Einkaufslisten anzeigen, Datenbankeinbindung

express-server/node_modules/pg-pool/test/connection-timeout.js

@@ -0,0 +1,107 @@
+'use strict'
+const net = require('net')
+const co = require('co')
+const expect = require('expect.js')
+
+const describe = require('mocha').describe
+const it = require('mocha').it
+const before = require('mocha').before
+const after = require('mocha').after
+
+const Pool = require('../')
+
+describe('connection timeout', () => {
+  before((done) => {
+    this.server = net.createServer((socket) => {
+    })
+
+    this.server.listen(() => {
+      this.port = this.server.address().port
+      done()
+    })
+  })
+
+  after((done) => {
+    this.server.close(done)
+  })
+
+  it('should callback with an error if timeout is passed', (done) => {
+    const pool = new Pool({ connectionTimeoutMillis: 10, port: this.port })
+    pool.connect((err, client, release) => {
+      expect(err).to.be.an(Error)
+      expect(err.message).to.contain('timeout')
+      expect(client).to.equal(undefined)
+      expect(pool.idleCount).to.equal(0)
+      done()
+    })
+  })
+
+  it('should reject promise with an error if timeout is passed', (done) => {
+    const pool = new Pool({ connectionTimeoutMillis: 10, port: this.port })
+    pool.connect().catch(err => {
+      expect(err).to.be.an(Error)
+      expect(err.message).to.contain('timeout')
+      expect(pool.idleCount).to.equal(0)
+      done()
+    })
+  })
+
+  it('should handle multiple timeouts', co.wrap(function * () {
+    const errors = []
+    const pool = new Pool({ connectionTimeoutMillis: 1, port: this.port })
+    for (var i = 0; i < 15; i++) {
+      try {
+        yield pool.connect()
+      } catch (e) {
+        errors.push(e)
+      }
+    }
+    expect(errors).to.have.length(15)
+  }.bind(this)))
+
+  it('should timeout on checkout of used connection', (done) => {
+    const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
+    pool.connect((err, client, release) => {
+      expect(err).to.be(undefined)
+      expect(client).to.not.be(undefined)
+      pool.connect((err, client) => {
+        expect(err).to.be.an(Error)
+        expect(client).to.be(undefined)
+        release()
+        pool.end(done)
+      })
+    })
+  })
+
+  it('should timeout on query if all clients are busy', (done) => {
+    const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
+    pool.connect((err, client, release) => {
+      expect(err).to.be(undefined)
+      expect(client).to.not.be(undefined)
+      pool.query('select now()', (err, result) => {
+        expect(err).to.be.an(Error)
+        expect(result).to.be(undefined)
+        release()
+        pool.end(done)
+      })
+    })
+  })
+
+  it('should recover from timeout errors', (done) => {
+    const pool = new Pool({ connectionTimeoutMillis: 100, max: 1 })
+    pool.connect((err, client, release) => {
+      expect(err).to.be(undefined)
+      expect(client).to.not.be(undefined)
+      pool.query('select now()', (err, result) => {
+        expect(err).to.be.an(Error)
+        expect(result).to.be(undefined)
+        release()
+        pool.query('select $1::text as name', ['brianc'], (err, res) => {
+          expect(err).to.be(undefined)
+          expect(res.rows).to.have.length(1)
+          pool.end(done)
+        })
+      })
+    })
+  })
+})