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Changes between Initial Version and Version 1 of Ticket #26977, comment 5

initial	v1
1		Wouldn't doing unit tests on a abstract model class be an appropriate use case for instantiating an abstract class? If not, what is the recommended approach to unit testing abstract model logic?
	1	Wouldn't doing unit tests on a abstract model class be an appropriate use case for instantiating an abstract class? If not, what is the recommended approach to unit testing abstract model logic? (This is an actual situation in upgrading a project from 1.8 to 1.9. Unit tests for an abstract model class, used as a mixin, broke due to the change noted in this ticket.)