update to latest micro

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

opentracing_test.go

@@ -1,50 +0,0 @@
-package opentracing
-
-import (
-	"context"
-	"sync"
-	"testing"
-
-	opentracing "github.com/opentracing/opentracing-go"
-	"go.unistack.org/micro/v4/metadata"
-)
-
-func TestStartSpanFromIncomingContext(t *testing.T) {
-	md := metadata.New(2)
-	md.Set("key", "val")
-
-	var g sync.WaitGroup
-
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-	ctx = metadata.NewIncomingContext(ctx, md)
-
-	tracer := opentracing.GlobalTracer()
-
-	g.Add(8000)
-	cherr := make(chan error)
-	for i := 0; i < 8000; i++ {
-		go func() {
-			defer g.Done()
-			_, sp, err := startSpanFromIncomingContext(ctx, tracer, "test")
-			if err != nil {
-				cherr <- err
-			}
-			sp.Finish()
-		}()
-	}
-
-	for {
-		select {
-		default:
-			g.Wait()
-			close(cherr)
-		case err, ok := <-cherr:
-			if err != nil {
-				t.Fatal(err)
-			} else if !ok {
-				return
-			}
-		}
-	}
-}