impl/memory: Fix time serialization encoding.

service/datastore/serialize/serialize_test.go

Index: service/datastore/serialize/serialize_test.go
diff --git a/service/datastore/serialize/serialize_test.go b/service/datastore/serialize/serialize_test.go
index 3dd7127c1c039f2853f434ac9309543fbb1fe42a..3f51690df85a2e6e598ab80161d00027bde633db 100644
--- a/service/datastore/serialize/serialize_test.go
+++ b/service/datastore/serialize/serialize_test.go
@@ -30,6 +30,7 @@ var (
 type dspmapTC struct {
 	name  string
 	props ds.PropertyMap
+	exp   ds.PropertyMap
 }
 
 var mkKey = ds.MakeKey
@@ -52,45 +53,53 @@ func ShouldEqualKey(actual interface{}, expected ...interface{}) string {
 func TestPropertyMapSerialization(t *testing.T) {
 	t.Parallel()
 
+	now := time.Now().UTC()
 	tests := []dspmapTC{
 		{
-			"basic",
-			ds.PropertyMap{
+			name: "basic",
+			props: ds.PropertyMap{
 				"R": {mp(false), mp(2.1), mpNI(3)},
 				"S": {mp("hello"), mp("world")},
 			},
 		},
 		{
-			"keys",
-			ds.PropertyMap{
+			name: "keys",
+			props: ds.PropertyMap{
 				"DS":        {mp(mkKey("appy", "ns", "Foo", 7)), mp(mkKey("other", "", "Yot", "wheeep"))},
 				"blobstore": {mp(blobstore.Key("sup")), mp(blobstore.Key("nerds"))},
 			},
 		},
 		{
-			"geo",
-			ds.PropertyMap{
+			name: "geo",
+			props: ds.PropertyMap{
 				"G": {mp(ds.GeoPoint{Lat: 1, Lng: 2})},
 			},
 		},
 		{
-			"data",
-			ds.PropertyMap{
+			name: "data",
+			props: ds.PropertyMap{
 				"S":          {mp("sup"), mp("fool"), mp("nerd")},
 				"D.Foo.Nerd": {mp([]byte("sup")), mp([]byte("fool"))},
 			},
 		},
 		{
-			"time",
-			ds.PropertyMap{
+			name: "time",
+			props: ds.PropertyMap{
 				"T": {
-					mp(time.Now().UTC()),
-					mp(time.Now().Add(time.Second).UTC())},
+					mp(now),
+					mp(now),
+				},
+			},
+			exp: ds.PropertyMap{
+				"T": {
+					mp(timeToInt(now)),
+					mp(timeToInt(now)),
+				},
 			},
 		},
 		{
-			"empty vals",
-			ds.PropertyMap{
+			name: "empty vals",
+			props: ds.PropertyMap{
 				"T": {mp(true), mp(true)},
 				"F": {mp(false), mp(false)},
 				"N": {mp(nil), mp(nil)},
@@ -107,7 +116,12 @@ func TestPropertyMapSerialization(t *testing.T) {
 					data := ToBytesWithContext(tc.props)
 					dec, err := ReadPropertyMap(mkBuf(data), WithContext, "", "")
 					So(err, ShouldBeNil)
-					So(dec, ShouldResemble, tc.props)
+
+					exp := tc.exp
+					if exp == nil {
+						exp = tc.props
+					}
+					So(dec, ShouldResemble, exp)
 				})
 			}
 		})