Add test for fetching unknown keys without defaults

1 files changed, 4 insertions, 0 deletions

diff --git a/test/spec_session_abstract_session_hash.rb b/test/spec_session_abstract_session_hash.rb
index 16b06c7b..76b34a01 100644
--- a/test/spec_session_abstract_session_hash.rb
+++ b/test/spec_session_abstract_session_hash.rb
@@ -37,5 +37,9 @@ describe Rack::Session::Abstract::SessionHash do
     it "works with a block" do
       assert_equal :default, hash.fetch(:unkown) { :default }
     end
+
+    it "it raises when fetching unknown keys without defaults" do
+      lambda { hash.fetch(:unknown) }.must_raise KeyError
+    end
   end
 end