test/unread_test.rb in unread-0.0.3 vs test/unread_test.rb in unread-0.0.4

@@ -24,21 +24,29 @@
     assert_equal [@email1, @email2], Email.unread_by(@user)
     assert_equal [@email1, @email2], Email.unread_by(@other_user)
     
     assert_equal 2, Email.unread_by(@user).count
     assert_equal 2, Email.unread_by(@other_user).count
+    
+    assert_raise(ArgumentError) {
+      Email.unread_by(42)
+    }
   end
   
   def test_scope_after_reset
     @email1.mark_as_read! :for => @user
     
     assert_equal [@email2], Email.unread_by(@user)
     assert_equal 1, Email.unread_by(@user).count
   end
 
-  def test_unread_by
+  def test_unread_after_create
     assert_equal true, @email1.unread?(@user)
     assert_equal true, @email1.unread?(@other_user)
+    
+    assert_raise(ArgumentError) {
+      @email1.unread?(42)
+    }
   end
   
   def test_unread_after_update
     @email1.mark_as_read! :for => @user
     wait
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