JsonMappingException when run as junit at Eclipse Amazon lambda function

Question

In Eclipse, i created a new Amazon lambda function to a dynamodb event. I didn't implement anything, the code is as the Amazon wizard creates the project.

When i run the test as junit, it returns:

com.fasterxml.jackson.databind.JsonMappingException: Conflicting setter definitions for property "eventName": com.amazonaws.services.dynamodbv2.model.Record#setEventName(1 params) vs com.amazonaws.services.dynamodbv2.model.Record#setEventName(1 params)

I try to solve this with @JsonIgnore, but i get the same result.

Any suggestion?

Carlos Tomas · Accepted Answer · 2016-02-21 18:46:32Z

2

I pass the junit test modifying the class of the object input from DynamodbEvent to Object at the test method:

public class LambdaFunctionHandlerTest {

//private static DynamodbEvent input;
private static Object input;

@BeforeClass
public static void createInput() throws IOException {
    //input = TestUtils.parse("dynamodb-update-event.json", DynamodbEvent.class);
    input = TestUtils.parse("dynamodb-update-event.json", Object.class);
}

And at the lambda function I change the class to the input object too:

public class LambdaFunctionHandler implements RequestHandler<Object, Object> {

@Override
public Object handleRequest(Object input, Context context) {

answered Feb 21, 2016 at 18:46

Carlos Tomas

817 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Shadowman Over a year ago

Did you ever get a better answer to this? I'm running into the exact same problem. In my code, parsing the JSON works just fine. However, when running it as a JUnit test I get the parsing exception.

Carlos Tomas Over a year ago

Sorry, I did not find a better answer to this.

Pierrick HYMBERT Over a year ago

Please have a look to Joost Den Boer workaround which solved problem for me.

Collectives™ on Stack Overflow

JsonMappingException when run as junit at Eclipse Amazon lambda function

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related