1 files changed, 12 insertions, 0 deletions
diff --git a/spec/rubyspec/core/bignum/bignum_spec.rb b/spec/rubyspec/core/bignum/bignum_spec.rb
index b723718f69..cf99bb4937 100644
--- a/spec/rubyspec/core/bignum/bignum_spec.rb
+++ b/spec/rubyspec/core/bignum/bignum_spec.rb
@@ -4,4 +4,16 @@ describe "Bignum" do
   it "includes Comparable" do
     Bignum.include?(Comparable).should == true
   end
+
+  it ".allocate raises a TypeError" do
+    lambda do
+      Bignum.allocate
+    end.should raise_error(TypeError)
+  end
+
+  it ".new is undefined" do
+    lambda do
+      Bignum.new
+    end.should raise_error(NoMethodError)
+  end
 end