Adding DynamoDBEntityMetadataSupport unit tests

* Moving the DynamoDBMarshaller annotation for the User.joinYear property
from the getter method to the field.
* Adding unit tests to test both field and method retrieval.

Author: Michael Wolfe

src/test/java/org/socialsignin/spring/data/dynamodb/domain/sample/User.java

@@ -35,7 +35,8 @@ public class User {
 	private Integer numberOfPlaylists;
 
 	private Date joinDate;
-	
+
+	@DynamoDBMarshalling(marshallerClass=DynamoDBYearMarshaller.class)
 	private Date joinYear;
 
 	private Instant leaveDate;
@@ -61,7 +62,6 @@ public void setJoinDate(Date joinDate) {
 		this.joinDate = joinDate;
 	}
 
-	@DynamoDBMarshalling(marshallerClass=DynamoDBYearMarshaller.class)
 	public Date getJoinYear() {
 		return joinYear;
 	}

src/test/java/org/socialsignin/spring/data/dynamodb/repository/support/DynamoDBEntityMetadataSupportUnitTest.java

@@ -0,0 +1,34 @@
+package org.socialsignin.spring.data.dynamodb.repository.support;
+
+import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMarshaller;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.socialsignin.spring.data.dynamodb.domain.sample.Playlist;
+import org.socialsignin.spring.data.dynamodb.domain.sample.PlaylistId;
+import org.socialsignin.spring.data.dynamodb.domain.sample.User;
+
+@RunWith(MockitoJUnitRunner.class)
+@SuppressWarnings("unused")
+public class DynamoDBEntityMetadataSupportUnitTest {
+	
+	@Test
+	public void testGetMarshallerForProperty_WhenAnnotationIsOnField_AndReturnsDynamoDBMarshaller()
+	{
+		DynamoDBEntityMetadataSupport support = new DynamoDBEntityMetadataSupport(User.class);
+		DynamoDBMarshaller fieldAnnotation = support.getMarshallerForProperty("joinYear");
+		Assert.assertNotNull(fieldAnnotation);
+	}
+
+	@Test
+	public void testGetMarshallerForProperty_WhenAnnotationIsOnMethod_AndReturnsDynamoDBMarshaller()
+	{
+		DynamoDBEntityMetadataSupport support = new DynamoDBEntityMetadataSupport(User.class);
+		DynamoDBMarshaller methodAnnotation = support.getMarshallerForProperty("leaveDate");
+		Assert.assertNotNull(methodAnnotation);
+	}
+}