require File.dirname(__FILE__) + "/../spec_helper"
require 'tempfile'
require 'stringio'

describe "Ruby StringIO" do
  it "should be coercible to java.io.InputStream with StringIO#to_inputstream" do
    file = StringIO.new('abcdefghij')
    stream = file.to_inputstream
    java.io.InputStream.should === stream
    
    bytes = "0000000000".to_java_bytes
    stream.read(bytes).should == 10
    String.from_java_bytes(bytes).should == 'abcdefghij'
  end

  it "should be coercible to java.io.OutputStream with StringIO#to_outputstream" do
    file = StringIO.new
    java.io.OutputStream.should === stream 
    
    bytes = "1234567890".to_java_bytes
    stream.write(bytes)
    stream.flush
    file.seek(0)
    str = file.read(10)
    str.should == String.from_java_bytes(bytes)
  end

  it "should be coercible to java.nio.channels.Channel with StringIO#to_channel" do
    file = StringIO.new
    channel = file.to_channel
    java.nio.channels.Channel.should === channel 
    
    bytes = java.nio.ByteBuffer.wrap("1234567890".to_java_bytes)
    channel.write(bytes)
    file.seek(0)
    str = file.read(10)
    str.should == String.from_java_bytes(bytes.array)
  end
end