1 files changed, 8 insertions, 1 deletions
diff --git a/spec/ruby/library/stringscanner/element_reference_spec.rb b/spec/ruby/library/stringscanner/element_reference_spec.rb
index 60fe15d807..91b6d86dc7 100644
--- a/spec/ruby/library/stringscanner/element_reference_spec.rb
+++ b/spec/ruby/library/stringscanner/element_reference_spec.rb
@@ -8,6 +8,7 @@ describe "StringScanner#[]" do
 
   it "returns nil if there is no current match" do
     @s[0].should be_nil
+    @s[:wday].should be_nil
   end
 
   it "returns the n-th subgroup in the most recent match" do
@@ -42,12 +43,18 @@ describe "StringScanner#[]" do
     -> { @s[0..2]}.should raise_error(TypeError)
   end
 
-  it "raises a IndexError when there's no named capture" do
+  it "raises a IndexError when there's no any named capture group in the regexp" do
     @s.scan(/(\w+) (\w+) (\d+) /)
     -> { @s["wday"]}.should raise_error(IndexError)
     -> { @s[:wday]}.should raise_error(IndexError)
   end
 
+  it "raises a IndexError when given a not existing capture group name" do
+    @s.scan(/(?<a>\w+) (?<b>\w+) (?<c>\d+) /)
+    -> { @s["wday"]}.should raise_error(IndexError)
+    -> { @s[:wday]}.should raise_error(IndexError)
+  end
+
   it "returns named capture" do
     @s.scan(/(?<wday>\w+) (?<month>\w+) (?<day>\d+) /)
     @s["wday"].should == "Fri"