# coding: utf-8
require 'helper'

describe "Pry#input_stack" do
  before do
    @str_output = StringIO.new
  end

  it 'should accept :input_stack as a config option' do
    stack = [StringIO.new("test")]
    Pry.new(:input_stack => stack).input_stack.should == stack
  end

  it 'should use defaults from Pry.config' do
    Pry.config.input_stack = [StringIO.new("exit")]
    Pry.new.input_stack.should == Pry.config.input_stack
    Pry.config.input_stack = []
  end

  it 'should read from all input objects on stack and exit session' do
    stack = [b = StringIO.new(":cloister\nexit\n"), c = StringIO.new(":baron\n")]
    Object.new.pry :input => StringIO.new(":alex\n"),
                    :output => @str_output,
                    :input_stack => stack

    @str_output.string.should =~ /:alex/
    @str_output.string.should =~ /:baron/
    @str_output.string.should =~ /:cloister/
  end

  it 'input objects should be popped off stack as they are used up' do
    stack = [StringIO.new(":cloister\n"), StringIO.new(":baron\n")]
    repl = Pry::REPL.new :input => StringIO.new(":alex\n"),
                         :output => @str_output,
                         :input_stack => stack
    stack.size.should == 2
    repl.send(:retrieve_line).should == ":alex\n"
    stack.size.should == 2
    repl.send(:retrieve_line).should == ":baron\n"
    stack.size.should == 1
    repl.send(:retrieve_line).should == ":cloister\n"
    stack.size.should == 0
  end

  it 'should revert to Pry.config.input when it runs out of input objects in input_stack' do
    redirect_pry_io(StringIO.new(":rimbaud\nexit\n"), StringIO.new) do
      stack = [StringIO.new(":cloister\n"), StringIO.new(":baron\n")]
      Object.new.pry :input => StringIO.new(":alex\n"),
                     :output => @str_output,
                     :input_stack => stack

      @str_output.string.should =~ /:alex/
      @str_output.string.should =~ /:baron/
      @str_output.string.should =~ /:cloister/
      @str_output.string.should =~ /:rimbaud/
    end
  end

  it 'should display error and throw(:breakout) if at end of input after using up input_stack objects' do
    catch(:breakout) do
      redirect_pry_io(StringIO.new(":rimbaud\n"), @str_output) do
        Object.new.pry :input_stack => [StringIO.new(":a\n"), StringIO.new(":b\n")]
      end
    end
    @str_output.string.should =~ /Error: Pry ran out of things to read/
  end

  if "".respond_to?(:encoding)
    after do
      Pry.line_buffer = [""]
      Pry.current_line = 1
    end
    it "should pass strings to Pry in the right encoding" do
      input1 = "'f｡｡'.encoding.name" # utf-8, see coding declaration
      input2 = input1.encode('Shift_JIS')

      mock_pry(input1, input2).should == %{=> "UTF-8"\n=> "Shift_JIS"\n}
    end

    it "should be able to use unicode regexes on a UTF-8 terminal" do
      mock_pry('":-Þ" =~ /þ/i').should == %{=> 2\n}
    end
  end
end