'node:dns': {
+      lookup: (hostname, options, cb) => {
+        cb(new Error('DNS error'))
+      }
+    }
+  })
+  const { server, listen } = createServer({}, handler)
+  listen.call(Fastify(), { port: 0, host: 'localhost' }, (err) => {
+    t.assert.ifError(err)
+    server.close()
+    t.assert.ok(true, 'server started')
+    done()
+  })
+})
+
+test('DNS returns empty binding', (t, done) => {
+  t.plan(2)
+  const { createServer } = proxyquire('../../lib/server', {
+    'node:dns': {
+      lookup: (hostname, options, cb) => {
+        cb(null, [])
+      }
+    }
+  })
+  const { server, listen } = createServer({}, handler)
+  listen.call(Fastify(), { port: 0, host: 'localhost' }, (err) => {
+    t.assert.ifError(err)
+    server.close()
+    t.assert.ok(true, 'server started')
+    done()
+  })
+})
+
+test('DNS returns more than two binding', (t, done) => {
+  t.plan(2)
+  const { createServer } = proxyquire('../../lib/server', {
+    'node:dns': {
+      lookup: (hostname, options, cb) => {
+        cb(null, [
+          { address: '::1', family: 6 },
+          { address: '127.0.0.1', family: 4 },
+          { address: '0.0.0.0', family: 4 }
+        ])
+      }
+    }
+  })
+  const { server, listen } = createServer({}, handler)
+  listen.call(Fastify(), { port: 0, host: 'localhost' }, (err) => {
+    t.assert.ifError(err)
+    server.close()
+    t.assert.ok(true, 'server started')
+    done()
+  })
+})