From 9007f5d3acaa4ad1e2366a1abd79503d24810900 Mon Sep 17 00:00:00 2001
From: Jean Boussier <jean.boussier@gmail.com>
Date: Mon, 13 Nov 2023 12:40:33 +0100
Subject: [PATCH] Eagerly fail if db parameter isn't an Integer

Fix: https://github.com/redis/redis-rb/issues/1235
---
 CHANGELOG.md               | 2 ++
 lib/redis_client/config.rb | 7 ++++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e74ea96..4b09975 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+- Eagerly fail if `db:` isn't an Integer. #151.
+
 # 0.18.0
 
 - Expose more connection details such as `host`, `db`, etc on `RedisClient`.
diff --git a/lib/redis_client/config.rb b/lib/redis_client/config.rb
index b12dc28..4f75c75 100644
--- a/lib/redis_client/config.rb
+++ b/lib/redis_client/config.rb
@@ -41,7 +41,12 @@ def initialize(
       )
         @username = username
         @password = password
-        @db = db || DEFAULT_DB
+        @db = begin
+          Integer(db || DEFAULT_DB)
+        rescue ArgumentError
+          raise ArgumentError, "db: must be an Integer, got: #{db.inspect}"
+        end
+
         @id = id
         @ssl = ssl || false