pry--pry/spec/control_d_handler_spec.rb

require 'helper'

describe Pry::DEFAULT_CONTROL_D_HANDLER do

  describe "control-d press" do

    before do
      # Simulates a ^D press.
      @control_d = "Pry::DEFAULT_CONTROL_D_HANDLER.call('', _pry_)"
    end

    describe "in an expression" do
      it "should clear out passed string" do
        str = 'hello world'
        Pry::DEFAULT_CONTROL_D_HANDLER.call(str, nil)
        str.should == ''
      end
    end

    describe 'at top-level session' do
      it 'should break out of a REPL loop' do
        instance = Pry.new
        instance.binding_stack.should.not.be.empty
        instance.eval(nil).should.be.false
        instance.binding_stack.should.be.empty
      end
    end

    describe 'in a nested session' do
      it 'should pop last binding from the binding stack' do
        t = pry_tester
        t.eval "cd Object.new"
        t.eval("_pry_.binding_stack.size").should == 2
        t.eval("_pry_.eval(nil)").should.be.true
        t.eval("_pry_.binding_stack.size").should == 1
      end

      it "breaks out of the parent session" do
        pry_tester(:outer).simulate_repl do |o|
          o.context = :inner
          o.simulate_repl { |i|
            i.eval('_pry_.current_context.eval("self")').should == :inner
            i.eval('_pry_.binding_stack.size').should == 2
            i.eval('_pry_.eval(nil)')
            i.eval('_pry_.binding_stack.size').should == 1
            i.eval('_pry_.current_context.eval("self")').should == :outer
            i.eval 'throw :breakout'
          }
          o.eval 'exit-all'
        end
      end
    end

  end

end