Can't run Simpletest when Cache Consistent is in the codebase

Fixing the above error lead to this error:
Fatal error: Interface 'CacheVariableHandlerInterface' not found in sites/all/modules/contrib/cache_consistent/tests/cache_consistent.test.inc on line 430

So in order to fix the first error I loaded the cache_consistent.test.inc file at the top of each test file, and then to fix the second error I loaded cache_consistent.inc at the top of the cache_consistent.test.inc file.

FYI there was a similar problem with Redis: #2666866: Unable to run tests: Class 'Redis_Tests_Cache_FixesUnitTestCase' not found

In theory. However, I suspect that Simpletest is sorting the list of files alphabetically and loading them in that order, rather than in the order they're listed in the info file. BICBW. The reason I wonder about the file ordering is that the cache_consistent.buffer.test file *does* have a require_once() line, apparently to fix the same problem.

So, in short, this is an existing problem with the buffer.test filethat was fixed by adding the require_once() line, so the others should be fixed this way too.

It might be because the CacheConsistentTestHelper class is in a 'use' statement instead of being extended?

Also, the 'use' statements are inside the class definitions instead of outside. Moving them outside fixes the problem of CacheConsistentTestHelper not being loaded but still leaves ConsistentCacheTestCaseBase unavailable.

Ok, lets ignore #7 then.

I'm running 5.6.10 locally (from MAMP). Tests are disabled for this module, so it's hard to compare the tests across PHP versions.

BTW should ConsistentCacheTestCaseBase be an abstract class?

Thanks!