Merge pull request #358 from e2/e2-fix_broken_env_delete

Fix broken ENV.delete on Windows

lib/aruba/platforms/windows_environment_variables.rb

@@ -81,8 +81,8 @@ def prepend(name, value)
         super(name.upcase, value)
       end
 
-      def delete(name, value)
-        super(name.upcase, value)
+      def delete(name)
+        super(name.upcase)
       end
     end
   end

spec/aruba/platform/windows_environment_variables_spec.rb

@@ -497,4 +497,18 @@ class KeyError < StandardError; end
       end
     end
   end
+
+  describe '#delete' do
+    let(:variable) { 'my_variable' }
+    let(:old_environment) { { 'MY_VARIABLE' => '1' } }
+
+    it "deletes a value from the environment" do
+      environment.delete(variable)
+      expect(environment[variable]).to eq nil
+    end
+
+    it "returns deleted value" do
+      expect(environment.delete(variable)).to eq('1')
+    end
+  end
 end