From aa09c8583d6909470f2484fda7d6028945752912 Mon Sep 17 00:00:00 2001
From: Yanming Zhou <zhouyanming@gmail.com>
Date: Fri, 10 Oct 2025 17:43:46 +0800
Subject: [PATCH] Fix wrong variable name

See gh-47478

Signed-off-by: Yanming Zhou <zhouyanming@gmail.com>
---
 .../org/springframework/boot/test/json/JacksonTester.java     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/spring-boot-test/src/main/java/org/springframework/boot/test/json/JacksonTester.java b/core/spring-boot-test/src/main/java/org/springframework/boot/test/json/JacksonTester.java
index b2cfbc0e80e..94f3ff93779 100644
--- a/core/spring-boot-test/src/main/java/org/springframework/boot/test/json/JacksonTester.java
+++ b/core/spring-boot-test/src/main/java/org/springframework/boot/test/json/JacksonTester.java
@@ -56,7 +56,7 @@ import org.springframework.util.Assert;
  *     &#064;Before
  *     public void setup() {
  *         JsonMapper jsonMapper = new JsonMapper();
- *         JacksonTester.initFields(this, objectMapper);
+ *         JacksonTester.initFields(this, jsonMapper);
  *     }
  *
  *     &#064;Test
@@ -88,7 +88,7 @@ public class JacksonTester<T> extends AbstractJsonMarshalTester<T> {
 	 * @since 4.0.0
 	 */
 	protected JacksonTester(JsonMapper jsonMapper) {
-		Assert.notNull(jsonMapper, "'objectMapper' must not be null");
+		Assert.notNull(jsonMapper, "'jsonMapper' must not be null");
 		this.jsonMapper = jsonMapper;
 	}