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

# encoding: binary
require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
PhusionPassenger.require_passenger_lib 'utils/tee_input'
require 'stringio'

module PhusionPassenger

shared_examples "TeeInput#gets" do
  context "if Content-Length is given" do
    before :each do
      init_input("hello\nworld\nlast line!", "CONTENT_LENGTH" => 21)
    end

    it "reads a line, including newline character" do
      @input.gets.should == "hello\n"
      @input.gets.should == "world\n"
    end

    it "reads until EOF if no newline is encountered before EOF" do
      @input.gets
      @input.gets
      @input.gets.should == "last line"
    end

    it "returns nil if EOF is reached" do
      @input.gets
      @input.gets
      @input.gets
      @input.gets.should be_nil
    end
  end

  context "if Transfer-Encoding is chunked" do
    before :each do
      init_input("hello\nworld\nlast line", "HTTP_TRANSFER_ENCODING" => "chunked")
    end

    it "reads a line, including newline character" do
      @input.gets.should == "hello\n"
      @input.gets.should == "world\n"
    end

    it "reads until EOF if no newline is encountered before EOF" do
      @input.gets
      @input.gets
      @input.gets.should == "last line"
    end

    it "returns nil if EOF is reached" do
      @input.gets
      @input.gets
      @input.gets
      @input.gets.should be_nil
    end
  end

  context "if neither Content-Length nor Transfer-Encoding chunked are given" do
    before :each do
      init_input("hello\nworld\nlast line")
    end

    it "returns nil" do
      @input.gets.should be_nil
    end
  end
end

shared_examples "TeeInput#read" do
  describe "with no arguments" do
    context "if Content-Length is given" do
      before :each do
        init_input("hello!", "CONTENT_LENGTH" => 5)
      end

      it "slurps up to Content-Length bytes from the socket" do
        @input.read.should == "hello"
      end

      it "returns the empty string if EOF is reached" do
        @input.read
        @input.read.should == ""
      end
    end

    context "if Transfer-Encoding is chunked" do
      before :each do
        init_input("hello!", "HTTP_TRANSFER_ENCODING" => "chunked")
      end

      it "slurps the entire socket" do
        @input.read.should == "hello!"
      end

      it "returns the empty string if EOF is reached" do
        @input.read
        @input.read.should == ""
      end
    end

    context "if neither Content-Length nor Transfer-Encoding chunked are given" do
      before :each do
        init_input("hello!")
      end

      it "returns the empty string" do
        @input.read.should == ""
      end
    end
  end

  describe "with a length argument" do
    it "raises ArgumentError if len < 0" do
      init_input("")
      lambda { @input.read(-1) }.should raise_error(ArgumentError)
    end

    it "returns the empty string if len == 0" do
      init_input("hello", "HTTP_TRANSFER_ENCODING" => "chunked")
      @input.read(0).should == ""
    end

    context "if Content-Length is given" do
      before :each do
        init_input("hello!", "CONTENT_LENGTH" => 5)
      end

      it "reads exactly len bytes if available" do
        @input.read(2).should == "he"
        @input.read(2).should == "ll"
      end

      it "reads at most Content-Length bytes if Content-Length < len are available" do
        @input.read(2).should == "he"
        @input.read(4).should == "llo"
      end

      it "returns nil if Content-Length is reached" do
        @input.read(5).should == "hello"
        @input.read(1).should be_nil
      end
    end

    context "if Transfer-Encoding is chunked" do
      before :each do
        init_input("hello", "HTTP_TRANSFER_ENCODING" => "chunked")
      end

      it "reads exactly len bytes if available" do
        @input.read(2).should == "he"
        @input.read(2).should == "ll"
      end

      it "reads until EOF if less than len bytes are available" do
        @input.read(2).should == "he"
        @input.read(4).should == "llo"
      end

      it "returns nil if EOF is reached" do
        @input.read(5).should == "hello"
        @input.read(1).should be_nil
      end
    end

    context "if neither Content-Length nor Transfer-Encoding chunked are given" do
      it "returns nil" do
        init_input("hello")
        @input.read(2).should be_nil
      end
    end
  end
end

shared_examples "TeeInput#size" do
  context "if Content-Length is given" do
    it "returns the value in Content-Length" do
      init_input("hello world", "CONTENT_LENGTH" => 10)
      @input.size.should == 10
    end
  end

  context "if Transfer-Encoding is chunked" do
    it "returns the number of bytes that can be read from the socket until EOF" do
      init_input("hello world", "HTTP_TRANSFER_ENCODING" => "chunked")
      @input.size.should == 11
    end
  end

  context "if neither Content-Length nor Transfer-Encoding chunked are given" do
    it "returns 0" do
      init_input("hello world")
      @input.size.should == 0
    end
  end
end

describe Utils::TeeInput do
  before :each do
    @sock, @sock2 = UNIXSocket.pair
  end

  after :each do
    [@sock, @sock2].each do |sock|
      sock.close if sock && !sock.closed?
    end
    @input.close if @input
  end

  context "when unbuffered" do
    def init_input(data, env = {})
      @input = Utils::TeeInput.new(@sock2, env)
      @sock.write(data)
      @sock.close
    end

    describe("#gets") { include_examples "TeeInput#gets" }
    describe("#read") { include_examples "TeeInput#read" }
    describe("#size") { include_examples "TeeInput#size" }
  end

  context "when buffered" do
    def init_input(data, env = {})
      @input = Utils::TeeInput.new(@sock2, env)
      @sock.write(data)
      @sock.close
      @input.read
      @input.rewind
    end

    describe("#gets") { include_examples "TeeInput#gets" }
    describe("#read") { include_examples "TeeInput#read" }
    describe("#size") { include_examples "TeeInput#size" }
  end
end

end # module PhusionPassenger