Merge pull request #218 from Shopify/rwstauner/load-paths

Support multiple -I args

ruby/lib/minitest/queue/runner.rb

@@ -421,7 +421,7 @@ def parser
           EOS
           opts.separator ""
           opts.on('-IPATHS', help) do |paths|
-            self.load_paths = paths
+            self.load_paths = [load_paths, paths].compact.join(':')
           end
 
           help = <<~EOS

ruby/test/minitest/queue/runner_test.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+require 'minitest/queue/runner'
+require 'test_helper'
+
+module Minitest::Queue
+  class RunnerTest < Minitest::Test
+    def test_multiple_load_paths
+      runner = Runner.new(["-Ilib:test", "-Ielse"])
+      assert_equal("lib:test:else", runner.send(:load_paths))
+    end
+  end
+end