add test_all rake task

1 files changed, 4 insertions, 0 deletions

diff --git a/Rakefile b/Rakefile
index cf8c27a..6ef7542 100644
--- a/Rakefile
+++ b/Rakefile
@@ -3,4 +3,8 @@ task :test do
   Dir.glob("test/*_test.rb").each { |test| require "./#{test}" }
 end
 
+task :test_all do
+  sh "rvm 1.8.7,ruby,rbx,1.9.2 exec rake test"
+end
+
 task :default => :test
\ No newline at end of file