1 files changed, 8 insertions, 0 deletions
diff --git a/spec/ruby/core/proc/compose_spec.rb b/spec/ruby/core/proc/compose_spec.rb
index 803a32af7b..94814d11bc 100644
--- a/spec/ruby/core/proc/compose_spec.rb
+++ b/spec/ruby/core/proc/compose_spec.rb
@@ -61,9 +61,17 @@ describe "Proc#<<" do
         g = proc { |x| x + x }
         lambda_proc = -> x { x }
 
+        # lambda << proc
         (f << g).is_a?(Proc).should == true
         (f << g).should_not.lambda?
+
+        # lambda << lambda
+        (f << lambda_proc).is_a?(Proc).should == true
         (f << lambda_proc).should.lambda?
+
+        # proc << lambda
+        (g << f).is_a?(Proc).should == true
+        (g << f).should.lambda?
       end
     end