diff --git a/tests/find_test.rb b/tests/find_test.rb
index 63bc9c7..22df1e2 100644
--- a/tests/find_test.rb
+++ b/tests/find_test.rb
@@ -31,8 +31,13 @@ module Tins
       assert_equal [ @work_dir, file ], find(@work_dir, :show_hidden => true).to_a
     end
 
-    if RUBY_PLATFORM !~ /java/
-      def test_check_directory_without_access
+    def test_check_directory_without_access
+      # do not run this test on JRuby
+      omit_if(RUBY_PLATFORM =~ /java/, "Can't run the test on JRuby")
+      # do not run this test if we're root, as it will fail.
+      omit_if(Process::UID.eid == 0, "Can't run the test as root")
+
+      begin
         mkdir_p directory1 = File.join(@work_dir, 'foo')
         mkdir_p directory2 = File.join(directory1, 'bar')
         touch file = File.join(directory2, 'file')
diff --git a/tests/test_helper.rb b/tests/test_helper.rb
index e56071a..fbb1635 100644
--- a/tests/test_helper.rb
+++ b/tests/test_helper.rb
@@ -4,4 +4,5 @@ if ENV['START_SIMPLECOV'].to_i == 1
     add_filter "#{File.basename(File.dirname(__FILE__))}/"
   end
 end
+gem 'test-unit', '~> 2.4'
 require 'test/unit'