1 files changed, 56 insertions, 0 deletions
diff --git a/spec/ruby/core/binding/shared/clone.rb b/spec/ruby/core/binding/shared/clone.rb
new file mode 100644
index 0000000000..2d854fce96
--- /dev/null
+++ b/spec/ruby/core/binding/shared/clone.rb
@@ -0,0 +1,56 @@
+describe :binding_clone, shared: true do
+  before :each do
+    @b1 = BindingSpecs::Demo.new(99).get_binding
+    @b2 = @b1.send(@method)
+    @b3 = BindingSpecs::Demo.new(99).get_binding_in_block
+    @b4 = @b3.send(@method)
+  end
+
+  it "returns a copy of the Binding object" do
+    [[@b1, @b2, "a"],
+     [@b3, @b4, "a", "b"]].each do |b1, b2, *vars|
+      b1.should_not == b2
+
+      eval("@secret", b1).should == eval("@secret", b2)
+      eval("square(2)", b1).should == eval("square(2)", b2)
+      eval("self.square(2)", b1).should == eval("self.square(2)", b2)
+      vars.each do |v|
+        eval("#{v}", b1).should == eval("#{v}", b2)
+      end
+    end
+  end
+
+  it "is a shallow copy of the Binding object" do
+    [[@b1, @b2, "a"],
+     [@b3, @b4, "a", "b"]].each do |b1, b2, *vars|
+      vars.each do |v|
+        eval("#{v} = false", b1)
+        eval("#{v}", b2).should == false
+      end
+      b1.local_variable_set(:x, 37)
+      b2.local_variable_defined?(:x).should == false
+    end
+  end
+
+  ruby_version_is "3.4" do
+    it "copies instance variables" do
+      @b1.instance_variable_set(:@ivar, 1)
+      cl = @b1.send(@method)
+      cl.instance_variables.should == [:@ivar]
+    end
+
+    it "copies the finalizer" do
+      code = <<-'RUBY'
+        obj = binding
+
+        ObjectSpace.define_finalizer(obj, Proc.new { STDOUT.write "finalized\n" })
+
+        obj.clone
+
+        exit 0
+      RUBY
+
+      ruby_exe(code).lines.sort.should == ["finalized\n", "finalized\n"]
+    end
+  end
+end