lala_spec.rb

require 'minitest/autorun'

describe 2 do
  i_suck_and_my_tests_are_order_dependent!

  describe '1' do
    it 'runs the spec in the same order' do
      puts '1'
    end

    it 'really runs the spec in the same order' do
      puts '2'
    end
  end

  describe '2' do
    it 'runs the spec in the same order' do
      puts '3'
    end

    it 'really runs the spec in the same order' do
      puts '4'
    end
  end
end

$ bundle
Resolving dependencies...
Using minitest 5.5.1 (was 5.5.0)
Using bundler 1.9.1
Bundle complete! 1 Gemfile dependency, 2 gems now installed.
Bundled gems are installed into ./vendor/gems.
$ bundle exec ruby lala_spec.rb
Run options: --seed 50400

# Running:

3
.4
.1
.2
.

Finished in 0.003384s, 1182.0331 runs/s, 0.0000 assertions/s.

4 runs, 0 assertions, 0 failures, 0 errors, 0 skips
$ bundle exec ruby lala_spec.rb
Run options: --seed 57613

# Running:

1
.2
.3
.4
.

Finished in 0.004859s, 823.2147 runs/s, 0.0000 assertions/s.

4 runs, 0 assertions, 0 failures, 0 errors, 0 skips

On versions before 5.3.4 it behaves like it should:

$ bundle
Using minitest 5.3.3
Using bundler 1.9.1
Bundle complete! 1 Gemfile dependency, 2 gems now installed.
Bundled gems are installed into ./vendor/gems.
$ bundle exec ruby lala_spec.rb
Run options: --seed 11798

# Running:

1
.2
.3
.4
.

Finished in 0.005156s, 775.7952 runs/s, 0.0000 assertions/s.

4 runs, 0 assertions, 0 failures, 0 errors, 0 skips