// allCounters returns all jCounter documents; it's not usable in production,
// that's why defined only for tests.
func allCounters() ([]*models.Counter, error) {
var counters []*models.Counter
query := func(c *mgo.Collection) error {
return c.Find(nil).All(&counters)
}
if err := modelhelper.Mongo.Run(modelhelper.CountersColl, query); err != nil {
return nil, err
}
sort.Sort(models.Counters(counters))
return counters, nil
}
func CountersByNamespace(group string) ([]*models.Counter, error) {
var counters []*models.Counter
query := func(c *mgo.Collection) error {
return c.Find(bson.M{"namespace": group}).All(&counters)
}
if err := Mongo.Run(CountersColl, query); err != nil {
return nil, err
}
sort.Sort(models.Counters(counters))
return counters, nil
}
func TestCounter(t *testing.T) {
db := modeltesthelper.NewMongoDB(t)
defer db.Close()
if err := delCounters(); err != nil {
t.Fatalf("delCounters()=%s", err)
}
counters := []*models.Counter{{
ID: bson.NewObjectId(),
Namespace: "foo",
Type: "member_instaces",
Current: 10,
}, {
ID: bson.NewObjectId(),
Namespace: "foo",
Type: "member_stacks",
Current: 1,
}, {
ID: bson.NewObjectId(),
Namespace: "bar",
Type: "member_instances",
Current: 2,
}, {
ID: bson.NewObjectId(),
Namespace: "bar",
Type: "member_stacks",
Current: 5,
}}
sort.Sort(models.Counters(counters))
if err := modelhelper.CreateCounters(counters...); err != nil {
t.Fatalf("CreateCounters()=%s", err)
}
c, err := allCounters()
if err != nil {
t.Fatalf("counters()=%s", err)
}
if !reflect.DeepEqual(counters, c) {
t.Fatalf("got %+v, want %+v", c, counters)
}
decCases := []struct {
n int
want int
}{
{7, 3}, // i=0
{1, 0}, // i=1
{2, 0}, // i=2
{3, 2}, // i=3
}
for i, cas := range decCases {
c := counters[i]
err := modelhelper.DecrementOrCreateCounter(c.Namespace, c.Type, cas.n)
if err != nil {
t.Errorf("%d (%s): DecrementOrCreateCounter()=%s", i, c.ID.Hex(), err)
continue
}
got, err := modelhelper.CounterByID(c.ID)
if err != nil {
t.Errorf("%d (%s): CounterByID()=%d", i, c.ID.Hex(), err)
continue
}
if got.Current != cas.want {
t.Errorf("%d (%s): got %d, want %d", i, c.ID.Hex(), got.Current, cas.want)
}
}
newCases := []struct {
namespace string
typ string
n int
}{
{"qux", "member_stacks", 1}, // i=0
{"qux", "member_instances", 3}, // i=0
}
for i, cas := range newCases {
err := modelhelper.DecrementOrCreateCounter(cas.namespace, cas.typ, cas.n)
if err != nil {
t.Errorf("%d: DecrementOrCreateCounter()=%s", i, err)
}
}
c, err = modelhelper.CountersByNamespace("qux")
if err != nil {
t.Fatalf("CountersByNamespace()=%s", err)
}
if len(c) != 2 {
t.Fatalf("got len(c)=%d, want len(c)=2", len(c))
}
}