Exec resource with environment

gistfile1.txt

[root@puppet ~]# cd /tmp/puppet/test6

[root@puppet test6]# puppet apply test.pp
notice: /Stage[main]//Exec[test2]/returns: executed successfully
notice: Finished catalog run in 0.30 seconds

[root@puppet test6]# ls
output2  test.pp

[root@puppet test6]# cat test.pp 
exec { "test":
  environment => 'BATCH=myval',
  path => ['/bin', '/usr/bin'],
  cwd => '/tmp/puppet/test6',
  command => 'echo $BATCH > output',
  unless  => 'test "$BATCH" = "myval"'
}

exec { "test2":
  environment => 'BATCH=myval2',
  path => ['/bin', '/usr/bin'],
  cwd => '/tmp/puppet/test6',
  command => 'echo $BATCH > output2',
  unless  => 'test "$BATCH" = "thisisnotmyval2"'
}

[root@puppet test6]# cat output2 
myval2

###
### Notice, Exec['test'] didn't run because the 'unless' parameter (which compared the env var to the
###  string I was expecting it to be) prevented it, proving the 'environment' param works with 'unless'
###
### Also notice, Exec['test2'] did run, re-proving the previous statement, but it also echo'd the env var
###  correctly into the output2 file, showing that the env var was picked up correctly by the executed command
###