From 81ded2a0e59d8e6b34434a169745fffc43db4f73 Mon Sep 17 00:00:00 2001
From: Josh Cummings <josh.cummings@gmail.com>
Date: Wed, 30 Jun 2021 10:12:27 -0600
Subject: [PATCH] Polish Assertion

By using the supplier version of Assert.notNull, the
string concatenation is delayed.

Issue gh-3403
---
 .../security/provisioning/InMemoryUserDetailsManager.java      | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/org/springframework/security/provisioning/InMemoryUserDetailsManager.java b/core/src/main/java/org/springframework/security/provisioning/InMemoryUserDetailsManager.java
index 72427296d7..c613035a05 100644
--- a/core/src/main/java/org/springframework/security/provisioning/InMemoryUserDetailsManager.java
+++ b/core/src/main/java/org/springframework/security/provisioning/InMemoryUserDetailsManager.java
@@ -79,7 +79,8 @@ public class InMemoryUserDetailsManager implements UserDetailsManager, UserDetai
 			String name = (String) names.nextElement();
 			editor.setAsText(users.getProperty(name));
 			UserAttribute attr = (UserAttribute) editor.getValue();
-			Assert.notNull(attr, "The entry with username '" + name + "' could not be converted to an UserDetails");
+			Assert.notNull(attr,
+					() -> "The entry with username '" + name + "' could not be converted to an UserDetails");
 			createUser(createUserDetails(name, attr));
 		}
 	}