Add test for pgpass check function scope

packages/pg/test/unit/client/cleartext-password-tests.js

@@ -1,21 +1,30 @@
 'use strict'
 
+const helper = require('./test-helper')
 const createClient = require('./test-helper').createClient
 
-/*
- * TODO: Add _some_ comments to explain what it is we're testing, and how the
- * code-being-tested works behind the scenes.
- */
-
 test('cleartext password authentication', function () {
-  var client = createClient()
-  client.password = '!'
-  client.connection.stream.packets = []
-  client.connection.emit('authenticationCleartextPassword')
   test('responds with password', function () {
+    var client = createClient()
+    client.password = '!'
+    client.connection.stream.packets = []
+    client.connection.emit('authenticationCleartextPassword')
     var packets = client.connection.stream.packets
     assert.lengthIs(packets, 1)
     var packet = packets[0]
     assert.equalBuffers(packet, [0x70, 0, 0, 0, 6, 33, 0])
   })
+
+  test('does not crash with null password using pg-pass', function () {
+    process.env.PGPASSFILE = `${__dirname}/pgpass.file`
+    var client = new helper.Client({
+      host: 'foo',
+      port: 5432,
+      database: 'bar',
+      user: 'baz',
+      stream: new MemoryStream(),
+    })
+    client.connect()
+    client.connection.emit('authenticationCleartextPassword')
+  })
 })

packages/pg/test/unit/client/pgpass.file

@@ -0,0 +1 @@
+foo:5432:bar:baz:quz