diff --git a/Library/Homebrew/test/test_superenv.rb b/Library/Homebrew/test/test_superenv.rb
new file mode 100644
index 0000000000..791502c6c1
--- /dev/null
+++ b/Library/Homebrew/test/test_superenv.rb
@@ -0,0 +1,25 @@
+require 'testing_env'
+require 'extend/ENV/super'
+
+class SuperenvTests < Test::Unit::TestCase
+  attr_reader :env, :bin
+
+  def setup
+    @env = {}.extend(Superenv)
+    @bin = HOMEBREW_REPOSITORY/"Library/ENV/#{MacOS::Xcode.version}"
+    bin.mkpath
+  end
+
+  def test_bin
+    assert_equal bin, Superenv.bin
+  end
+
+  def test_initializes_deps
+    assert_equal [], env.deps
+    assert_equal [], env.keg_only_deps
+  end
+
+  def teardown
+    bin.rmtree
+  end
+end