refine tests

core/stores/cache/util_test.go

@@ -2,11 +2,8 @@ package cache
 
 import (
 	"testing"
-	"time"
 
-	"github.com/alicebob/miniredis"
 	"github.com/stretchr/testify/assert"
-	"github.com/tal-tech/go-zero/core/lang"
 )
 
 func TestFormatKeys(t *testing.T) {
@@ -27,22 +24,3 @@ func TestTotalWeights(t *testing.T) {
 	})
 	assert.Equal(t, 1, val)
 }
-
-func createMiniRedis() (r *miniredis.Miniredis, clean func(), err error) {
-	r, err = miniredis.Run()
-	if err != nil {
-		return nil, nil, err
-	}
-
-	return r, func() {
-		ch := make(chan lang.PlaceholderType)
-		go func() {
-			r.Close()
-			close(ch)
-		}()
-		select {
-		case <-ch:
-		case <-time.After(time.Second):
-		}
-	}, nil
-}