func (suite *StateSuite) TestCreateStateFileWritesEmptyStateFile(c *gc.C) {
stor := suite.newStorage(c)
url, err := common.CreateStateFile(stor)
c.Assert(err, jc.ErrorIsNil)
reader, err := storage.Get(stor, common.StateFile)
c.Assert(err, jc.ErrorIsNil)
data, err := ioutil.ReadAll(reader)
c.Assert(err, jc.ErrorIsNil)
c.Check(string(data), gc.Equals, "")
c.Assert(url, gc.NotNil)
expectedURL, err := stor.URL(common.StateFile)
c.Assert(err, jc.ErrorIsNil)
c.Check(url, gc.Equals, expectedURL)
}
func (suite *StateSuite) TestDeleteStateFile(c *gc.C) {
closer, stor, dataDir := envtesting.CreateLocalTestStorage(c)
defer closer.Close()
err := common.DeleteStateFile(stor)
c.Assert(err, jc.ErrorIsNil) // doesn't exist, juju don't care
_, err = common.CreateStateFile(stor)
c.Assert(err, jc.ErrorIsNil)
_, err = os.Stat(filepath.Join(dataDir, common.StateFile))
c.Assert(err, jc.ErrorIsNil)
err = common.DeleteStateFile(stor)
c.Assert(err, jc.ErrorIsNil)
_, err = os.Stat(filepath.Join(dataDir, common.StateFile))
c.Assert(err, jc.Satisfies, os.IsNotExist)
}