Update to ruby/spec@4bb0f25

* Specs added by TruffleRuby.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63654 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/spec/ruby/core/marshal/dump_spec.rb b/spec/ruby/core/marshal/dump_spec.rb
index 7718c118ef..f214abc31d 100644
--- a/spec/ruby/core/marshal/dump_spec.rb
+++ b/spec/ruby/core/marshal/dump_spec.rb
@@ -539,6 +539,16 @@ describe "Marshal.dump" do
 
   end
 
+  describe "when passed a StringIO" do
+
+    it "should raise an error" do
+      require "stringio"
+
+      lambda { Marshal.dump(StringIO.new) }.should raise_error(TypeError)
+    end
+
+  end
+
   it "raises a TypeError if marshalling a Method instance" do
     lambda { Marshal.dump(Marshal.method(:dump)) }.should raise_error(TypeError)
   end