require File.join(File.dirname(__FILE__), "..", "lib", "lockit.rb")
require 'tmpdir'
require 'rspec'

describe LockIt::Dir do
  
  describe "locking and unlocking" do
    
    it "is unlocked by default" do
      Dir.mktmpdir do |d|
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.locked?.should eql(false)
      end
    end

    it "can be locked and unlocked" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.lock
        lockit_dir.locked?.should eql(true)
        lockit_dir.unlock
        lockit_dir.locked?.should eql(false)
      end
    end
    
  end
  
  describe "#try_lock" do
        
    it "tries the lock & returns false if it is already locked" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.lock
        lockit_dir.try_lock.should eql(false)
      end
    end
    
    it "tries the lock & unlocks the dir if it isn't yet locked" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.try_lock
        lockit_dir.locked?.should eql(true)
      end
    end
    
  end
  
  describe "#lock_info" do
    
    it "knows the location of the lockfile" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.try_lock
        info = lockit_dir.lock_info
        info[:file].should eql("#{d}/#{LockIt::FILENAME}")
      end
    end
    
    it "knows when it was created" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.try_lock
        info = lockit_dir.lock_info
        obtained = DateTime.parse(info[:obtained])
        obtained.should be_instance_of(DateTime)
      end
    end
    
  end
  
  describe "#revise_lock" do
    
    it "returns false if called on an unlocked directory" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.locked?.should eql(false)
        release_time = Time.now + 60
        lockit_dir.revise_lock(:release => release_time).should eql(false)
      end
    end
    
    it "adds a release time to a locked directory" do
      Dir.mktmpdir do |d|      
        lockit_dir = LockIt::Dir.new(d)
        lockit_dir.lock
        lockit_dir.locked?.should eql(true)
        release_time = Time.now + 60
        lockit_dir.revise_lock(:release => release_time)
        @info = lockit_dir.lock_info
        DateTime.parse(@info[:release]).should be_instance_of(DateTime)
      end
    end
    
    it "reports its release time" do
      @pending
    end
    
    it "reports if no release time has been set" do
      @pending
    end
    
  end

end