github.com/jdgcs/sqlite3@v1.12.1-0.20210908114423-bc5f96e4dd51/testdata/tcl/sharedB.test (about)

     1  # 2014-12-05
     2  #
     3  # The author disclaims copyright to this source code.  In place of
     4  # a legal notice, here is a blessing:
     5  #
     6  #    May you do good and not evil.
     7  #    May you find forgiveness for yourself and forgive others.
     8  #    May you share freely, never taking more than you give.
     9  #
    10  #***********************************************************************
    11  #
    12  # Open two database connections on the same database in shared cache
    13  # mode.  Hold one open while repeatedly closing, reopening, and using
    14  # the second.
    15  #
    16  # This test is designed to demostrate that the fix for ticket
    17  # [e4a18565a36884b00edf66541f38c693827968ab] works.  
    18  #
    19  
    20  
    21  set testdir [file dirname $argv0]
    22  source $testdir/tester.tcl
    23  if {[run_thread_tests]==0} { finish_test ; return }
    24  db close
    25  set ::testprefix sharedB
    26  
    27  set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
    28  
    29  #-------------------------------------------------------------------------
    30  #
    31  do_test 1.1 {
    32    sqlite3 db1 test.db
    33    sqlite3 db2 test.db
    34  
    35    db1 eval {
    36      CREATE TABLE t1(x,y TEXT COLLATE nocase);
    37      WITH RECURSIVE
    38        c(i) AS (VALUES(1) UNION ALL SELECT i+1 FROM c WHERE i<100)
    39      INSERT INTO t1(x,y) SELECT i, printf('x%03dy',i) FROM c;
    40      CREATE INDEX t1yx ON t1(y,x);
    41    }
    42    db2 eval {
    43      SELECT x FROM t1 WHERE y='X014Y';
    44    }
    45  } {14}
    46  
    47  for {set j 1} {$j<=100} {incr j} {
    48    do_test 1.2.$j {
    49      db2 close
    50      sqlite3 db2 test.db
    51      db2 eval {
    52        SELECT x FROM t1 WHERE y='X014Y';
    53      }
    54    } {14}
    55  }
    56  
    57  db1 close
    58  db2 close
    59  sqlite3_enable_shared_cache $::enable_shared_cache
    60  finish_test