learn-test produces NoMethodError for nilclass

[justinmcla]

 % Traceback (most recent call last):
	11: from /home/justin/.rvm/gems/ruby-2.6.1/bin/ruby_executable_hooks:24:in `<main>'
	10: from /home/justin/.rvm/gems/ruby-2.6.1/bin/ruby_executable_hooks:24:in `eval'
	 9: from /home/justin/.rvm/gems/ruby-2.6.1/bin/learn-test:23:in `<main>'
	 8: from /home/justin/.rvm/gems/ruby-2.6.1/bin/learn-test:23:in `load'
	 7: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/bin/learn-test:73:in `<top (required)>'
	 6: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:21:in `run'
	 5: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:21:in `fork'
	 4: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:22:in `block in run'
	 3: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:49:in `report_and_clean'
	 2: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/reporter.rb:13:in `report'
	 1: from /home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/reporter.rb:47:in `report'
/home/justin/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/strategies/mocha.rb:44:in `results': undefined method `[]' for nil:NilClass (NoMethodError)

Was able to submit using temporary workaround. Created ./test directory with empty js file and prevented the error. It looks like it is relying on the presence of at least some kind of test file.