unit test for uidassigner

server/uidassigner/main_test.go

+package main
+
+import (
+	"io/ioutil"
+	"math"
+	"os"
+	"testing"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/dgraph-io/dgraph/commit"
+	"github.com/dgraph-io/dgraph/posting"
+	"github.com/dgraph-io/dgraph/rdf"
+	"github.com/dgraph-io/dgraph/store"
+	"github.com/dgryski/go-farm"
+)
+
+func TestQuery(t *testing.T) {
+	var instanceIdx uint64 = 0
+	var numInstances uint64 = 2
+
+	var mod uint64 = math.MaxUint64 / numInstances
+	var minIdx uint64 = instanceIdx * mod
+
+	logrus.SetLevel(logrus.DebugLevel)
+
+	dir, err := ioutil.TempDir("", "storetest_")
+	if err != nil {
+		t.Error(err)
+		return
+	}
+	defer os.RemoveAll(dir)
+	ps := new(store.Store)
+	ps.Init(dir)
+	clog := commit.NewLogger(dir, "mutations", 50<<20)
+	clog.Init()
+	defer clog.Close()
+
+	posting.Init(ps, clog)
+
+	list := []string{"alice", "bob", "mallory", "ash", "man", "dgraph"}
+
+	for _, str := range list {
+		if farm.Fingerprint64([]byte(str))%numInstances != instanceIdx {
+			continue
+		} else {
+			uid, err := rdf.GetUid(str, instanceIdx, numInstances)
+			if uid < minIdx || uid > minIdx+mod-1 {
+				t.Error("Not the correct UID", err)
+			}
+			t.Logf("Correct UID")
+		}
+	}
+}