test storage object OCC write behavior with empty and non empty versions

server/core_storage_test.go

@@ -2082,6 +2082,77 @@ func TestStorageListNoRepeats(t *testing.T) {
  assert.Equal(t, "", values.Cursor, "cursor was not nil")
 }
 
+func TestStorageOverrwriteEmptyAndNonEmptyVersions(t *testing.T) {
+ db := NewDB(t)
+ defer db.Close()
+
+ uid := uuid.Must(uuid.NewV4())
+ InsertUser(t, db, uid)
+ collection := GenerateString()
+
+ ops := StorageOpWrites{
+ &StorageOpWrite{
+ OwnerID: uid.String(),
+ Object: &api.WriteStorageObject{
+ Collection: collection,
+ Key: "7",
+ Value: `{"testKey":"testValue1"}`,
+ PermissionRead: &wrapperspb.Int32Value{Value: 2},
+ PermissionWrite: &wrapperspb.Int32Value{Value: 1},
+ Version: "",
+ },
+ },
+ }
+
+ acks, code, err := StorageWriteObjects(context.Background(), logger, db, metrics, storageIdx, false, ops)
+
+ assert.Nil(t, err, "err was not nil")
+ assert.Equal(t, codes.OK, code, "code was not OK")
+ assert.NotNil(t, acks, "acks was nil")
+
+ ops = StorageOpWrites{
+ &StorageOpWrite{
+ OwnerID: uid.String(),
+ Object: &api.WriteStorageObject{
+ Collection: collection,
+ Key: "7",
+ Value: `{"testKey":"testValue2"}`,
+ PermissionRead: &wrapperspb.Int32Value{Value: 2},
+ PermissionWrite: &wrapperspb.Int32Value{Value: 1},
+ Version: "",
+ },
+ },
+ }
+
+ acks, code, err = StorageWriteObjects(context.Background(), logger, db, metrics, storageIdx, false, ops)
+
+ assert.Nil(t, err, "err was not nil")
+ assert.Equal(t, codes.OK, code, "code was not OK")
+ assert.NotNil(t, acks, "acks was nil")
+ assert.Len(t, acks.Acks, 1, "acks length was not 1")
+
+ ops = StorageOpWrites{
+ &StorageOpWrite{
+ OwnerID: uid.String(),
+ Object: &api.WriteStorageObject{
+ Collection: collection,
+ Key: "7",
+ Value: `{"testKey":"testValue3"}`,
+ PermissionRead: &wrapperspb.Int32Value{Value: 2},
+ PermissionWrite: &wrapperspb.Int32Value{Value: 1},
+ Version: acks.Acks[0].Version,
+ },
+ },
+ }
+
+ acks, code, err = StorageWriteObjects(context.Background(), logger, db, metrics, storageIdx, false, ops)
+
+ assert.Nil(t, err, "err was not nil")
+ assert.Equal(t, codes.OK, code, "code was not OK")
+ assert.NotNil(t, acks, "acks was nil")
+ assert.Len(t, acks.Acks, 1, "acks length was not 1")
+}
+
 // DB State and expected outcome when performing write op
 type writeTestDBState struct {
  write int