getbinaryfile.rb

describe :net_ftp_getbinaryfile, shared: true do
  before :each do
    @fixture_file = __dir__ + "/../fixtures/getbinaryfile"
    @tmp_file = tmp("getbinaryfile")

    @server = NetFTPSpecs::DummyFTP.new
    @server.serve_once

    @ftp = Net::FTP.new
    @ftp.connect(@server.hostname, @server.server_port)
    @ftp.binary = @binary_mode
  end

  after :each do
    @ftp.quit rescue nil
    @ftp.close
    @server.stop

    rm_r @tmp_file
  end

  it "sends the RETR command to the server" do
    @ftp.send(@method, "test", @tmp_file)
    @ftp.last_response.should == "226 Closing data connection. (RETR test)\n"
  end

  it "returns nil" do
    @ftp.send(@method, "test", @tmp_file).should be_nil
  end

  it "saves the contents of the passed remote file to the passed local file" do
    @ftp.send(@method, "test", @tmp_file)
    File.read(@tmp_file).should == "This is the content\nof the file named 'test'.\n"
  end

  describe "when passed a block" do
    it "yields the received content as binary blocks of the passed size" do
      res = []
      @ftp.send(@method, "test", @tmp_file, 10) { |bin| res << bin }
      res.should == [ "This is th", "e content\n", "of the fil", "e named 't", "est'.\n" ]
    end
  end

  describe "when resuming an existing file" do
    before :each do
      @tmp_file = tmp("getbinaryfile_resume")

      File.open(@tmp_file, "wb") do |f|
        f << "This is the content\n"
      end

      @ftp.resume = true
    end

    it "saves the remaining content of the passed remote file to the passed local file" do
      @ftp.send(@method, "test", @tmp_file)
      File.read(@tmp_file).should == "This is the content\nof the file named 'test'.\n"
    end

    describe "and the REST command fails" do
      it "raises a Net::FTPProtoError when the response code is 550" do
        @server.should_receive(:rest).and_respond("Requested action not taken.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPProtoError)
      end

      it "raises a Net::FTPPermError when the response code is 500" do
        @server.should_receive(:rest).and_respond("500 Syntax error, command unrecognized.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
      end

      it "raises a Net::FTPPermError when the response code is 501" do
        @server.should_receive(:rest).and_respond("501 Syntax error, command unrecognized.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
      end

      it "raises a Net::FTPPermError when the response code is 502" do
        @server.should_receive(:rest).and_respond("502 Command not implemented.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
      end

      it "raises a Net::FTPTempError when the response code is 421" do
        @server.should_receive(:rest).and_respond("421 Service not available, closing control connection.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPTempError)
      end

      it "raises a Net::FTPPermError when the response code is 530" do
        @server.should_receive(:rest).and_respond("530 Not logged in.")
        -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
      end
    end
  end

  describe "when the RETR command fails" do
    it "raises a Net::FTPTempError when the response code is 450" do
      @server.should_receive(:retr).and_respond("450 Requested file action not taken.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPTempError)
    end

    it "raises a Net::FTPProtoError when the response code is 550" do
      @server.should_receive(:retr).and_respond("Requested action not taken.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPProtoError)
    end

    it "raises a Net::FTPPermError when the response code is 500" do
      @server.should_receive(:retr).and_respond("500 Syntax error, command unrecognized.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end

    it "raises a Net::FTPPermError when the response code is 501" do
      @server.should_receive(:retr).and_respond("501 Syntax error, command unrecognized.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end

    it "raises a Net::FTPTempError when the response code is 421" do
      @server.should_receive(:retr).and_respond("421 Service not available, closing control connection.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPTempError)
    end

    it "raises a Net::FTPPermError when the response code is 530" do
      @server.should_receive(:retr).and_respond("530 Not logged in.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end
  end

  describe "when opening the data port fails" do
    it "raises a Net::FTPPermError when the response code is 500" do
      @server.should_receive(:eprt).and_respond("500 Syntax error, command unrecognized.")
      @server.should_receive(:port).and_respond("500 Syntax error, command unrecognized.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end

    it "raises a Net::FTPPermError when the response code is 501" do
      @server.should_receive(:eprt).and_respond("501 Syntax error in parameters or arguments.")
      @server.should_receive(:port).and_respond("501 Syntax error in parameters or arguments.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end

    it "raises a Net::FTPTempError when the response code is 421" do
      @server.should_receive(:eprt).and_respond("421 Service not available, closing control connection.")
      @server.should_receive(:port).and_respond("421 Service not available, closing control connection.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPTempError)
    end

    it "raises a Net::FTPPermError when the response code is 530" do
      @server.should_receive(:eprt).and_respond("530 Not logged in.")
      @server.should_receive(:port).and_respond("530 Not logged in.")
      -> { @ftp.send(@method, "test", @tmp_file) }.should raise_error(Net::FTPPermError)
    end
  end
end