func (s *PhaseSuite) TestCanTransitionTo(c *gc.C) {
c.Check(migration.QUIESCE.CanTransitionTo(migration.SUCCESS), jc.IsFalse)
c.Check(migration.QUIESCE.CanTransitionTo(migration.ABORT), jc.IsTrue)
c.Check(migration.QUIESCE.CanTransitionTo(migration.READONLY), jc.IsTrue)
c.Check(migration.QUIESCE.CanTransitionTo(migration.Phase(-1)), jc.IsFalse)
c.Check(migration.ABORT.CanTransitionTo(migration.QUIESCE), jc.IsFalse)
}
func (s *PhaseSuite) TestInvalid(c *gc.C) {
c.Check(migration.Phase(-1).String(), gc.Equals, "UNKNOWN")
c.Check(migration.Phase(9999).String(), gc.Equals, "UNKNOWN")
}
func (s *PhaseSuite) TestUNKNOWN(c *gc.C) {
// 0 should be UNKNOWN to guard against uninitialised struct
// fields.
c.Check(migration.Phase(0), gc.Equals, migration.UNKNOWN)
}