1 files changed, 6 insertions, 0 deletions
diff --git a/spec/ruby/library/stringscanner/skip_until_spec.rb b/spec/ruby/library/stringscanner/skip_until_spec.rb
index 73eb91b8ad..7b56f13e4f 100644
--- a/spec/ruby/library/stringscanner/skip_until_spec.rb
+++ b/spec/ruby/library/stringscanner/skip_until_spec.rb
@@ -15,4 +15,10 @@ describe "StringScanner#skip_until" do
   it "returns nil if no match was found" do
     @s.skip_until(/d+/).should == nil
   end
+
+  it "raises TypeError if given a String" do
+    -> {
+      @s.skip_until('T')
+    }.should raise_error(TypeError, 'wrong argument type String (expected Regexp)')
+  end
 end