github.com/rogpeppe/juju@v0.0.0-20140613142852-6337964b789e/environs/testing/cloudinit.go (about)

     1  // Copyright 2013 Canonical Ltd.
     2  // Licensed under the AGPLv3, see LICENCE file for details.
     3  
     4  package testing
     5  
     6  import (
     7  	"github.com/juju/juju/environs"
     8  )
     9  
    10  // PatchDataDir temporarily overrides environs.DataDir for testing purposes.
    11  // It returns a cleanup function that you must call later to restore the
    12  // original value.
    13  func PatchDataDir(path string) func() {
    14  	originalDataDir := environs.DataDir
    15  	environs.DataDir = path
    16  	return func() { environs.DataDir = originalDataDir }
    17  }