func assertCustomCharm(c *C, ch *state.Charm, series string, meta *charm.Meta, config *charm.Config, revision int) {
// Check Charm interface method results.
c.Assert(ch.Meta(), DeepEquals, meta)
c.Assert(ch.Config(), DeepEquals, config)
c.Assert(ch.Revision(), DeepEquals, revision)
// Test URL matches charm and expected series.
url := ch.URL()
c.Assert(url.Series, Equals, series)
c.Assert(url.Revision, Equals, ch.Revision())
// Ignore the BundleURL and BundleSHA256 methods, they're irrelevant.
}
func assertCharm(c *C, bun *corecharm.Bundle, sch *state.Charm) {
c.Assert(bun.Revision(), Equals, sch.Revision())
c.Assert(bun.Meta(), DeepEquals, sch.Meta())
c.Assert(bun.Config(), DeepEquals, sch.Config())
}