gitlab.com/CoiaPrant/sqlite3@v1.19.1/testdata/tcl/tkt-313723c356.test (about)

     1  # 2010 September 20
     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  # This file implements regression tests for SQLite library.
    12  #
    13  # This file implements tests to verify that ticket [313723c356] has been
    14  # fixed.  
    15  #
    16  
    17  set testdir [file dirname $argv0]
    18  source $testdir/tester.tcl
    19  source $testdir/malloc_common.tcl
    20  
    21  if {![wal_is_capable]} { finish_test ; return }
    22  
    23  do_execsql_test tkt-313723c356.1 {
    24    PRAGMA page_size = 1024;
    25    PRAGMA journal_mode = WAL;
    26    CREATE TABLE t1(a, b);
    27    CREATE INDEX i1 ON t1(a, b);
    28    INSERT INTO t1 VALUES(randomblob(400), randomblob(400));
    29    INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
    30    INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
    31    INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
    32    INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
    33  } {wal}
    34  faultsim_save_and_close
    35  
    36  do_faultsim_test tkt-313723c356.2 -faults shmerr* -prep {
    37    faultsim_restore_and_reopen
    38    sqlite3 db2 test.db
    39    db eval  { SELECT * FROM t1 }
    40    db2 eval { UPDATE t1 SET a = randomblob(399) }
    41    db2 close
    42  } -body {
    43    # At this point, the cache contains all of table t1 and none of index i1. The
    44    # cache is out of date. When the bug existed and the right xShmLock() fails
    45    # in the following statement, the internal cache of the WAL header was
    46    # being updated, but the contents of the page-cache not flushed. This causes
    47    # the integrity-check in the "-test" code to fail, as it is comparing the
    48    # cached (out-of-date) version of table t1 with the on disk (up-to-date)
    49    # version of index i1.
    50    #
    51    execsql { SELECT min(rowid) FROM t1 }
    52  } -test {
    53    faultsim_test_result {0 1}
    54    faultsim_integrity_check
    55  }
    56  
    57  finish_test