func (s *ProxyUpdaterSuite) TestNilTagFails(c *gc.C) {
var args []apitesting.CheckArgs
var calls int
apiCaller := apitesting.CheckingAPICallerMultiArgs(c, args, &calls, nil)
api, err := proxyupdater.NewAPI(apiCaller, nil)
c.Check(api, gc.IsNil)
c.Check(err, gc.ErrorMatches, "tag is nil")
}
func newAPI(c *gc.C, args []apitesting.CheckArgs) (*int, *proxyupdater.API) {
var called int
apiCaller := apitesting.CheckingAPICallerMultiArgs(c, args, &called, nil)
api, err := proxyupdater.NewAPI(apiCaller, names.NewUnitTag("u/0"))
c.Assert(err, gc.IsNil)
c.Assert(api, gc.NotNil)
c.Assert(called, gc.Equals, 0)
return &called, api
}