1 files changed, 16 insertions, 0 deletions
diff --git a/spec/ruby/core/env/invert_spec.rb b/spec/ruby/core/env/invert_spec.rb
new file mode 100644
index 0000000000..42170230db
--- /dev/null
+++ b/spec/ruby/core/env/invert_spec.rb
@@ -0,0 +1,16 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "ENV.invert" do
+  before :each do
+    ENV["foo"] = "bar"
+  end
+
+  after :each do
+    ENV.delete "foo"
+  end
+
+  it "returns a hash with ENV.keys as the values and vice versa" do
+    ENV.invert["bar"].should == "foo"
+    ENV["foo"].should == "bar"
+  end
+end