diff --git a/spec/validates_timeliness/validator_spec.rb b/spec/validates_timeliness/validator_spec.rb
index 83f8845..0a0f0c1 100644
--- a/spec/validates_timeliness/validator_spec.rb
+++ b/spec/validates_timeliness/validator_spec.rb
@@ -46,6 +46,17 @@ describe ValidatesTimeliness::Validator do
       Person.validates_date :birth_date, :allow_nil => true
       valid!(:birth_date, NIL)
     end
+
+    context "with raw value cache" do
+      it "should not be valid with an invalid format" do
+        PersonWithShim.validates_date :birth_date, :allow_nil => true
+
+        p = PersonWithShim.new
+        p.birth_date = 'bogus'
+
+        p.should_not be_valid
+      end
+    end
   end
 
   describe ":allow_blank option" do
@@ -59,6 +70,17 @@ describe ValidatesTimeliness::Validator do
       Person.validates_date :birth_date, :allow_blank => true
       valid!(:birth_date, '')
     end
+
+    context "with raw value cache" do
+      it "should not be valid with an invalid format" do
+        PersonWithShim.validates_date :birth_date, :allow_blank => true
+
+        p = PersonWithShim.new
+        p.birth_date = 'bogus'
+
+        p.should_not be_valid
+      end
+    end
   end
 
   describe ":between option" do