2 files changed, 18 insertions, 0 deletions
diff --git a/spec/acceptance/is_string_spec.rb b/spec/acceptance/is_string_spec.rb
index 94d8e96..f526888 100755
--- a/spec/acceptance/is_string_spec.rb
+++ b/spec/acceptance/is_string_spec.rb
@@ -95,6 +95,17 @@ describe 'is_string function', :unless => UNSUPPORTED_PLATFORMS.include?(fact('o
         expect(r.stdout).to match(/Notice: output correct/)
       end
     end
+    it 'is_strings undef' do
+      pp = <<-EOS
+      $a = undef
+      $o = is_string($a)
+      notice(inline_template('is_string is <%= @o.inspect %>'))
+      EOS
+
+      apply_manifest(pp, :catch_failures => true) do |r|
+        expect(r.stdout).to match(/is_string is true/)
+      end
+    end
   end
   describe 'failure' do
     it 'handles improper argument counts'
diff --git a/spec/acceptance/validate_string_spec.rb b/spec/acceptance/validate_string_spec.rb
index 8956f48..ae3468f 100755
--- a/spec/acceptance/validate_string_spec.rb
+++ b/spec/acceptance/validate_string_spec.rb
@@ -20,6 +20,13 @@ describe 'validate_string function', :unless => UNSUPPORTED_PLATFORMS.include?(f
 
       apply_manifest(pp, :catch_failures => true)
     end
+    it 'validates undef' do
+      pp = <<-EOS
+      validate_string(undef)
+      EOS
+
+      apply_manifest(pp, :catch_failures => true)
+    end
     it 'validates a non-string' do
       {
         %{validate_string({ 'a' => 'hash' })} => "Hash",