AbstractDynamoDBEventListener throws assertion error

[ethanjcohen-underarmour]

Expected Behavior

The event listener should only handle objects of the expected type, and should not throw an assertion error.

Actual Behavior

The event handler throws an assertion error during junit tests when a dynamo object is saved that is not of the same type (or interface, in my case).

The assertion is here: https://github.com/derjust/spring-data-dynamodb/blob/master/src/main/java/org/socialsignin/spring/data/dynamodb/mapping/event/AbstractDynamoDBEventListener.java#L113

My question is - why the assertion? The parameterization on this class implies that this event handler is specific to certain object types but that's not really true if it consumes and then fails on other types during tests. Can we remove the assertion?

Steps to Reproduce the Problem

1. Extend the class AbstractDynamoDBEventListener with some interface as the generic parameter, like "T extends MyInterface"
2. Save an entity that does not implement MyInterface in a test
3. Assertion error fails the test

Specifications

• Spring Data DynamoDB Version: 5.1.0-SNAPSHOT (2.1)
• Spring Data Version: 2.1.3.RELEASE
• AWS SDK Version: 1.11.472
• Java Version: 11.0.1 - Java HotSpot(TM) 64-Bit Server VM 11.0.1+13-LTS
• Platform Details: Mac OS X 10.14.6