Looks like jruby may need explicit test-unit dep

Gemfile

@@ -9,3 +9,7 @@ platform :rbx do
   gem 'racc'
 end
 
+platform :jruby do
+  gem 'test-unit'
+end
+

test/gemfiles/sass_3_2.gemfile

@@ -9,5 +9,8 @@ platform :rbx do
   gem 'racc'
 end
 
+platform :jruby do
+  gem 'test-unit'
+end
 
 gemspec path: '../../'

test/gemfiles/sass_3_3.gemfile

@@ -10,5 +10,8 @@ platform :rbx do
   gem 'racc'
 end
 
+platform :jruby do
+  gem 'test-unit'
+end
 
 gemspec path: '../../'

test/gemfiles/sass_head.gemfile

@@ -10,5 +10,8 @@ platform :rbx do
   gem 'racc'
 end
 
+platform :jruby do
+  gem 'test-unit'
+end
 
 gemspec path: '../../'