require 'facets/file/create' require 'test/unit' #require 'tempfile' class Tets_File_Create < Test::Unit::TestCase class MockFile < ::File def self.open( fname, mode, &blk ) blk.call(self) end def self.read( fname=nil ) @mock_content.clone end def self.write( str ) @mock_content = str end def self.<<( str ) (@mock_content ||="") << str end end def test_create f = "not-a-real-file.txt" t = 'This is a test!' MockFile.create( f, t ) s = MockFile.read( f ) assert_equal( t, s ) end end