Based on how the data is being sent to various tests and 'equals' method in the Message class, modified the equal method to make sure that the data being read is equal to the DLC. This is a temporary fix till we agree on what data should be used in the tests, especially pertaining to the BLFReader / BLFWriter constructors

Author: Pratik Mahamuni

can/message.py

@@ -321,7 +321,7 @@ def equals(
                 and self.arbitration_id == other.arbitration_id
                 and self.is_extended_id == other.is_extended_id
                 and self.dlc == other.dlc
-                and self.data == other.data
+                and self.data[: self.dlc] == other.data[: other.dlc]
                 and self.is_remote_frame == other.is_remote_frame
                 and self.is_error_frame == other.is_error_frame
                 and (self.channel == other.channel or not check_channel)