learn test returns a NoMethodError for NilClass

[justinmcla]

Traceback (most recent call last):
	11: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/bin/ruby_executable_hooks:24:in `<main>'
	10: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/bin/ruby_executable_hooks:24:in `eval'
	 9: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/bin/learn-test:23:in `<main>'
	 8: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/bin/learn-test:23:in `load'
	 7: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/bin/learn-test:73:in `<top (required)>'
	 6: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:21:in `run'
	 5: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:21:in `fork'
	 4: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:22:in `block in run'
	 3: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/runner.rb:49:in `report_and_clean'
	 2: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/reporter.rb:13:in `report'
	 1: from /Users/justinmclawhorn/.rvm/gems/ruby-2.6.1/gems/learn-test-3.3.1/lib/learn_test/reporter.rb:47:in `report'
/Users/justinmclawhorn/.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)

This is the same error from a previous code along (here). Presumably, the lack of a test file is causing the error. Temporary workaround is to create a test directory and add an empty js file. learn test will then auto-submit to Canvas.