require_relative '../../spec_helper' require_relative 'fixtures/classes' describe "Kernel.binding" do it "returns a binding for the caller" do Kernel.binding.eval("self").should == self end end describe "Kernel#binding" do it "is a private method" do Kernel.should have_private_instance_method(:binding) end before :each do @b1 = KernelSpecs::Binding.new(99).get_binding ScratchPad.clear end it "returns a Binding object" do @b1.kind_of?(Binding).should == true end it "encapsulates the execution context properly" do eval("@secret", @b1).should == 100 eval("a", @b1).should == true eval("b", @b1).should == true eval("@@super_secret", @b1).should == "password" eval("square(2)", @b1).should == 4 eval("self.square(2)", @b1).should == 4 eval("a = false", @b1) eval("a", @b1).should == false end it "raises a NameError on undefined variable" do -> { eval("a_fake_variable", @b1) }.should raise_error(NameError) end it "uses the closure's self as self in the binding" do m = mock(:whatever) eval('self', m.send(:binding)).should == self end it "uses the class as self in a Class.new block" do m = mock(:whatever) cls = Class.new { ScratchPad.record eval('self', m.send(:binding)) } ScratchPad.recorded.should == cls end end