fix email regex rule,use gtest

server/utility/validate/validate_test.go

@@ -1,11 +1,11 @@
 package validate
 
 import (
-	"github.com/stretchr/testify/assert"
+	"github.com/gogf/gf/v2/test/gtest"
 	"testing"
 )
 
 func TestIsEmail(t *testing.T) {
 	b := IsEmail("QTT123456@163.com")
-	assert.True(t, b, "ok~")
+	gtest.Assert(true, b)
 }