test/minitest_config.rb in stockpile-1.1 vs test/minitest_config.rb in stockpile-2.0

@@ -1,6 +1,6 @@
-# -*- ruby encoding: utf-8 -*-
+# frozen_string_literal: true
 
 gem 'minitest'
 require 'minitest/autorun'
 require 'minitest/pretty_diff'
 require 'minitest/focus'
@@ -16,14 +16,10 @@
   end
 
   def stub_env env, options = {}, *block_args, &block
     mock = lambda { |key|
       env.fetch(key) { |k|
-        if options[:passthrough]
-          ENV.send(:"__minitest_stub__[]", k)
-        else
-          nil
-        end
+        ENV.send(:"__minitest_stub__[]", k) if options[:passthrough]
       }
     }
 
     if defined? Minitest::Moar::Stubbing
       stub ENV, :[], mock, *block_args, &block