Limiting output in test tooltip/test results

[grav]

I had a test fail, in which my function under test happened to output approx. the whole database instead of a couple of rows.

This made the tool tip (which is instantly activated when you hover the failing test) take a few minutes to appear. Meanwhile, IDEA was hanging. The test-results window also took quite some time to appear.

Maybe there should be a limit on the output in both the tool tip and the Test Results window, since you'd seldom want to visually diff that much data anyway.

Btw the test integration is awesome in general :-)