Some changes after review

server/uidassigner/main_test.go

 package main
 
 import (
-	"fmt"
 	"io/ioutil"
 	"math"
 	"os"
@@ -16,45 +15,42 @@ import (
 )
 
 func TestQuery(t *testing.T) {
-
 	var numInstances uint64 = 2
-
-	var mod uint64 = math.MaxUint64 / numInstances
-	var minIdx0 uint64 = 0 * mod
-	var minIdx1 uint64 = 1 * mod
+	mod := math.MaxUint64 / numInstances
+	minIdx0 := 0 * mod
+	minIdx1 := 1 * 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 == 0 {
 			uid, err := rdf.GetUid(str, 0, numInstances)
 			if uid < minIdx0 || uid > minIdx0+mod-1 {
 				t.Error("Not the correct UID", err)
 			}
-			fmt.Println("Instance-0", str, uid)
+			t.Logf("Instance-0", str, uid)
 			t.Logf("Correct UID")
+
 		} else {
 			uid, err := rdf.GetUid(str, 1, numInstances)
 			if uid < minIdx1 || uid > minIdx1+mod-1 {
 				t.Error("Not the correct UID", err)
 			}
-			fmt.Println("Instance-1", str, uid)
+			t.Logf("Instance-1", str, uid)
 			t.Logf("Correct UID")
 		}
 	}