#4762 criteria for garbage collection changed, so the stat64 behaviour is...

#4762 criteria for garbage collection changed, so the stat64 behaviour is slightly different for the root node refs[t:4762]

git-svn-id: file:///svn/toku/tokudb@42385 c7de825b-a66e-492c-adef-691d508d4ae1

src/tests/stat64-root-changes.c

@@ -99,7 +99,7 @@ run_test (void) {
 
         DB_BTREE_STAT64 s;
         r = db->stat64(db, NULL, &s); CKERR(r);
-        assert(s.bt_nkeys == 0 && s.bt_dsize == 0);
+        assert(s.bt_nkeys <= 1 && s.bt_dsize == 0); // since garbage collection may not occur, the key count may not be updated
 
         r = db->close(db, 0);     CKERR(r);
 
@@ -109,7 +109,7 @@ run_test (void) {
         r = txn->commit(txn, 0);    CKERR(r);
 
         r = db->stat64(db, NULL, &s); CKERR(r);
-        assert(s.bt_nkeys == 0 && s.bt_dsize == 0);
+        assert(s.bt_nkeys <= 1 && s.bt_dsize == 0);
     }
 
     // verify update of non-existing key inserts a row
@@ -180,7 +180,7 @@ run_test (void) {
         r = txn->commit(txn, 0);    CKERR(r);
 
         r = db->stat64(db, NULL, &s); CKERR(r);
-        assert(s.bt_nkeys == 0 && s.bt_dsize == 0);
+        assert(s.bt_nkeys <= 1 && s.bt_dsize == 0); // since garbage collection may not occur, the key count may not be updated
 
         r = db->close(db, 0);     CKERR(r);
 
@@ -190,7 +190,7 @@ run_test (void) {
         r = txn->commit(txn, 0);    CKERR(r);
 
         r = db->stat64(db, NULL, &s); CKERR(r);
-        assert(s.bt_nkeys == 0 && s.bt_dsize == 0);
+        assert(s.bt_nkeys <= 1 && s.bt_dsize == 0);
     }
 
     r = db->close(db, 0);     CKERR(r);