5 files changed, 18 insertions, 21 deletions
diff --git a/spec/ruby/core/binding/dup_spec.rb b/spec/ruby/core/binding/dup_spec.rb
index 55fac6e333..4eff66bd9a 100644
--- a/spec/ruby/core/binding/dup_spec.rb
+++ b/spec/ruby/core/binding/dup_spec.rb
@@ -10,4 +10,21 @@ describe "Binding#dup" do
     bind.frozen?.should == true
     bind.dup.frozen?.should == false
   end
+
+  it "retains original binding variables but the list is distinct" do
+    bind1 = binding
+    eval "a = 1", bind1
+
+    bind2 = bind1.dup
+    eval("a = 2", bind2)
+    eval("a", bind1).should == 2
+    eval("a", bind2).should == 2
+
+    eval("b = 2", bind2)
+    -> { eval("b", bind1) }.should raise_error(NameError)
+    eval("b", bind2).should == 2
+
+    bind1.local_variables.sort.should == [:a, :bind1, :bind2]
+    bind2.local_variables.sort.should == [:a, :b, :bind1, :bind2]
+  end
 end
diff --git a/spec/ruby/core/binding/fixtures/irb.rb b/spec/ruby/core/binding/fixtures/irb.rb
deleted file mode 100644
index 5f305f2d5d..0000000000
--- a/spec/ruby/core/binding/fixtures/irb.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-a = 10
-
-binding.irb
diff --git a/spec/ruby/core/binding/fixtures/irbrc b/spec/ruby/core/binding/fixtures/irbrc
deleted file mode 100644
index 2bc12af2f7..0000000000
--- a/spec/ruby/core/binding/fixtures/irbrc
+++ /dev/null
@@ -1 +0,0 @@
-# empty configuration
diff --git a/spec/ruby/core/binding/irb_spec.rb b/spec/ruby/core/binding/irb_spec.rb
deleted file mode 100644
index b3bc274f78..0000000000
--- a/spec/ruby/core/binding/irb_spec.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-require_relative '../../spec_helper'
-
-describe "Binding#irb" do
-  it "creates an IRB session with the binding in scope" do
-    irb_fixture = fixture __FILE__, "irb.rb"
-    irbrc_fixture = fixture __FILE__, "irbrc"
-
-    out = IO.popen([{"IRBRC"=>irbrc_fixture}, *ruby_exe, irb_fixture], "r+") do |pipe|
-      pipe.puts "a ** 2"
-      pipe.puts "exit"
-      pipe.readlines.map(&:chomp)
-    end
-
-    out[-3..-1].should == ["a ** 2", "100", "exit"]
-  end
-end
diff --git a/spec/ruby/core/binding/shared/clone.rb b/spec/ruby/core/binding/shared/clone.rb
index 1224b8ec7d..2d854fce96 100644
--- a/spec/ruby/core/binding/shared/clone.rb
+++ b/spec/ruby/core/binding/shared/clone.rb
@@ -40,7 +40,7 @@ describe :binding_clone, shared: true do
     end
 
     it "copies the finalizer" do
-      code = <<-RUBY
+      code = <<-'RUBY'
         obj = binding
 
         ObjectSpace.define_finalizer(obj, Proc.new { STDOUT.write "finalized\n" })