move lib/go/gremlin to ent/dialect (#1192)

Summary:
Pull Request resolved: https://github.com/facebookexternal/fbc/pull/1192

Pull Request resolved: https://github.com/facebookincubator/ent/pull/11

Reviewed By: alexsn

Differential Revision: D16377224

fbshipit-source-id: 07ca7436eb9b64fbe2299568560b91466b2417ba

dialect/gremlin/encoding/graphson/lazy_test.go

@@ -0,0 +1,42 @@
+package graphson
+
+import (
+	"sync/atomic"
+	"testing"
+
+	"github.com/json-iterator/go"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+)
+
+func TestLazyEncode(t *testing.T) {
+	var m mocker
+	m.On("IsEmpty", mock.Anything).Return(false).Once()
+	m.On("Encode", mock.Anything, mock.Anything).Once()
+	defer m.AssertExpectations(t)
+
+	var cnt uint32
+	var enc jsoniter.ValEncoder = &lazyEncoder{resolve: func() jsoniter.ValEncoder {
+		assert.Equal(t, uint32(1), atomic.AddUint32(&cnt, 1))
+		return &m
+	}}
+
+	enc.IsEmpty(nil)
+	enc.Encode(nil, nil)
+}
+
+func TestLazyDecode(t *testing.T) {
+	var m mocker
+	m.On("Decode", mock.Anything, mock.Anything).Times(3)
+	defer m.AssertExpectations(t)
+
+	var cnt uint32
+	var dec jsoniter.ValDecoder = &lazyDecoder{resolve: func() jsoniter.ValDecoder {
+		assert.Equal(t, uint32(1), atomic.AddUint32(&cnt, 1))
+		return &m
+	}}
+
+	for i := 0; i < 3; i++ {
+		dec.Decode(nil, nil)
+	}
+}