Index: node_modules/pg-protocol/src/inbound-parser.test.ts
===================================================================
--- node_modules/pg-protocol/src/inbound-parser.test.ts	(revision 62b296460f935ff5cc47a75f6567f97df5a244a7)
+++ node_modules/pg-protocol/src/inbound-parser.test.ts	(revision 62b296460f935ff5cc47a75f6567f97df5a244a7)
@@ -0,0 +1,585 @@
+import buffers from './testing/test-buffers'
+import BufferList from './testing/buffer-list'
+import { parse } from '.'
+import assert from 'assert'
+import { PassThrough } from 'stream'
+import { BackendMessage } from './messages'
+import { Parser } from './parser'
+
+const authOkBuffer = buffers.authenticationOk()
+const paramStatusBuffer = buffers.parameterStatus('client_encoding', 'UTF8')
+const readyForQueryBuffer = buffers.readyForQuery()
+const backendKeyDataBuffer = buffers.backendKeyData(1, 2)
+const commandCompleteBuffer = buffers.commandComplete('SELECT 3')
+const parseCompleteBuffer = buffers.parseComplete()
+const bindCompleteBuffer = buffers.bindComplete()
+const portalSuspendedBuffer = buffers.portalSuspended()
+
+const row1 = {
+  name: 'id',
+  tableID: 1,
+  attributeNumber: 2,
+  dataTypeID: 3,
+  dataTypeSize: 4,
+  typeModifier: 5,
+  formatCode: 0,
+}
+const oneRowDescBuff = buffers.rowDescription([row1])
+row1.name = 'bang'
+
+const twoRowBuf = buffers.rowDescription([
+  row1,
+  {
+    name: 'whoah',
+    tableID: 10,
+    attributeNumber: 11,
+    dataTypeID: 12,
+    dataTypeSize: 13,
+    typeModifier: 14,
+    formatCode: 0,
+  },
+])
+
+const rowWithBigOids = {
+  name: 'bigoid',
+  tableID: 3000000001,
+  attributeNumber: 2,
+  dataTypeID: 3000000003,
+  dataTypeSize: 4,
+  typeModifier: 5,
+  formatCode: 0,
+}
+const bigOidDescBuff = buffers.rowDescription([rowWithBigOids])
+
+const emptyRowFieldBuf = buffers.dataRow([])
+
+const oneFieldBuf = buffers.dataRow(['test'])
+
+const expectedAuthenticationOkayMessage = {
+  name: 'authenticationOk',
+  length: 8,
+}
+
+const expectedParameterStatusMessage = {
+  name: 'parameterStatus',
+  parameterName: 'client_encoding',
+  parameterValue: 'UTF8',
+  length: 25,
+}
+
+const expectedBackendKeyDataMessage = {
+  name: 'backendKeyData',
+  processID: 1,
+  secretKey: 2,
+}
+
+const expectedReadyForQueryMessage = {
+  name: 'readyForQuery',
+  length: 5,
+  status: 'I',
+}
+
+const expectedCommandCompleteMessage = {
+  name: 'commandComplete',
+  length: 13,
+  text: 'SELECT 3',
+}
+const emptyRowDescriptionBuffer = new BufferList()
+  .addInt16(0) // number of fields
+  .join(true, 'T')
+
+const expectedEmptyRowDescriptionMessage = {
+  name: 'rowDescription',
+  length: 6,
+  fieldCount: 0,
+  fields: [],
+}
+const expectedOneRowMessage = {
+  name: 'rowDescription',
+  length: 27,
+  fieldCount: 1,
+  fields: [
+    {
+      name: 'id',
+      tableID: 1,
+      columnID: 2,
+      dataTypeID: 3,
+      dataTypeSize: 4,
+      dataTypeModifier: 5,
+      format: 'text',
+    },
+  ],
+}
+
+const expectedTwoRowMessage = {
+  name: 'rowDescription',
+  length: 53,
+  fieldCount: 2,
+  fields: [
+    {
+      name: 'bang',
+      tableID: 1,
+      columnID: 2,
+      dataTypeID: 3,
+      dataTypeSize: 4,
+      dataTypeModifier: 5,
+      format: 'text',
+    },
+    {
+      name: 'whoah',
+      tableID: 10,
+      columnID: 11,
+      dataTypeID: 12,
+      dataTypeSize: 13,
+      dataTypeModifier: 14,
+      format: 'text',
+    },
+  ],
+}
+const expectedBigOidMessage = {
+  name: 'rowDescription',
+  length: 31,
+  fieldCount: 1,
+  fields: [
+    {
+      name: 'bigoid',
+      tableID: 3000000001,
+      columnID: 2,
+      dataTypeID: 3000000003,
+      dataTypeSize: 4,
+      dataTypeModifier: 5,
+      format: 'text',
+    },
+  ],
+}
+
+const emptyParameterDescriptionBuffer = new BufferList()
+  .addInt16(0) // number of parameters
+  .join(true, 't')
+
+const oneParameterDescBuf = buffers.parameterDescription([1111])
+
+const twoParameterDescBuf = buffers.parameterDescription([2222, 3333])
+
+const bigOidParameterDescBuf = buffers.parameterDescription([3000000003])
+
+const expectedEmptyParameterDescriptionMessage = {
+  name: 'parameterDescription',
+  length: 6,
+  parameterCount: 0,
+  dataTypeIDs: [],
+}
+
+const expectedOneParameterMessage = {
+  name: 'parameterDescription',
+  length: 10,
+  parameterCount: 1,
+  dataTypeIDs: [1111],
+}
+
+const expectedTwoParameterMessage = {
+  name: 'parameterDescription',
+  length: 14,
+  parameterCount: 2,
+  dataTypeIDs: [2222, 3333],
+}
+
+const expectedBigOidParameterMessage = {
+  name: 'parameterDescription',
+  length: 10,
+  parameterCount: 1,
+  dataTypeIDs: [3000000003],
+}
+
+const testForMessage = function (buffer: Buffer, expectedMessage: any) {
+  it('receives and parses ' + expectedMessage.name, async () => {
+    const messages = await parseBuffers([buffer])
+    const [lastMessage] = messages
+
+    for (const key in expectedMessage) {
+      assert.deepEqual((lastMessage as any)[key], expectedMessage[key])
+    }
+  })
+}
+
+const plainPasswordBuffer = buffers.authenticationCleartextPassword()
+const md5PasswordBuffer = buffers.authenticationMD5Password()
+const SASLBuffer = buffers.authenticationSASL()
+const SASLContinueBuffer = buffers.authenticationSASLContinue()
+const SASLFinalBuffer = buffers.authenticationSASLFinal()
+
+const expectedPlainPasswordMessage = {
+  name: 'authenticationCleartextPassword',
+}
+
+const expectedMD5PasswordMessage = {
+  name: 'authenticationMD5Password',
+  salt: Buffer.from([1, 2, 3, 4]),
+}
+
+const expectedSASLMessage = {
+  name: 'authenticationSASL',
+  mechanisms: ['SCRAM-SHA-256'],
+}
+
+const expectedSASLContinueMessage = {
+  name: 'authenticationSASLContinue',
+  data: 'data',
+}
+
+const expectedSASLFinalMessage = {
+  name: 'authenticationSASLFinal',
+  data: 'data',
+}
+
+const notificationResponseBuffer = buffers.notification(4, 'hi', 'boom')
+const expectedNotificationResponseMessage = {
+  name: 'notification',
+  processId: 4,
+  channel: 'hi',
+  payload: 'boom',
+}
+
+const parseBuffers = async (buffers: Buffer[]): Promise<BackendMessage[]> => {
+  const stream = new PassThrough()
+  for (const buffer of buffers) {
+    stream.write(buffer)
+  }
+  stream.end()
+  const msgs: BackendMessage[] = []
+  await parse(stream, (msg) => msgs.push(msg))
+  return msgs
+}
+
+describe('PgPacketStream', function () {
+  testForMessage(authOkBuffer, expectedAuthenticationOkayMessage)
+  testForMessage(plainPasswordBuffer, expectedPlainPasswordMessage)
+  testForMessage(md5PasswordBuffer, expectedMD5PasswordMessage)
+  testForMessage(SASLBuffer, expectedSASLMessage)
+  testForMessage(SASLContinueBuffer, expectedSASLContinueMessage)
+
+  // this exercises a found bug in the parser:
+  // https://github.com/brianc/node-postgres/pull/2210#issuecomment-627626084
+  // and adds a test which is deterministic, rather than relying on network packet chunking
+  const extendedSASLContinueBuffer = Buffer.concat([SASLContinueBuffer, Buffer.from([1, 2, 3, 4])])
+  testForMessage(extendedSASLContinueBuffer, expectedSASLContinueMessage)
+
+  testForMessage(SASLFinalBuffer, expectedSASLFinalMessage)
+
+  // this exercises a found bug in the parser:
+  // https://github.com/brianc/node-postgres/pull/2210#issuecomment-627626084
+  // and adds a test which is deterministic, rather than relying on network packet chunking
+  const extendedSASLFinalBuffer = Buffer.concat([SASLFinalBuffer, Buffer.from([1, 2, 4, 5])])
+  testForMessage(extendedSASLFinalBuffer, expectedSASLFinalMessage)
+
+  testForMessage(paramStatusBuffer, expectedParameterStatusMessage)
+  testForMessage(backendKeyDataBuffer, expectedBackendKeyDataMessage)
+  testForMessage(readyForQueryBuffer, expectedReadyForQueryMessage)
+  testForMessage(commandCompleteBuffer, expectedCommandCompleteMessage)
+  testForMessage(notificationResponseBuffer, expectedNotificationResponseMessage)
+  testForMessage(buffers.emptyQuery(), {
+    name: 'emptyQuery',
+    length: 4,
+  })
+
+  testForMessage(Buffer.from([0x6e, 0, 0, 0, 4]), {
+    name: 'noData',
+  })
+
+  describe('rowDescription messages', function () {
+    testForMessage(emptyRowDescriptionBuffer, expectedEmptyRowDescriptionMessage)
+    testForMessage(oneRowDescBuff, expectedOneRowMessage)
+    testForMessage(twoRowBuf, expectedTwoRowMessage)
+    testForMessage(bigOidDescBuff, expectedBigOidMessage)
+  })
+
+  describe('parameterDescription messages', function () {
+    testForMessage(emptyParameterDescriptionBuffer, expectedEmptyParameterDescriptionMessage)
+    testForMessage(oneParameterDescBuf, expectedOneParameterMessage)
+    testForMessage(twoParameterDescBuf, expectedTwoParameterMessage)
+    testForMessage(bigOidParameterDescBuf, expectedBigOidParameterMessage)
+  })
+
+  describe('parsing rows', function () {
+    describe('parsing empty row', function () {
+      testForMessage(emptyRowFieldBuf, {
+        name: 'dataRow',
+        fieldCount: 0,
+      })
+    })
+
+    describe('parsing data row with fields', function () {
+      testForMessage(oneFieldBuf, {
+        name: 'dataRow',
+        fieldCount: 1,
+        fields: ['test'],
+      })
+    })
+  })
+
+  describe('notice message', function () {
+    // this uses the same logic as error message
+    const buff = buffers.notice([{ type: 'C', value: 'code' }])
+    testForMessage(buff, {
+      name: 'notice',
+      code: 'code',
+    })
+  })
+
+  testForMessage(buffers.error([]), {
+    name: 'error',
+  })
+
+  describe('with all the fields', function () {
+    const buffer = buffers.error([
+      {
+        type: 'S',
+        value: 'ERROR',
+      },
+      {
+        type: 'C',
+        value: 'code',
+      },
+      {
+        type: 'M',
+        value: 'message',
+      },
+      {
+        type: 'D',
+        value: 'details',
+      },
+      {
+        type: 'H',
+        value: 'hint',
+      },
+      {
+        type: 'P',
+        value: '100',
+      },
+      {
+        type: 'p',
+        value: '101',
+      },
+      {
+        type: 'q',
+        value: 'query',
+      },
+      {
+        type: 'W',
+        value: 'where',
+      },
+      {
+        type: 'F',
+        value: 'file',
+      },
+      {
+        type: 'L',
+        value: 'line',
+      },
+      {
+        type: 'R',
+        value: 'routine',
+      },
+      {
+        type: 'Z', // ignored
+        value: 'alsdkf',
+      },
+    ])
+
+    testForMessage(buffer, {
+      name: 'error',
+      severity: 'ERROR',
+      code: 'code',
+      message: 'message',
+      detail: 'details',
+      hint: 'hint',
+      position: '100',
+      internalPosition: '101',
+      internalQuery: 'query',
+      where: 'where',
+      file: 'file',
+      line: 'line',
+      routine: 'routine',
+    })
+  })
+
+  testForMessage(parseCompleteBuffer, {
+    name: 'parseComplete',
+  })
+
+  testForMessage(bindCompleteBuffer, {
+    name: 'bindComplete',
+  })
+
+  testForMessage(bindCompleteBuffer, {
+    name: 'bindComplete',
+  })
+
+  testForMessage(buffers.closeComplete(), {
+    name: 'closeComplete',
+  })
+
+  describe('parses portal suspended message', function () {
+    testForMessage(portalSuspendedBuffer, {
+      name: 'portalSuspended',
+    })
+  })
+
+  describe('parses replication start message', function () {
+    testForMessage(Buffer.from([0x57, 0x00, 0x00, 0x00, 0x04]), {
+      name: 'replicationStart',
+      length: 4,
+    })
+  })
+
+  describe('copy', () => {
+    testForMessage(buffers.copyIn(0), {
+      name: 'copyInResponse',
+      length: 7,
+      binary: false,
+      columnTypes: [],
+    })
+
+    testForMessage(buffers.copyIn(2), {
+      name: 'copyInResponse',
+      length: 11,
+      binary: false,
+      columnTypes: [0, 1],
+    })
+
+    testForMessage(buffers.copyOut(0), {
+      name: 'copyOutResponse',
+      length: 7,
+      binary: false,
+      columnTypes: [],
+    })
+
+    testForMessage(buffers.copyOut(3), {
+      name: 'copyOutResponse',
+      length: 13,
+      binary: false,
+      columnTypes: [0, 1, 2],
+    })
+
+    testForMessage(buffers.copyDone(), {
+      name: 'copyDone',
+      length: 4,
+    })
+
+    testForMessage(buffers.copyData(Buffer.from([5, 6, 7])), {
+      name: 'copyData',
+      length: 7,
+      chunk: Buffer.from([5, 6, 7]),
+    })
+  })
+
+  // since the data message on a stream can randomly divide the incomming
+  // tcp packets anywhere, we need to make sure we can parse every single
+  // split on a tcp message
+  describe('split buffer, single message parsing', function () {
+    const fullBuffer = buffers.dataRow([null, 'bang', 'zug zug', null, '!'])
+
+    it('parses when full buffer comes in', async function () {
+      const messages = await parseBuffers([fullBuffer])
+      const message = messages[0] as any
+      assert.equal(message.fields.length, 5)
+      assert.equal(message.fields[0], null)
+      assert.equal(message.fields[1], 'bang')
+      assert.equal(message.fields[2], 'zug zug')
+      assert.equal(message.fields[3], null)
+      assert.equal(message.fields[4], '!')
+    })
+
+    const testMessageReceivedAfterSplitAt = async function (split: number) {
+      const firstBuffer = Buffer.alloc(fullBuffer.length - split)
+      const secondBuffer = Buffer.alloc(fullBuffer.length - firstBuffer.length)
+      fullBuffer.copy(firstBuffer, 0, 0)
+      fullBuffer.copy(secondBuffer, 0, firstBuffer.length)
+      const messages = await parseBuffers([firstBuffer, secondBuffer])
+      const message = messages[0] as any
+      assert.equal(message.fields.length, 5)
+      assert.equal(message.fields[0], null)
+      assert.equal(message.fields[1], 'bang')
+      assert.equal(message.fields[2], 'zug zug')
+      assert.equal(message.fields[3], null)
+      assert.equal(message.fields[4], '!')
+    }
+
+    it('parses when split in the middle', function () {
+      return testMessageReceivedAfterSplitAt(6)
+    })
+
+    it('parses when split at end', function () {
+      return testMessageReceivedAfterSplitAt(2)
+    })
+
+    it('parses when split at beginning', function () {
+      return Promise.all([
+        testMessageReceivedAfterSplitAt(fullBuffer.length - 2),
+        testMessageReceivedAfterSplitAt(fullBuffer.length - 1),
+        testMessageReceivedAfterSplitAt(fullBuffer.length - 5),
+      ])
+    })
+  })
+
+  describe('split buffer, multiple message parsing', function () {
+    const dataRowBuffer = buffers.dataRow(['!'])
+    const readyForQueryBuffer = buffers.readyForQuery()
+    const fullBuffer = Buffer.alloc(dataRowBuffer.length + readyForQueryBuffer.length)
+    dataRowBuffer.copy(fullBuffer, 0, 0)
+    readyForQueryBuffer.copy(fullBuffer, dataRowBuffer.length, 0)
+
+    const verifyMessages = function (messages: any[]) {
+      assert.strictEqual(messages.length, 2)
+      assert.deepEqual(messages[0], {
+        name: 'dataRow',
+        fieldCount: 1,
+        length: 11,
+        fields: ['!'],
+      })
+      assert.equal(messages[0].fields[0], '!')
+      assert.deepEqual(messages[1], {
+        name: 'readyForQuery',
+        length: 5,
+        status: 'I',
+      })
+    }
+    // sanity check
+    it('receives both messages when packet is not split', async function () {
+      const messages = await parseBuffers([fullBuffer])
+      verifyMessages(messages)
+    })
+
+    const splitAndVerifyTwoMessages = async function (split: number) {
+      const firstBuffer = Buffer.alloc(fullBuffer.length - split)
+      const secondBuffer = Buffer.alloc(fullBuffer.length - firstBuffer.length)
+      fullBuffer.copy(firstBuffer, 0, 0)
+      fullBuffer.copy(secondBuffer, 0, firstBuffer.length)
+      const messages = await parseBuffers([firstBuffer, secondBuffer])
+      verifyMessages(messages)
+    }
+
+    describe('receives both messages when packet is split', function () {
+      it('in the middle', function () {
+        return splitAndVerifyTwoMessages(11)
+      })
+      it('at the front', function () {
+        return Promise.all([
+          splitAndVerifyTwoMessages(fullBuffer.length - 1),
+          splitAndVerifyTwoMessages(fullBuffer.length - 4),
+          splitAndVerifyTwoMessages(fullBuffer.length - 6),
+        ])
+      })
+
+      it('at the end', function () {
+        return Promise.all([splitAndVerifyTwoMessages(8), splitAndVerifyTwoMessages(1)])
+      })
+    })
+  })
+
+  it('cleans up the reader after handling a packet', function () {
+    const parser = new Parser()
+    parser.parse(oneFieldBuf, () => {})
+    assert.strictEqual((parser as any).reader.buffer.byteLength, 0)
+  })
+})