diff --git a/spec/types/entropy_mask_spec.rb b/spec/types/entropy_mask_spec.rb
new file mode 100644
index 0000000..89475a1
--- /dev/null
+++ b/spec/types/entropy_mask_spec.rb
@@ -0,0 +1,81 @@
+require 'spec_helper'
+
+describe Puppet::Type.type(:entropy_mask) do
+  before do
+    @provider = stub 'provider'
+    @provider.stubs(:name).returns(:parsed)
+    @provider.stubs(:ancestors).returns([Puppet::Provider::ParsedFile])
+    @provider.stubs(:default_target).returns("defaulttarget")
+    described_class.stubs(:defaultprovider).returns(@provider)
+  end
+
+  it "should be an instance of Puppet::Type::Entropy_mask" do
+    expect(described_class.new(:name => "test", :package => "app-admin/dummy")).to be_an_instance_of Puppet::Type::Entropy_mask
+  end
+
+  describe "when validating attributes" do
+    params     = [:name]
+    properties = [:package, :operator, :version, :slot, :use, :tag, :repo, :target]
+
+    params.each do |param|
+      it "should have the #{param} param" do
+        expect(described_class.attrtype(param)).to eq :param
+      end
+    end
+
+    properties.each do |property|
+      it "should have the #{property} property" do
+        expect(described_class.attrtype(property)).to eq :property
+      end
+    end
+
+  end
+
+  it "should have name as the namevar" do
+    expect(described_class.key_attributes).to eq [:name]
+  end
+
+  describe "when validating the target property" do
+    it "should default to the provider's default target" do
+      expect(described_class.new(:name => "test", :package => "app-admin/dummy").should(:target)).to eq "defaulttarget"
+    end
+  end
+
+  describe "when validating required properties" do
+    it "should raise an error when no required attributes are passed" do
+      expect {
+        described_class.new(:name => "test")
+      }.to raise_error(Puppet::Error, /At least one of (.*) is required/)
+    end
+
+    it "should raise an error when a version is passed with no package" do
+      expect {
+        described_class.new(:name => "test", :repo => "test", :version => "1.2.3")
+      }.to raise_error(Puppet::Error, /Package is required/)
+    end
+
+    it "should raise an error when an operator is passed with no version" do
+      expect {
+        described_class.new(:name => "test", :package => "app-admin/dummy", :operator => "<=")
+      }.to raise_error(Puppet::Error, /Version is required/)
+    end
+  end
+
+  describe "when the catalog includes a matching package" do
+    it "should have an autobefore relationship" do
+      mask = described_class.new(:name => "test", :package => "app-admin/dummy")
+      package = Puppet::Type.type(:package).new(:title => 'app-admin/dummy')
+
+      catalog = Puppet::Resource::Catalog.new
+      catalog.add_resource package
+      catalog.add_resource mask
+
+      befores = mask.autobefore
+      expect(befores.size).to eq 1
+      expect(befores[0].source).to eq mask
+      expect(befores[0].target).to eq package
+    end
+  end
+end
+
+# vim: set ts=2 sw=2 expandtab: