#
# specifying podoff
#
# Tue Oct 20 13:11:38 JST 2015
#

require 'spec_helper'


describe Podoff do

  describe '.load' do

    it 'loads a PDF document' do

      d = Podoff.load('pdfs/t0.pdf', 'utf-8')

      expect(d.class).to eq(Podoff::Document)
      expect(d.objs.keys).to eq([ '1 0', '2 0', '3 0', '4 0', '5 0', '6 0' ])
      expect(d.xref).to eq(413)

      #pp d.objs.values.collect(&:to_a)

      expect(d.objs['1 0'].to_a).to eq(
        [ '1 0', 9, 54, { type: '/Catalog' } ])
      expect(d.objs['3 0'].to_a).to eq(
        [ '3 0', 111, 213, { type: '/Page', contents: '6 0 R' } ])

      expect(d.objs.values.first.document).not_to be(nil)

      expect(d.obj_counters.keys).to eq(
        [ '1 0', '2 0', '3 0', '4 0', '5 0', '6 0' ])
      expect(d.obj_counters.values).to eq(
        [ 1, 1, 1, 1, 1, 1 ])

      expect(d.root).to eq('1 0')

      expect(d.pages.size).to eq(1)
    end

    it 'loads a PDF document' do

      d = Podoff.load('pdfs/udocument0.pdf', 'iso-8859-1')

      expect(d.class).to eq(Podoff::Document)
      expect(d.xref).to eq(1612815)
      expect(d.objs.size).to eq(273)
      expect(d.objs.keys).to include('1 0')
      expect(d.objs.keys).to include('273 0')

      expect(d.root).to eq('1 0')

      expect(d.pages.size).to eq(3)
    end

    it 'loads a PDF document with incremental updates' do

      d = Podoff.load('pdfs/t1.pdf', 'utf-8')

      expect(d.class).to eq(Podoff::Document)
      expect(d.xref).to eq(704)
      expect(d.objs.keys).to eq([ '1 0', '2 0', '3 0', '4 0', '5 0', '6 0' ])

      expect(d.obj_counters.keys).to eq(
        [ '1 0', '2 0', '3 0', '4 0', '5 0', '6 0' ])
      expect(d.obj_counters.values).to eq(
        [ 1, 1, 1, 1, 1, 2 ])

      expect(d.root).to eq('1 0')
    end

    it 'loads a [re]compressed PDF documents' do

      d = Podoff.load('pdfs/qdocument0.pdf', 'iso-8859-1')

      expect(d.class).to eq(Podoff::Document)
      expect(d.xref).to eq(1612815)
      expect(d.objs.size).to eq(273)

      expect(d.root).to eq('1 0')

      #d.objs.each do |ref, o|
      #  p [ o.ref, o.attributes ]
      #end

      expect(d.pages.size).to eq(3)
      expect(d.objs['46 0'].attributes[:type]).to eq('/Annot')
    end

    it 'rejects items that are not PDF documents' do

      expect {
        Podoff.load('spec/spec_helper.rb', 'utf-8')
      }.to raise_error(ArgumentError, 'not a PDF file')
    end
  end
end