new_contents: import os
  from nose.tools import eq_
  import pyexcel.internal.garbagecollector as gc
  from pyexcel import iget_array
  
  
  def test_gc():
      gc.free_resource()
      data = iget_array(file_name=os.path.join("tests",
                                               "fixtures", "bug_01.csv"))
      data = list(data)
      eq_(len(gc.GARBAGE), 1)
      gc.free_resource()
      assert len(gc.GARBAGE) == 0
  
  
  def test_gc_custom():
      gc.free_resource()
      f = open(os.path.join("tests", "fixtures", "bug_01.csv"), 'r')
      gc.append(f)
      eq_(len(gc.GARBAGE), 1)
      gc.free_resource()
      assert len(gc.GARBAGE) == 0
  
subject: add missing file