Import SQLite 3.10.2.

third_party/sqlite/src/test/incrvacuum2.test

 # 2007 May 04
 #
 # The author disclaims copyright to this source code.  In place of
 # a legal notice, here is a blessing:
 #
 #    May you do good and not evil.
 #    May you find forgiveness for yourself and forgive others.
 #    May you share freely, never taking more than you give.
 #
 #***********************************************************************
@@ skipping 170 matching lines @@
     INSERT INTO t1 SELECT * FROM t1;            -- 4096
     INSERT INTO t1 SELECT * FROM t1;            -- 8192
     DELETE FROM t1 WHERE oid>512;
     DELETE FROM t1;
   }
 
   do_test 4.2 {
     execsql { 
       PRAGMA journal_mode = WAL;
       PRAGMA incremental_vacuum(1);
-      PRAGMA wal_checkpoint;
     }
+  } {wal}
+  do_test 4.2.1 {
+    execsql { PRAGMA wal_checkpoint }
     file size test.db-wal
   } [expr {32+2*(512+24)}]
 
   do_test 4.3 {
     db close
     sqlite3 db test.db
     set maxsz 0
     while {[file size test.db] > [expr 512*3]} {
       execsql { PRAGMA journal_mode = WAL }
       execsql { PRAGMA wal_checkpoint }
       execsql { PRAGMA incremental_vacuum(1) }
       set newsz [file size test.db-wal]
       if {$newsz>$maxsz} {set maxsz $newsz}
     }
     set maxsz 
   } [expr {32+3*(512+24)}]
 }
 
 finish_test