Ensure buildability on JDK 16.

Properly initialize the MongoMappingContext in unit tests when using special identifier types. Explicitly add javax.annotation as dependency in shop tests.

spring-data-rest-tests/spring-data-rest-tests-mongodb/src/test/java/org/springframework/data/rest/webmvc/config/JsonPatchHandlerUnitTests.java

@@ -21,6 +21,7 @@ import static org.springframework.data.rest.tests.mongodb.TestUtils.*;
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
@@ -28,6 +29,7 @@ import org.junit.jupiter.api.extension.ExtendWith;
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.data.mapping.context.PersistentEntities;
+import org.springframework.data.mongodb.core.convert.MongoCustomConversions;
 import org.springframework.data.mongodb.core.mapping.MongoMappingContext;
 import org.springframework.data.rest.core.config.RepositoryRestConfiguration;
 import org.springframework.data.rest.core.mapping.ResourceMappings;
@@ -56,7 +58,10 @@ class JsonPatchHandlerUnitTests {
 	@BeforeEach
 	void setUp() {
 
+		MongoCustomConversions conversions = new MongoCustomConversions(Collections.emptyList());
+
 		MongoMappingContext context = new MongoMappingContext();
+		context.setSimpleTypeHolder(conversions.getSimpleTypeHolder());
 		context.getPersistentEntity(User.class);
 
 		PersistentEntities entities = new PersistentEntities(Arrays.asList(context));

spring-data-rest-tests/spring-data-rest-tests-shop/pom.xml

@@ -30,6 +30,15 @@
 			<version>${springdata.keyvalue}</version>
 		</dependency>
 
+		<!-- Explicit declaration required on Java 11 and above-->
+
+		<dependency>
+			<groupId>javax.annotation</groupId>
+			<artifactId>javax.annotation-api</artifactId>
+			<version>1.3.2</version>
+			<scope>test</scope>
+		</dependency>
+
 	</dependencies>
 
 </project>