plugeth/metrics/registry_test.go

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package metrics
import (
"testing"
)
func BenchmarkRegistry(b *testing.B) {
r := NewRegistry()
r.Register("foo", NewCounter())
b.ResetTimer()
for i := 0; i < b.N; i++ {
r.Each(func(string, interface{}) {})
}
}
func TestRegistry(t *testing.T) {
r := NewRegistry()
r.Register("foo", NewCounter())
i := 0
r.Each(func(name string, iface interface{}) {
i++
if name != "foo" {
t.Fatal(name)
}
if _, ok := iface.(Counter); !ok {
t.Fatal(iface)
}
})
if i != 1 {
t.Fatal(i)
}
r.Unregister("foo")
i = 0
r.Each(func(string, interface{}) { i++ })
if i != 0 {
t.Fatal(i)
}
}
func TestRegistryDuplicate(t *testing.T) {
r := NewRegistry()
if err := r.Register("foo", NewCounter()); nil != err {
t.Fatal(err)
}
if err := r.Register("foo", NewGauge()); nil == err {
t.Fatal(err)
}
i := 0
r.Each(func(name string, iface interface{}) {
i++
if _, ok := iface.(Counter); !ok {
t.Fatal(iface)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestRegistryGet(t *testing.T) {
r := NewRegistry()
r.Register("foo", NewCounter())
if count := r.Get("foo").(Counter).Count(); count != 0 {
t.Fatal(count)
}
r.Get("foo").(Counter).Inc(1)
if count := r.Get("foo").(Counter).Count(); count != 1 {
t.Fatal(count)
}
}
func TestRegistryGetOrRegister(t *testing.T) {
r := NewRegistry()
// First metric wins with GetOrRegister
_ = r.GetOrRegister("foo", NewCounter())
m := r.GetOrRegister("foo", NewGauge())
if _, ok := m.(Counter); !ok {
t.Fatal(m)
}
i := 0
r.Each(func(name string, iface interface{}) {
i++
if name != "foo" {
t.Fatal(name)
}
if _, ok := iface.(Counter); !ok {
t.Fatal(iface)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestRegistryGetOrRegisterWithLazyInstantiation(t *testing.T) {
r := NewRegistry()
// First metric wins with GetOrRegister
_ = r.GetOrRegister("foo", NewCounter)
m := r.GetOrRegister("foo", NewGauge)
if _, ok := m.(Counter); !ok {
t.Fatal(m)
}
i := 0
r.Each(func(name string, iface interface{}) {
i++
if name != "foo" {
t.Fatal(name)
}
if _, ok := iface.(Counter); !ok {
t.Fatal(iface)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestRegistryUnregister(t *testing.T) {
l := len(arbiter.meters)
r := NewRegistry()
r.Register("foo", NewCounter())
r.Register("bar", NewMeter())
r.Register("baz", NewTimer())
if len(arbiter.meters) != l+2 {
t.Errorf("arbiter.meters: %d != %d\n", l+2, len(arbiter.meters))
}
r.Unregister("foo")
r.Unregister("bar")
r.Unregister("baz")
if len(arbiter.meters) != l {
t.Errorf("arbiter.meters: %d != %d\n", l+2, len(arbiter.meters))
}
}
func TestPrefixedChildRegistryGetOrRegister(t *testing.T) {
r := NewRegistry()
pr := NewPrefixedChildRegistry(r, "prefix.")
_ = pr.GetOrRegister("foo", NewCounter())
i := 0
r.Each(func(name string, m interface{}) {
i++
if name != "prefix.foo" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestPrefixedRegistryGetOrRegister(t *testing.T) {
r := NewPrefixedRegistry("prefix.")
_ = r.GetOrRegister("foo", NewCounter())
i := 0
r.Each(func(name string, m interface{}) {
i++
if name != "prefix.foo" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestPrefixedRegistryRegister(t *testing.T) {
r := NewPrefixedRegistry("prefix.")
err := r.Register("foo", NewCounter())
c := NewCounter()
Register("bar", c)
if err != nil {
t.Fatal(err.Error())
}
i := 0
r.Each(func(name string, m interface{}) {
i++
if name != "prefix.foo" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestPrefixedRegistryUnregister(t *testing.T) {
r := NewPrefixedRegistry("prefix.")
_ = r.Register("foo", NewCounter())
i := 0
r.Each(func(name string, m interface{}) {
i++
if name != "prefix.foo" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
r.Unregister("foo")
i = 0
r.Each(func(name string, m interface{}) {
i++
})
if i != 0 {
t.Fatal(i)
}
}
func TestPrefixedRegistryGet(t *testing.T) {
pr := NewPrefixedRegistry("prefix.")
name := "foo"
pr.Register(name, NewCounter())
fooCounter := pr.Get(name)
if fooCounter == nil {
t.Fatal(name)
}
}
func TestPrefixedChildRegistryGet(t *testing.T) {
r := NewRegistry()
pr := NewPrefixedChildRegistry(r, "prefix.")
name := "foo"
pr.Register(name, NewCounter())
fooCounter := pr.Get(name)
if fooCounter == nil {
t.Fatal(name)
}
}
func TestChildPrefixedRegistryRegister(t *testing.T) {
r := NewPrefixedChildRegistry(DefaultRegistry, "prefix.")
err := r.Register("foo", NewCounter())
c := NewCounter()
Register("bar", c)
if err != nil {
t.Fatal(err.Error())
}
i := 0
r.Each(func(name string, m interface{}) {
i++
if name != "prefix.foo" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestChildPrefixedRegistryOfChildRegister(t *testing.T) {
r := NewPrefixedChildRegistry(NewRegistry(), "prefix.")
r2 := NewPrefixedChildRegistry(r, "prefix2.")
err := r.Register("foo2", NewCounter())
if err != nil {
t.Fatal(err.Error())
}
err = r2.Register("baz", NewCounter())
if err != nil {
t.Fatal(err.Error())
}
c := NewCounter()
Register("bars", c)
i := 0
r2.Each(func(name string, m interface{}) {
i++
if name != "prefix.prefix2.baz" {
t.Fatal(name)
}
})
if i != 1 {
t.Fatal(i)
}
}
func TestWalkRegistries(t *testing.T) {
r := NewPrefixedChildRegistry(NewRegistry(), "prefix.")
r2 := NewPrefixedChildRegistry(r, "prefix2.")
err := r.Register("foo2", NewCounter())
if err != nil {
t.Fatal(err.Error())
}
err = r2.Register("baz", NewCounter())
if err != nil {
t.Fatal(err.Error())
}
c := NewCounter()
Register("bars", c)
_, prefix := findPrefix(r2, "")
if prefix != "prefix.prefix2." {
t.Fatal(prefix)
}
}