DATACMNS-1613 - Fixed Chunk.getSize() for usage with an unpaged Pageable.

We now return the content length as size of a Chunk if no Pageable has been used to create a Chunk. This makes the usage of a Chunk without an explicit Pageable work just like it was requested with the size of the given content.

src/main/java/org/springframework/data/domain/Chunk.java

@@ -70,7 +70,7 @@ abstract class Chunk<T> implements Slice<T>, Serializable {
 	 * @see org.springframework.data.domain.Slice#getSize()
 	 */
 	public int getSize() {
-		return pageable.isPaged() ? pageable.getPageSize() : 0;
+		return pageable.isPaged() ? pageable.getPageSize() : content.size();
 	}
 
 	/*