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Dir : //opt/cpanel/ea-ruby27/src/passenger-release-6.0.23/test/ruby/utils/hosts_file_parser.rb

require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
PhusionPassenger.require_passenger_lib 'utils/hosts_file_parser'
require 'stringio'

module PhusionPassenger

describe Utils::HostsFileParser do
  before :each do
    @io = StringIO.new
  end

  def create
    @io.rewind
    @parser = Utils::HostsFileParser.new(@io)
  end

  describe "parsing" do
    it "ignores comments" do
      @io.puts("# 127.0.0.1 foo.com")
      create
      @parser.ip_count.should == 0
      @parser.host_count.should == 0
    end

    it "ignores comments that come after leading spaces" do
      @io.puts("   # 127.0.0.1 foo.com")
      create
      @parser.ip_count.should == 0
      @parser.host_count.should == 0
    end

    it "ignores comments that come after leading tabs" do
      @io.puts("\t# 127.0.0.1 foo.com")
      create
      @parser.ip_count.should == 0
      @parser.host_count.should == 0
    end

    it "ignores empty lines" do
      @io.puts("127.0.0.1 foo.com")
      @io.puts
      @io.puts("127.0.0.1 bar.com")
      @io.puts("127.0.0.2 baz.com")
      create
      @parser.ip_count.should == 2
      @parser.host_count.should == 3
    end

    it "ignores leading and trailing spaces" do
      @io.puts("  127.0.0.1 foo.com")
      @io.puts
      @io.puts("  127.0.0.1 bar.com  ")
      @io.puts("127.0.0.2 baz.com  ")
      create
      @parser.ip_count.should == 2
      @parser.host_count.should == 3
      @parser.resolve("foo.com").should == "127.0.0.1"
      @parser.resolve("bar.com").should == "127.0.0.1"
      @parser.resolve("baz.com").should == "127.0.0.2"
    end

    it "ignores leading and trailing tabs" do
      @io.puts("\t\t127.0.0.1 foo.com")
      @io.puts
      @io.puts("\t127.0.0.1 bar.com\t")
      @io.puts("127.0.0.2 baz.com\t\t")
      create
      @parser.ip_count.should == 2
      @parser.host_count.should == 3
      @parser.resolve("foo.com").should == "127.0.0.1"
      @parser.resolve("bar.com").should == "127.0.0.1"
      @parser.resolve("baz.com").should == "127.0.0.2"
    end

    it "correctly handles spaces as seperators" do
      @io.puts("127.0.0.1 foo.com bar.com  baz.com")
      create
      @parser.ip_count.should == 1
      @parser.host_count.should == 3
      @parser.resolve("foo.com").should == "127.0.0.1"
      @parser.resolve("bar.com").should == "127.0.0.1"
      @parser.resolve("baz.com").should == "127.0.0.1"
    end

    it "correctly handles tabs as seperators" do
      @io.puts("127.0.0.1\tfoo.com\t\tbar.com baz.com")
      create
      @parser.ip_count.should == 1
      @parser.host_count.should == 3
      @parser.resolve("foo.com").should == "127.0.0.1"
      @parser.resolve("bar.com").should == "127.0.0.1"
      @parser.resolve("baz.com").should == "127.0.0.1"
    end
  end

  describe "#resolve" do
    it "returns nil if the host name is not in the file" do
      @io.puts("127.0.0.1 foo.com")
      create
      @parser.resolve("bar.com").should be_nil
    end

    it "returns the IP address associated with the host name if it exists" do
      @io.puts("255.255.255.255 foo.com")
      create
      @parser.resolve("foo.com").should == "255.255.255.255"
    end

    it "is case-insensitive" do
      @io.puts("255.255.255.255 fOO.com")
      create
      @parser.resolve("foo.COM").should == "255.255.255.255"
    end

    it "correctly handles lines that contain multiple host names" do
      @io.puts("255.255.255.255 foo.com bar.com")
      create
      @parser.resolve("foo.com").should == "255.255.255.255"
      @parser.resolve("bar.com").should == "255.255.255.255"
      @parser.resolve("baz.com").should be_nil
    end

    it "always returns 127.0.0.1 for localhost" do
      create
      @parser.resolve("localhost").should == "127.0.0.1"
      @parser.resolve("localHOST").should == "127.0.0.1"
    end
  end

  describe "#resolves_to_localhost?" do
    before :each do
      @io.puts "127.0.0.1 kotori"
      @io.puts "192.168.0.1 kanako"
      @io.puts "::1 ageha"
      @io.puts "::2 sawako"
      @io.puts "0.0.0.0 mizusawa"
      create
    end

    it "returns true if the host name resolves to 127.0.0.1" do
      @parser.resolves_to_localhost?("kotori").should be_truthy
    end

    it "returns true if the host name resolves to ::1" do
      @parser.resolves_to_localhost?("ageha").should be_truthy
    end

    it "returns true if the host name resolves to 0.0.0.0" do
      @parser.resolves_to_localhost?("mizusawa").should be_truthy
    end

    it "returns false if the host name resolves to something else" do
      @parser.resolves_to_localhost?("sawako").should be_falsey
      @parser.resolves_to_localhost?("kanako").should be_falsey
    end

    it "returns false if the host name does not resolve" do
      @parser.resolves_to_localhost?("foo.com").should be_falsey
    end
  end

  describe "#add_group_data" do
    before :each do
      @standard_entries =
        "127.0.0.1 kotori hazuki\n" +
        "  192.168.0.1 kanako\n\n" +
        "\t::1 ageha sawako\n" +
        "0.0.0.0 mizusawa naru\n"
      @target = StringIO.new
    end

    it "adds the group data if it doesn't exist" do
      @io.puts @standard_entries
      create

      @parser.add_group_data("some marker",
        "# a comment\n" +
        "127.0.0.1 foo\n")
      @parser.write(@target)
      @target.string.should ==
        @standard_entries +
        "###### BEGIN some marker ######\n" +
        "# a comment\n" +
        "127.0.0.1 foo\n" +
        "###### END some marker ######\n"
    end

    it "replaces the existing group data if it does exist" do
      @io.puts "###### BEGIN some marker ######\n" +
        "# another comment\n" +
        "127.0.0.1 bar\n" +
        "###### END some marker ######\n" +
        "\n" +
        @standard_entries +
        "###### BEGIN some other marker ######\n" +
        "# another comment\n" +
        "127.0.0.1 bar\n" +
        "###### END some other marker ######\n"
      create

      @parser.add_group_data("some marker", "127.0.0.1 foo\n")
      @parser.write(@target)
      @target.string.should ==
        "###### BEGIN some marker ######\n" +
        "127.0.0.1 foo\n" +
        "###### END some marker ######\n" +
        "\n" +
        @standard_entries +
        "###### BEGIN some other marker ######\n" +
        "# another comment\n" +
        "127.0.0.1 bar\n" +
        "###### END some other marker ######\n"
    end

    it "correctly handles the lack of a terminating newline in the group data" do
      @io.puts @standard_entries
      create

      @parser.add_group_data("some marker",
        "# a comment\n" +
        "127.0.0.1 foo")
      @parser.write(@target)
      @target.string.should ==
        @standard_entries +
        "###### BEGIN some marker ######\n" +
        "# a comment\n" +
        "127.0.0.1 foo\n" +
        "###### END some marker ######\n"
    end

    it "ensures that the group data starts at a new line" do
      @io.write "127.0.0.1 foo.com"
      create
      @parser.add_group_data("some marker", "127.0.0.1 bar.com")
      @parser.write(@target)
      @target.string.should ==
        "127.0.0.1 foo.com\n" +
        "###### BEGIN some marker ######\n" +
        "127.0.0.1 bar.com\n" +
        "###### END some marker ######\n"
    end
  end

  describe "#write" do
    it "preserves all comments and leading and trailing whitespaces" do
      @io.puts "127.0.0.1 foo.com  "
      @io.puts "# a comment"
      @io.puts "\t127.0.0.1  bar.com\t"
      create
      original_data = @io.string
      target = StringIO.new
      @parser.write(target)
      target.string.should == original_data
    end
  end
end

end # module PhusionPassenger