This is a bodge to make it possible for me to run focussed tests.

Specifically running tests in the alphagov/whitehall project which uses
a relatively old version of MiniTest. See also this issue [1].

I have little confidence this is a sensible fix, but it'll do for now.

[1] https://github.com/jgdavey/vim-turbux/issues/19
Hack so I can run @h-lame's view_test in alphagov/whitehall.

This is well nasty, but it'll do for now.