func (bs *bootedSuite) TestNameAndRevnoFromSnapInvalidFormat(c *C) {
_, _, err := snapstate.NameAndRevnoFromSnap("invalid")
c.Assert(err, ErrorMatches, `input "invalid" has invalid format \(not enough '_'\)`)
}
func (bs *bootedSuite) TestNameAndRevnoFromSnapValid(c *C) {
name, revno, err := snapstate.NameAndRevnoFromSnap("foo_2.snap")
c.Assert(err, IsNil)
c.Assert(name, Equals, "foo")
c.Assert(revno, Equals, snap.R(2))
}