diff --git a/packages/pg/test/integration/client/error-handling-tests.js b/packages/pg/test/integration/client/error-handling-tests.js
index 7493ef68d..848839287 100644
--- a/packages/pg/test/integration/client/error-handling-tests.js
+++ b/packages/pg/test/integration/client/error-handling-tests.js
@@ -47,14 +47,11 @@ suite.test('re-using connections results in error callback', (done) => {
   })
 })
 
-suite.test('re-using connections results in promise rejection', () => {
+suite.test('re-using connections results in promise rejection', async () => {
   const client = new Client()
-  return client.connect().then(() => {
-    return helper.rejection(client.connect()).then((err) => {
-      assert(err instanceof Error)
-      return client.end()
-    })
-  })
+  await client.connect()
+  await assert.rejects(client.connect(), Error)
+  await client.end()
 })
 
 suite.test('using a client after closing it results in error', (done) => {
diff --git a/packages/pg/test/suite.js b/packages/pg/test/suite.js
index 7a1c20008..e8d9d0834 100644
--- a/packages/pg/test/suite.js
+++ b/packages/pg/test/suite.js
@@ -1,11 +1,6 @@
 'use strict'
 
 const async = require('async')
-const { deprecate } = require('util')
-
-const deprecatedTestAsync = deprecate(function (name, cb) {
-  this.test(name, cb)
-}, 'Suite#testAsync is deprecated. Use Suite#test instead - it handles promises & async functions just fine.')
 
 class Test {
   constructor(name, cb) {
@@ -75,17 +70,6 @@ class Suite {
     const test = new Test(name, cb)
     this._queue.push(test)
   }
-
-  testAsync(name, cb) {
-    return deprecatedTestAsync.call(this, name, cb)
-  }
 }
 
-process.on('unhandledRejection', (e) => {
-  setImmediate(() => {
-    console.error('Unhandled promise rejection')
-    throw e
-  })
-})
-
 module.exports = Suite
diff --git a/packages/pg/test/test-helper.js b/packages/pg/test/test-helper.js
index 8cd9dda36..3d2d4d4d8 100644
--- a/packages/pg/test/test-helper.js
+++ b/packages/pg/test/test-helper.js
@@ -21,7 +21,8 @@ process.on('uncaughtException', function (d) {
   } else {
     console.log(d)
   }
-  process.exit(-1)
+  // causes xargs to abort right away
+  process.exit(255)
 })
 const expect = function (callback, timeout) {
   const executed = false
@@ -66,12 +67,6 @@ process.on('exit', function () {
   console.log('')
 })
 
-process.on('uncaughtException', function (err) {
-  console.error('\n %s', err.stack || err.toString())
-  // causes xargs to abort right away
-  process.exit(255)
-})
-
 const getTimezoneOffset = Date.prototype.getTimezoneOffset
 
 const setTimezoneOffset = function (minutesOffset) {
@@ -84,14 +79,6 @@ const resetTimezoneOffset = function () {
   Date.prototype.getTimezoneOffset = getTimezoneOffset
 }
 
-const rejection = (promise) =>
-  promise.then(
-    (value) => {
-      throw new Error(`Promise resolved when rejection was expected; value: ${sys.inspect(value)}`)
-    },
-    (error) => error
-  )
-
 if (Object.isExtensible(assert)) {
   assert.same = function (actual, expected) {
     for (const key in expected) {
@@ -124,49 +111,6 @@ if (Object.isExtensible(assert)) {
     })
   }
 
-  assert.UTCDate = function (actual, year, month, day, hours, min, sec, milisecond) {
-    const actualYear = actual.getUTCFullYear()
-    assert.equal(actualYear, year, 'expected year ' + year + ' but got ' + actualYear)
-
-    const actualMonth = actual.getUTCMonth()
-    assert.equal(actualMonth, month, 'expected month ' + month + ' but got ' + actualMonth)
-
-    const actualDate = actual.getUTCDate()
-    assert.equal(actualDate, day, 'expected day ' + day + ' but got ' + actualDate)
-
-    const actualHours = actual.getUTCHours()
-    assert.equal(actualHours, hours, 'expected hours ' + hours + ' but got ' + actualHours)
-
-    const actualMin = actual.getUTCMinutes()
-    assert.equal(actualMin, min, 'expected min ' + min + ' but got ' + actualMin)
-
-    const actualSec = actual.getUTCSeconds()
-    assert.equal(actualSec, sec, 'expected sec ' + sec + ' but got ' + actualSec)
-
-    const actualMili = actual.getUTCMilliseconds()
-    assert.equal(actualMili, milisecond, 'expected milisecond ' + milisecond + ' but got ' + actualMili)
-  }
-
-  const spit = function (actual, expected) {
-    console.log('')
-    console.log('actual ' + sys.inspect(actual))
-    console.log('expect ' + sys.inspect(expected))
-    console.log('')
-  }
-
-  assert.equalBuffers = function (actual, expected) {
-    if (actual.length != expected.length) {
-      spit(actual, expected)
-      assert.equal(actual.length, expected.length)
-    }
-    for (let i = 0; i < actual.length; i++) {
-      if (actual[i] != expected[i]) {
-        spit(actual, expected)
-      }
-      assert.equal(actual[i], expected[i])
-    }
-  }
-
   assert.empty = function (actual) {
     assert.lengthIs(actual, 0)
   }
@@ -257,6 +201,5 @@ module.exports = {
   Client: Client,
   setTimezoneOffset: setTimezoneOffset,
   resetTimezoneOffset: resetTimezoneOffset,
-  rejection: rejection,
   createPersonTable: createPersonTable,
 }
diff --git a/packages/pg/test/unit/client/cleartext-password-tests.js b/packages/pg/test/unit/client/cleartext-password-tests.js
index 388d94cf9..b844db5e6 100644
--- a/packages/pg/test/unit/client/cleartext-password-tests.js
+++ b/packages/pg/test/unit/client/cleartext-password-tests.js
@@ -14,7 +14,7 @@ suite.test('cleartext password auth responds with password', function () {
   const packets = client.connection.stream.packets
   assert.lengthIs(packets, 1)
   const packet = packets[0]
-  assert.equalBuffers(packet, [0x70, 0, 0, 0, 6, 33, 0])
+  assert.deepStrictEqual(packet, Buffer.from([0x70, 0, 0, 0, 6, 33, 0]))
 })
 
 suite.test('cleartext password auth does not crash with null password using pg-pass', function () {
diff --git a/packages/pg/test/unit/client/md5-password-tests.js b/packages/pg/test/unit/client/md5-password-tests.js
index 8fd2f7c2f..a00b15b1f 100644
--- a/packages/pg/test/unit/client/md5-password-tests.js
+++ b/packages/pg/test/unit/client/md5-password-tests.js
@@ -18,7 +18,10 @@ test('md5 authentication', async function () {
       test('should have correct encrypted data', async function () {
         const password = await crypto.postgresMd5PasswordHash(client.user, client.password, salt)
         // how do we want to test this?
-        assert.equalBuffers(client.connection.stream.packets[0], new BufferList().addCString(password).join(true, 'p'))
+        assert.deepStrictEqual(
+          client.connection.stream.packets[0],
+          new BufferList().addCString(password).join(true, 'p')
+        )
       })
     })
   )