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ring_test.go
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ring_test.go
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package dallimin_test
import (
"encoding/json"
"io/ioutil"
"strconv"
"strings"
"testing"
"github.com/bukalapak/dallimin"
"github.com/stretchr/testify/assert"
)
type Result struct {
Server string `json:"server"`
Key string `json:"key"`
Weight int `json:"weight"`
}
type Fixture struct {
Results []Result
Servers []string
Keys []string
}
func loadFixture(fname string) Fixture {
file, err := ioutil.ReadFile(fname)
panicErr(err)
var fixture Fixture
err = json.Unmarshal(file, &fixture)
panicErr(err)
return fixture
}
func panicErr(err error) {
if err != nil {
panic(err)
}
}
func TestServers(t *testing.T) {
f := loadFixture("fixtures/keys.json")
h, err := dallimin.New(f.Servers, dallimin.Option{})
assert.Nil(t, err)
assert.Len(t, h.Servers(), 3)
xs := []string{
"127.0.0.1:11210",
"127.0.0.1:11211",
"127.0.0.1:11212",
}
for _, addr := range h.Servers() {
assert.Contains(t, xs, addr.String())
}
}
func TestPickServer(t *testing.T) {
f := loadFixture("fixtures/keys.json")
h, _ := dallimin.New(f.Servers, dallimin.Option{})
for _, data := range f.Results {
addr, err := h.PickServer(data.Key)
server := strings.Split(data.Server, ":")
assert.Nil(t, err)
assert.Equal(t, "127.0.0.1:"+server[1], addr.String())
}
}
func TestPickServer_inlineWeights(t *testing.T) {
f := loadFixture("fixtures/keys-with-weights.json")
h, _ := dallimin.New(f.Servers, dallimin.Option{})
for _, data := range f.Results {
addr, err := h.PickServer(data.Key)
server := strings.Split(data.Server, ":")
assert.Nil(t, err)
assert.Equal(t, "127.0.0.1:"+server[1], addr.String())
}
}
func TestPickServer_withWeights(t *testing.T) {
f := loadFixture("fixtures/keys-with-weights.json")
s := map[string]int{}
for _, server := range f.Servers {
w := strings.Split(server, ":")[2]
v := strings.TrimSuffix(server, ":"+w)
n, _ := strconv.Atoi(w)
s[v] = n
}
h, _ := dallimin.NewWithWeights(s, dallimin.Option{})
for _, data := range f.Results {
addr, err := h.PickServer(data.Key)
server := strings.Split(data.Server, ":")
assert.Nil(t, err)
assert.Equal(t, "127.0.0.1:"+server[1], addr.String())
}
}
func TestPickServer_singleServer(t *testing.T) {
s := []string{"127.0.0.1:11211"}
h, _ := dallimin.New(s, dallimin.Option{})
addr, err := h.PickServer("api:foo")
assert.Nil(t, err)
assert.Equal(t, "127.0.0.1:11211", addr.String())
}
func TestPickServer_noServer(t *testing.T) {
s := []string{}
h, _ := dallimin.New(s, dallimin.Option{})
addr, err := h.PickServer("api:foo")
assert.Equal(t, err, dallimin.ErrNoServers)
assert.Nil(t, addr)
}
func TestPickServer_whenNoServerAlive(t *testing.T) {
s := []string{
"127.0.0.1:12345",
"127.0.0.1:12346",
}
h, _ := dallimin.New(s, dallimin.Option{CheckAlive: true})
addr, err := h.PickServer("api:foo")
assert.Equal(t, err, dallimin.ErrNoServers)
assert.Nil(t, addr)
}
func TestPickServer_whenAtLeastOneAlive(t *testing.T) {
s := []string{
"127.0.0.1:12345",
"127.0.0.1:11211",
}
h, _ := dallimin.New(s, dallimin.Option{CheckAlive: true})
addr, err := h.PickServer("api:foo")
assert.Nil(t, err)
assert.Equal(t, addr.String(), "127.0.0.1:11211")
}
func TestPickServer_checkAliveAndfailover(t *testing.T) {
s := []string{
"127.0.0.1:12346",
"127.0.0.1:11210",
}
h, _ := dallimin.New(s, dallimin.Option{CheckAlive: true, Failover: true})
addr, err := h.PickServer("api:foo")
assert.Nil(t, err)
assert.Equal(t, addr.String(), "127.0.0.1:11210")
}