.

wcfs/δbtail_test.go

@@ -208,6 +208,7 @@ func xverifyΔBTail(t *testing.T, db *zodb.DB, treeRoot zodb.Oid, at1, at2 zodb.
 	sort.Slice(keyv1, func(i, j int) bool {
 		return keyv1[i] < keyv1[j]
 	})
+	keyv1 = append(keyv1, 10000) // inf, simulating ZBigFile.Size() query
 	for kidx := range IntSets(len(keyv1)) {
 		keys := make([]Key, len(kidx))
 		for _, i := range kidx {
@@ -250,7 +251,7 @@ func xverifyΔBTail1(t *testing.T, db *zodb.DB, treeRoot zodb.Oid, at1,at2 zodb.
 
 	d12 := kvdiff(kv1, kv2)
 	fmt.Println("d12:", d12)
-	if len(d12) == 0 {
+	if len(d12) == 0 && len(initialTrackedKeys) == 0 {
 		assert.Equal(len(δB.ByRoot), 0)
 		return
 	}