func (s *steps124Suite) TestCopyFileNew(c *gc.C) {
src := c.MkDir()
dest := c.MkDir()
srcdata := []byte("new data!")
// test that a file in src dir and not in dest dir gets copied.
newSrc := filepath.Join(src, "new")
err := ioutil.WriteFile(newSrc, srcdata, 0644)
c.Assert(err, jc.ErrorIsNil)
newDest := filepath.Join(dest, "new")
err = upgrades.CopyFile(newDest, newSrc)
c.Assert(err, jc.ErrorIsNil)
srcb, err := ioutil.ReadFile(newSrc)
c.Assert(err, jc.ErrorIsNil)
destb, err := ioutil.ReadFile(newDest)
c.Assert(err, jc.ErrorIsNil)
// convert to string and use Equals because we'll get a better failure message
c.Assert(string(destb), gc.Equals, string(srcb))
}
func (s *steps124Suite) TestCopyFileExisting(c *gc.C) {
src := c.MkDir()
dest := c.MkDir()
srcdata := []byte("new data!")
destdata := []byte("old data!")
exSrc := filepath.Join(src, "existing")
exDest := filepath.Join(dest, "existing")
err := ioutil.WriteFile(exSrc, srcdata, 0644)
c.Assert(err, jc.ErrorIsNil)
err = ioutil.WriteFile(exDest, destdata, 0644)
c.Assert(err, jc.ErrorIsNil)
err = upgrades.CopyFile(exDest, exSrc)
c.Assert(err, jc.ErrorIsNil)
// assert we haven't changed the destination
b, err := ioutil.ReadFile(exDest)
c.Assert(err, jc.ErrorIsNil)
// convert to string because we'll get a better failure message
c.Assert(string(b), gc.Equals, string(destdata))
}
