Add nullability annotations to tests in module/spring-boot-data-ldap-test

See gh-47263

module/spring-boot-data-ldap-test/build.gradle

@@ -44,3 +44,11 @@ dependencies {
 
 	testRuntimeOnly("ch.qos.logback:logback-classic")
 }
+
+tasks.named("compileTestJava") {
+	options.nullability.checking = "tests"
+}
+
+tasks.named("compileDockerTestJava") {
+	options.nullability.checking = "tests"
+}

module/spring-boot-data-ldap-test/src/test/java/org/springframework/boot/data/ldap/test/autoconfigure/ExampleEntry.java

@@ -18,6 +18,8 @@ package org.springframework.boot.data.ldap.test.autoconfigure;
 
 import javax.naming.Name;
 
+import org.jspecify.annotations.Nullable;
+
 import org.springframework.ldap.odm.annotations.Entry;
 import org.springframework.ldap.odm.annotations.Id;
 
@@ -30,13 +32,13 @@ import org.springframework.ldap.odm.annotations.Id;
 public class ExampleEntry {
 
 	@Id
-	private Name dn;
+	private @Nullable Name dn;
 
-	public Name getDn() {
+	public @Nullable Name getDn() {
 		return this.dn;
 	}
 
-	public void setDn(Name dn) {
+	public void setDn(@Nullable Name dn) {
 		this.dn = dn;
 	}