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// Copyright 2014 Canonical Ltd.
// Licensed under the LGPLv3, see LICENCE file for details.
package registry_test
import (
"reflect"
"github.com/juju/errors"
"github.com/juju/testing"
jc "github.com/juju/testing/checkers"
gc "gopkg.in/check.v1"
"github.com/juju/utils/registry"
)
type registrySuite struct {
testing.IsolationSuite
}
var _ = gc.Suite(®istrySuite{})
type Factory func() (interface{}, error)
func nilFactory() (interface{}, error) {
return nil, nil
}
var factoryType = reflect.TypeOf((*Factory)(nil)).Elem()
type testFacade struct {
version string
called bool
}
type stringVal struct {
value string
}
func (t *testFacade) TestMethod() stringVal {
t.called = true
return stringVal{"called " + t.version}
}
func (s *registrySuite) TestDescriptionFromVersions(c *gc.C) {
versions := registry.Versions{0: nilFactory}
c.Check(registry.DescriptionFromVersions("name", versions),
gc.DeepEquals,
registry.Description{
Name: "name",
Versions: []int{0},
})
versions[2] = nilFactory
c.Check(registry.DescriptionFromVersions("name", versions),
gc.DeepEquals,
registry.Description{
Name: "name",
Versions: []int{0, 2},
})
}
func (s *registrySuite) TestDescriptionFromVersionsAreSorted(c *gc.C) {
versions := registry.Versions{
10: nilFactory,
5: nilFactory,
0: nilFactory,
18: nilFactory,
6: nilFactory,
4: nilFactory,
}
c.Check(registry.DescriptionFromVersions("name", versions),
gc.DeepEquals,
registry.Description{
Name: "name",
Versions: []int{0, 4, 5, 6, 10, 18},
})
}
func (s *registrySuite) TestRegisterAndList(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
c.Assert(r.Register("name", 0, nilFactory), gc.IsNil)
c.Check(r.List(), gc.DeepEquals, []registry.Description{
{Name: "name", Versions: []int{0}},
})
}
func (s *registrySuite) TestRegisterAndListMultiple(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
c.Assert(r.Register("other", 0, nilFactory), gc.IsNil)
c.Assert(r.Register("name", 0, nilFactory), gc.IsNil)
c.Assert(r.Register("third", 2, nilFactory), gc.IsNil)
c.Check(r.List(), gc.DeepEquals, []registry.Description{
{Name: "name", Versions: []int{0}},
{Name: "other", Versions: []int{0}},
{Name: "third", Versions: []int{2}},
})
}
func (s *registrySuite) TestRegisterWrongType(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
err := r.Register("other", 0, "notAFactory")
c.Check(err, gc.ErrorMatches, `object of type string cannot be converted to type .*registry_test.Factory`)
}
func (s *registrySuite) TestRegisterAlreadyPresent(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
err := r.Register("name", 0, func() (interface{}, error) {
return "orig", nil
})
c.Assert(err, gc.IsNil)
err = r.Register("name", 0, func() (interface{}, error) {
return "broken", nil
})
c.Check(err, gc.ErrorMatches, `object "name\(0\)" already registered`)
f, err := r.Get("name", 0)
c.Assert(err, gc.IsNil)
val, err := f.(Factory)()
c.Assert(err, gc.IsNil)
c.Check(val, gc.Equals, "orig")
}
func (s *registrySuite) TestGet(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
customFactory := func() (interface{}, error) {
return 10, nil
}
c.Assert(r.Register("name", 0, customFactory), gc.IsNil)
f, err := r.Get("name", 0)
c.Assert(err, gc.IsNil)
c.Assert(f, gc.NotNil)
res, err := f.(Factory)()
c.Assert(err, gc.IsNil)
c.Check(res, gc.Equals, 10)
}
func (s *registrySuite) TestGetUnknown(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
f, err := r.Get("name", 0)
c.Check(err, jc.Satisfies, errors.IsNotFound)
c.Check(err, gc.ErrorMatches, `name\(0\) not found`)
c.Check(f, gc.IsNil)
}
func (s *registrySuite) TestGetUnknownVersion(c *gc.C) {
r := registry.NewTypedNameVersion(factoryType)
c.Assert(r.Register("name", 0, nilFactory), gc.IsNil)
f, err := r.Get("name", 1)
c.Check(err, jc.Satisfies, errors.IsNotFound)
c.Check(err, gc.ErrorMatches, `name\(1\) not found`)
c.Check(f, gc.IsNil)
}
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