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

     1  # 2008 August 01
     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  # This test script checks malloc failures in various obscure operations.
    13  # 
    14  # $Id: mallocI.test,v 1.3 2009/08/10 04:26:39 danielk1977 Exp $
    15  
    16  set testdir [file dirname $argv0]
    17  source $testdir/tester.tcl
    18  source $testdir/malloc_common.tcl
    19  
    20  # Malloc failures in a view.
    21  #
    22  do_malloc_test mallocI-1 -sqlprep {
    23    CREATE TABLE t1(a,b,c,d);
    24    CREATE VIEW v1 AS SELECT a*b, c*d FROM t1 ORDER BY b-d;
    25  } -sqlbody {
    26    SELECT * FROM v1
    27  }
    28  
    29  # Malloc failure while trying to service a pragma on a TEMP database.
    30  #
    31  do_malloc_test mallocI-2 -sqlbody {
    32    PRAGMA temp.page_size
    33  }
    34  
    35  # Malloc failure while creating a table from a SELECT statement.
    36  #
    37  do_malloc_test mallocI-3 -sqlprep {
    38    CREATE TABLE t1(a,b,c);
    39  } -sqlbody {
    40    CREATE TABLE t2 AS SELECT b,c FROM t1;
    41  }
    42  
    43  # This tests that a malloc failure that occurs while passing the schema
    44  # does not result in a SHARED lock being left on the database file.
    45  #
    46  do_malloc_test mallocI-4 -tclprep {
    47    sqlite3 db2 test.db
    48    db2 eval {
    49      CREATE TABLE t1(a, b, c);
    50      CREATE TABLE t2(a, b, c);
    51    }
    52  } -sqlbody {
    53    SELECT * FROM t1
    54  } -cleanup {
    55    do_test mallocI-4.$::n.2 {
    56      # If this INSERT is possible then [db] does not hold a shared lock
    57      # on the database file.
    58      catchsql { INSERT INTO t1 VALUES(1, 2, 3) } db2
    59    } {0 {}}
    60    catch {db2 close}
    61  }
    62  catch { db2 close }
    63  
    64  do_faultsim_test mallocI-5 -faults oom* -prep {
    65    catch { db close }
    66    sqlite3 db test.db
    67    sqlite3_db_config_lookaside db 0 0 0
    68  } -body {
    69    db eval { Select CAST(1 AS blob) }
    70  } -test {
    71    faultsim_test_result {0 1}
    72  }
    73  
    74  
    75  finish_test