require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')

require "fileutils"
include FileUtils

describe "tar backup" do
  before(:all) do
    # need both local and instance vars
    # instance variables are used in tests
    # local variables are used in the backup definition (instance vars can't be seen)
    @root = root = "tmp/archive_backup_example"

    # clean state
    rm_rf @root
    mkdir_p @root

    # create source tree
    @src = src = "#{@root}/src"
    mkdir_p "#{@src}/q/w/e"
    mkdir_p "#{@src}/a/s/d"

    File.open("#{@src}/qwe1", "w") {|f| f.write("qwe") }
    File.open("#{@src}/q/qwe2", "w") {|f| f.write("qwe"*2) }
    File.open("#{@src}/q/w/qwe3", "w") {|f| f.write("qwe"*3) }
    File.open("#{@src}/q/w/e/qwe4", "w") {|f| f.write("qwe"*4) }

    File.open("#{@src}/asd1", "w") {|f| f.write("asd") }
    File.open("#{@src}/a/asd2", "w") {|f| f.write("asd" * 2) }
    File.open("#{@src}/a/s/asd3", "w") {|f| f.write("asd" * 3) }

    @dst = dst = "#{@root}/backup"
    mkdir_p @dst

    @now = Time.now
    @timestamp = @now.strftime("%y%m%d-%H%M")

    stub(Time).now {@now} # Freeze

    Astrails::Safe.safe do
      local :path => "#{dst}/:kind"
      tar do
        archive :test1 do
          files src
          exclude "#{src}/q/w"
          exclude "#{src}/q/w/e"
        end
      end
    end

    @backup = "#{dst}/archive/archive-test1.#{@timestamp}.tar.gz"
  end

  it "should create backup file" do
    File.exists?(@backup).should be_true
  end

  describe "after extracting" do
    before(:all) do
      # prepare target dir
      @target = "#{@root}/test"
      mkdir_p @target
      system "tar -zxvf #{@backup} -C #{@target}"

      @test = "#{@target}/#{@root}/src"
      puts @test
    end

    it "should include asd1/2/3" do
      File.exists?("#{@test}/asd1").should be_true
      File.exists?("#{@test}/a/asd2").should be_true
      File.exists?("#{@test}/a/s/asd3").should be_true
    end

    it "should only include qwe 1 and 2 (no 3)" do
      File.exists?("#{@test}/qwe1").should be_true
      File.exists?("#{@test}/q/qwe2").should be_true
      File.exists?("#{@test}/q/w/qwe3").should be_false
      File.exists?("#{@test}/q/w/e/qwe4").should be_false
    end

    it "should preserve file content" do
      File.read("#{@test}/qwe1").should == "qwe"
      File.read("#{@test}/q/qwe2").should == "qweqwe"
      File.read("#{@test}/a/s/asd3").should == "asdasdasd"
    end
  end

end