DATAREDIS-1179 - Allow reuse of RedisConverter in ObjectHashMapper.

Original pull request: #548.

src/test/java/org/springframework/data/redis/mapping/ObjectHashMapperTests.java

@@ -17,10 +17,15 @@ package org.springframework.data.redis.mapping;
 
 import static org.assertj.core.api.Assertions.*;
 
+import lombok.Data;
+
+import java.util.Collections;
 import java.util.Map;
 
 import org.junit.Test;
-
+import org.springframework.data.annotation.TypeAlias;
+import org.springframework.data.redis.core.convert.MappingRedisConverter;
+import org.springframework.data.redis.core.mapping.RedisMappingContext;
 import org.springframework.data.redis.hash.ObjectHashMapper;
 
 /**
@@ -57,4 +62,29 @@ public class ObjectHashMapperTests extends AbstractHashMapperTest {
 
 		String result = objectHashMapper.fromHash(hash, String.class);
 	}
+
+	@Test // DATAREDIS-1179
+	public void hashMapperAllowsReuseOfRedisConverter/*and thus the MappingContext holding eg. TypeAlias information*/() {
+
+		WithTypeAlias source = new WithTypeAlias();
+		source.value = "val";
+		Map<byte[], byte[]> hash = new ObjectHashMapper().toHash(source);
+
+		RedisMappingContext ctx = new RedisMappingContext();
+		ctx.setInitialEntitySet(Collections.singleton(WithTypeAlias.class));
+		ctx.afterPropertiesSet();
+
+		MappingRedisConverter mappingRedisConverter = new MappingRedisConverter(ctx, null, null);
+		mappingRedisConverter.afterPropertiesSet();
+
+		ObjectHashMapper objectHashMapper = new ObjectHashMapper(mappingRedisConverter);
+		assertThat(objectHashMapper.fromHash(hash)).isEqualTo(source);
+	}
+
+	@TypeAlias("_42_")
+	@Data
+	static class WithTypeAlias {
+		String value;
+	}
+
 }