UPDATE

#teardown is probably a better way of achieving the desired outcome

---

MiniTest allows ensure blocks, even with Rails syntax 🎉

I already knew Ruby methods (and classes) could have ensure blocks:

def some_method
  do_something_that_might_blow_up
ensure
  tidy_up_regardless
end

…and I knew MiniTest tests are just standard ruby methods:

def test_some_functionality
  assert true
end

…but I wasn’t sure if the two worked together using Rails’ test macro that lets you write nicer test names:

test "the truth" do
  assert true
end

After spending some too much time trying to find an answer I eventually realised I should just try it out and see:

test 'the truth' do
  assert true
  raise StandardError
ensure
  refute false
  puts 'Clean up!'
end

And it worked! I see ‘Clean up!’ in the console and both assertions get called (in addition to the error being raised):
1 tests, 2 assertions, 0 failures, 1 errors, 0 skips