diff --git a/test/unit/vagrant/config/base_test.rb b/test/unit/vagrant/config/base_test.rb
new file mode 100644
index 000000000..918c3a0cf
--- /dev/null
+++ b/test/unit/vagrant/config/base_test.rb
@@ -0,0 +1,25 @@
+require File.expand_path("../../../base", __FILE__)
+
+describe Vagrant::Config::Base do
+  include_context "unit"
+
+  let(:foo_class) do
+    Class.new(described_class) do
+      attr_accessor :one
+      attr_accessor :two
+    end
+  end
+
+  it "should merge by default by simply copying each instance variable" do
+    one = foo_class.new
+    one.one = 2
+    one.two = 1
+
+    two = foo_class.new
+    two.two = 5
+
+    result = one.merge(two)
+    result.one.should == 2
+    result.two.should == 5
+  end
+end