Change endpoint from persons to people

backend/apis/nodejs/node_modules/pg-pool/test/max-uses.js

@@ -0,0 +1,97 @@
+const expect = require('expect.js')
+const co = require('co')
+
+const describe = require('mocha').describe
+const it = require('mocha').it
+
+const Pool = require('../')
+
+describe('maxUses', () => {
+  it(
+    'can create a single client and use it once',
+    co.wrap(function* () {
+      const pool = new Pool({ maxUses: 2 })
+      expect(pool.waitingCount).to.equal(0)
+      const client = yield pool.connect()
+      const res = yield client.query('SELECT $1::text as name', ['hi'])
+      expect(res.rows[0].name).to.equal('hi')
+      client.release()
+      pool.end()
+    })
+  )
+
+  it(
+    'getting a connection a second time returns the same connection and releasing it also closes it',
+    co.wrap(function* () {
+      const pool = new Pool({ maxUses: 2 })
+      expect(pool.waitingCount).to.equal(0)
+      const client = yield pool.connect()
+      client.release()
+      const client2 = yield pool.connect()
+      expect(client).to.equal(client2)
+      expect(client2._ending).to.equal(false)
+      client2.release()
+      expect(client2._ending).to.equal(true)
+      return yield pool.end()
+    })
+  )
+
+  it(
+    'getting a connection a third time returns a new connection',
+    co.wrap(function* () {
+      const pool = new Pool({ maxUses: 2 })
+      expect(pool.waitingCount).to.equal(0)
+      const client = yield pool.connect()
+      client.release()
+      const client2 = yield pool.connect()
+      expect(client).to.equal(client2)
+      client2.release()
+      const client3 = yield pool.connect()
+      expect(client3).not.to.equal(client2)
+      client3.release()
+      return yield pool.end()
+    })
+  )
+
+  it(
+    'getting a connection from a pending request gets a fresh client when the released candidate is expended',
+    co.wrap(function* () {
+      const pool = new Pool({ max: 1, maxUses: 2 })
+      expect(pool.waitingCount).to.equal(0)
+      const client1 = yield pool.connect()
+      pool.connect().then((client2) => {
+        expect(client2).to.equal(client1)
+        expect(pool.waitingCount).to.equal(1)
+        // Releasing the client this time should also expend it since maxUses is 2, causing client3 to be a fresh client
+        client2.release()
+      })
+      const client3Promise = pool.connect().then((client3) => {
+        // client3 should be a fresh client since client2's release caused the first client to be expended
+        expect(pool.waitingCount).to.equal(0)
+        expect(client3).not.to.equal(client1)
+        return client3.release()
+      })
+      // There should be two pending requests since we have 3 connect requests but a max size of 1
+      expect(pool.waitingCount).to.equal(2)
+      // Releasing the client should not yet expend it since maxUses is 2
+      client1.release()
+      yield client3Promise
+      return yield pool.end()
+    })
+  )
+
+  it(
+    'logs when removing an expended client',
+    co.wrap(function* () {
+      const messages = []
+      const log = function (msg) {
+        messages.push(msg)
+      }
+      const pool = new Pool({ maxUses: 1, log })
+      const client = yield pool.connect()
+      client.release()
+      expect(messages).to.contain('remove expended client')
+      return yield pool.end()
+    })
+  )
+})