undefined method 'formatter=' for module SimpleCov on `3.1.0`

[ArminBeda]

In the description under "Usage" the following instruction can be read:

require 'simplecov-cobertura'

SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter

But if you do it after with 3.1.0 the following error message can be read:

Failure/Error: SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter

NoMethodError:
  undefined method 'formatter=' for module SimpleCov

But if you do it in 2.1.0, this error is not present.

[arianna-h-h]

I'm having this same issue. @jessebs is there a workaround for this? I'm trying to upgrade from 2.1.0. Relevant merge request on GitLab. Thanks!

[tachyons]

require 'simplecov'
require 'simplecov-cobertura'

SimpleCov.formatter = SimpleCov::Formatter::CoberturaFormatter

Adding explicit require for 'simplecov' worked for me