Add test for corner-case of having data_base64 as an extension in V03 (#627)
Add test for corner-case of having data_base64 as an extension in V03 (#627)

* Add test for corner-case of having data_base64 as an extension in V03

Signed-off-by: Markus Thömmes <d19e0d57c6ca20d23ad78646c7834a3545415400@me.com>

* Add another test

Signed-off-by: Markus Thömmes <d19e0d57c6ca20d23ad78646c7834a3545415400@me.com>
cloudevents/sdk-go,cloudevents/sdk-go