From 0c3a8a3e688c269c9b0f40b54b6def8bb1ee1abe Mon Sep 17 00:00:00 2001
From: Yawar Quadir Amin <68562631+yamin-oanda@users.noreply.github.com>
Date: Wed, 1 Nov 2023 14:50:54 +0000
Subject: [PATCH] [finagle-mysql] Give NullParameter a friendly string
 representation

Otherwise stringifying it results in random output like:
 `com.twitter.finagle.mysql.Parameter$NullParameter$@5550f534`.

This doesn't work well with e.g. snapshot tests.

Result

Closes twitter/finagle#947

Differential Revision: https://phabricator.twitter.biz/D1107769
---
 .../src/main/scala/com/twitter/finagle/mysql/Parameter.scala     | 1 +
 1 file changed, 1 insertion(+)

diff --git a/finagle-mysql/src/main/scala/com/twitter/finagle/mysql/Parameter.scala b/finagle-mysql/src/main/scala/com/twitter/finagle/mysql/Parameter.scala
index 79889c6578..73d1906432 100644
--- a/finagle-mysql/src/main/scala/com/twitter/finagle/mysql/Parameter.scala
+++ b/finagle-mysql/src/main/scala/com/twitter/finagle/mysql/Parameter.scala
@@ -179,6 +179,7 @@ object Parameter {
     type A = Null
     def value: Null = null
     def evidence: CanBeParameter[Null] = CanBeParameter.nullCanBeParameter
+    override def toString: String = "Parameter(null)"
   }
 }