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Overview
Comment:Add fault-injection and other tests (and fixes) to improve coverage of vdbesort.c.
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SHA1: 0e6defa6aa540b413ea3f4bb6dcd86364d547067
User & Date: dan 2011-08-08 16:44:25
Context
2011-08-08
19:26
Remove redundant parameter from vdbeSorterInitMerge() in vdbesort.c. (check-in: eec8c0df user: dan tags: experimental)
16:44
Add fault-injection and other tests (and fixes) to improve coverage of vdbesort.c. (check-in: 0e6defa6 user: dan tags: experimental)
2011-08-06
15:09
Fix a problem with building large indexes introduced by the previous commit. (check-in: 038ec9ea user: dan tags: experimental)
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to src/vdbesort.c. 

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      /* Write the size of the record in bytes to the output file */
      (void)sqlite3BtreeKeySize(pCsr->pCursor, &nKey);
      rc = vdbeSorterWriteVarint(pSorter->pTemp1, nKey, &iWriteOff);

      /* Make sure the aMalloc[] buffer is large enough for the record */
      if( rc==SQLITE_OK && nKey>nMalloc ){
        aMalloc = sqlite3DbReallocOrFree(db, aMalloc, nKey);
        if( !aMalloc ){
          rc = SQLITE_NOMEM;


        }
      }

      /* Write the record itself to the output file */
      if( rc==SQLITE_OK ){
        rc = sqlite3BtreeKey(pCsr->pCursor, 0, nKey, aMalloc);
        if( rc==SQLITE_OK ){
          rc = sqlite3OsWrite(pSorter->pTemp1, aMalloc, nKey, iWriteOff);
          iWriteOff += nKey;
        }
      }


    }

    assert( pSorter->nBtree==(
          iWriteOff-pSorter->iWriteOff-sqlite3VarintLen(pSorter->nBtree)
    ));
    pSorter->iWriteOff = iWriteOff;
    sqlite3DbFree(db, aMalloc);
  }

  pSorter->nBtree = 0;
................................................................................
** Copy the current sorter key into the memory cell pOut.
*/
int sqlite3VdbeSorterRowkey(sqlite3 *db, VdbeCursor *pCsr, Mem *pOut){
  VdbeSorter *pSorter = pCsr->pSorter;
  VdbeSorterIter *pIter;

  pIter = &pSorter->aIter[ pSorter->aTree[1] ];







  if( sqlite3VdbeMemGrow(pOut, pIter->nKey, 0) ){
    return SQLITE_NOMEM;
  }
  pOut->n = pIter->nKey;
  MemSetTypeFlag(pOut, MEM_Blob);
  memcpy(pOut->z, pIter->aKey, pIter->nKey);

  return SQLITE_OK;
}









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      /* Write the size of the record in bytes to the output file */
      (void)sqlite3BtreeKeySize(pCsr->pCursor, &nKey);
      rc = vdbeSorterWriteVarint(pSorter->pTemp1, nKey, &iWriteOff);

      /* Make sure the aMalloc[] buffer is large enough for the record */
      if( rc==SQLITE_OK && nKey>nMalloc ){
        aMalloc = sqlite3DbReallocOrFree(db, aMalloc, nKey);
        if( !aMalloc ){ 
          rc = SQLITE_NOMEM; 
        }else{
          nMalloc = nKey;
        }
      }

      /* Write the record itself to the output file */
      if( rc==SQLITE_OK ){
        rc = sqlite3BtreeKey(pCsr->pCursor, 0, nKey, aMalloc);
        if( rc==SQLITE_OK ){
          rc = sqlite3OsWrite(pSorter->pTemp1, aMalloc, nKey, iWriteOff);
          iWriteOff += nKey;
        }
      }

      if( rc!=SQLITE_OK ) break;
    }

    assert( rc!=SQLITE_OK || pSorter->nBtree==(
          iWriteOff-pSorter->iWriteOff-sqlite3VarintLen(pSorter->nBtree)
    ));
    pSorter->iWriteOff = iWriteOff;
    sqlite3DbFree(db, aMalloc);
  }

  pSorter->nBtree = 0;
................................................................................
** Copy the current sorter key into the memory cell pOut.
*/
int sqlite3VdbeSorterRowkey(sqlite3 *db, VdbeCursor *pCsr, Mem *pOut){
  VdbeSorter *pSorter = pCsr->pSorter;
  VdbeSorterIter *pIter;

  pIter = &pSorter->aIter[ pSorter->aTree[1] ];

  /* Coverage testing note: As things are currently, this call will always
  ** succeed. This is because the memory cell passed by the VDBE layer 
  ** happens to be the same one as was used to assemble the keys before they
  ** were passed to the sorter - meaning it is always large enough for the
  ** largest key. But this could change very easily, so we leave the call
  ** to sqlite3VdbeMemGrow() in. */
  if( sqlite3VdbeMemGrow(pOut, pIter->nKey, 0) ){
    return SQLITE_NOMEM;
  }
  pOut->n = pIter->nKey;
  MemSetTypeFlag(pOut, MEM_Blob);
  memcpy(pOut->z, pIter->aKey, pIter->nKey);

  return SQLITE_OK;
}

Changes to test/index4.test. 

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  do_execsql_test 1.5 {
    PRAGMA integrity_check 
  } {ok}

  sqlite3_soft_heap_limit $soft_limit
}












































finish_test









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  do_execsql_test 1.5 {
    PRAGMA integrity_check 
  } {ok}

  sqlite3_soft_heap_limit $soft_limit
}


do_execsql_test 1.6 {
  BEGIN;
    DROP TABLE t1;
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES('a');
    INSERT INTO t1 VALUES('b');
    INSERT INTO t1 VALUES('c');
    INSERT INTO t1 VALUES('d');
    INSERT INTO t1 VALUES('e');
    INSERT INTO t1 VALUES('f');
    INSERT INTO t1 VALUES('g');
    INSERT INTO t1 VALUES(NULL);
    INSERT INTO t1 SELECT randomblob(1202) FROM t1;     --    16
    INSERT INTO t1 SELECT randomblob(2202) FROM t1;     --    32
    INSERT INTO t1 SELECT randomblob(3202) FROM t1;     --    64
    INSERT INTO t1 SELECT randomblob(4202) FROM t1;     --   128
    INSERT INTO t1 SELECT randomblob(5202) FROM t1;     --   256
  COMMIT;
  CREATE INDEX i1 ON t1(x); 
  PRAGMA integrity_check
} {ok}

do_execsql_test 1.7 {
  BEGIN;
    DROP TABLE t1;
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES('a');
  COMMIT;
  CREATE INDEX i1 ON t1(x); 
  PRAGMA integrity_check
} {ok}

do_execsql_test 1.8 {
  BEGIN;
    DROP TABLE t1;
    CREATE TABLE t1(x);
  COMMIT;
  CREATE INDEX i1 ON t1(x); 
  PRAGMA integrity_check
} {ok}


finish_test

Added test/indexfault.test. 



















































































































































































































































































































































































































































































































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# 2011 August 08
#
# 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.
#
#***********************************************************************
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl

set testprefix indexfault

#-------------------------------------------------------------------------
# These tests - indexfault-1.* - Build an index on a smallish table with
# all different kinds of fault-injection. The CREATE INDEX is run once
# with default options and once with a 50KB soft-heap-limit.
#
do_execsql_test 1.0 {
  BEGIN;
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(randomblob(202));
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --     2
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --     4
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --     8
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --    16
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --    32
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --    64
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --   128
    INSERT INTO t1 SELECT randomblob(202) FROM t1;     --   256
  COMMIT;
}
faultsim_save_and_close

do_faultsim_test 1.1 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE INDEX i1 ON t1(x) }
  faultsim_test_result {0 {}} 
  faultsim_integrity_check
}
ifcapable memorymanage {
  set soft_limit [sqlite3_soft_heap_limit 50000]
  do_faultsim_test 2.1 -prep {
    faultsim_restore_and_reopen
  } -body {
    execsql { CREATE INDEX i1 ON t1(x) }
    faultsim_test_result {0 {}} 
  }
  sqlite3_soft_heap_limit $soft_limit
}

#-------------------------------------------------------------------------
# These are similar to the indexfault-1.* tests, except they create an
# index with more than one column.
#
sqlite3 db test.db
do_execsql_test 2.0 {
  BEGIN;
    DROP TABLE IF EXISTS t1;
    CREATE TABLE t1(t,u,v,w,x,y,z);
    INSERT INTO t1 VALUES(
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30)
    );
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 2
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 4
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 8
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 16
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 32
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 64
    INSERT INTO t1 SELECT 
      randomblob(30), randomblob(30), randomblob(30), randomblob(30),
      randomblob(30), randomblob(30), randomblob(30) FROM t1;         -- 128
  COMMIT;
}
faultsim_save_and_close

do_faultsim_test 2.1 -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE INDEX i1 ON t1(t,u,v,w,x,y,z) }
  faultsim_test_result {0 {}} 
  faultsim_integrity_check
}
ifcapable memorymanage {
  set soft_limit [sqlite3_soft_heap_limit 50000]
  do_faultsim_test 2.2 -prep {
    faultsim_restore_and_reopen
  } -body {
    execsql { CREATE INDEX i1 ON t1(t,u,v,w,x,y,z) }
    faultsim_test_result {0 {}} 
  }
  sqlite3_soft_heap_limit $soft_limit
}

#-------------------------------------------------------------------------
# The following tests - indexfault-2.* - all attempt to build a index
# on table t1 in the main database with injected IO errors. Individual
# test cases work as follows:
#
#   3.1: IO errors injected into xOpen() calls.
#   3.2: As 7.1, but with a low (50KB) soft-heap-limit.
#
#   3.3: IO errors injected into the first 200 write() calls made on the
#        second temporary file.
#   3.4: As 7.3, but with a low (50KB) soft-heap-limit.
#
#

# Set up the custom fault-injector. This is further configured by using
# different values for $::custom_filter and different implementations
# of Tcl proc [xCustom] for each test case.
#
set FAULTSIM(custom)            [list      \
  -injectinstall   custom_injectinstall    \
  -injectstart     custom_injectstart      \
  -injectstop      custom_injectstop       \
  -injecterrlist   {{1 {disk I/O error}}}  \
  -injectuninstall custom_injectuninstall  \
]
proc custom_injectinstall {} {
  testvfs shmfault -default true
  shmfault filter $::custom_filter
  shmfault script xCustom
}
proc custom_injectuninstall {} {
  catch {db  close}
  catch {db2 close}
  shmfault delete
}
set ::custom_ifail -1
set ::custom_nfail -1
proc custom_injectstart {iFail} {
  set ::custom_ifail $iFail
  set ::custom_nfail 0
}
proc custom_injectstop {} {
  set ::custom_ifail -1
  return $::custom_nfail
}

# Set up a table to build indexes on. Save the setup using the 
# [faultsim_save_and_close] mechanism.
# 
sqlite3 db test.db
do_execsql_test 3.0 {
  BEGIN;
    DROP TABLE IF EXISTS t1;
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(randomblob(11000));
    INSERT INTO t1 SELECT randomblob(11001) FROM t1;     --     2
    INSERT INTO t1 SELECT randomblob(11002) FROM t1;     --     4
    INSERT INTO t1 SELECT randomblob(11003) FROM t1;     --     8
    INSERT INTO t1 SELECT randomblob(11004) FROM t1;     --    16
    INSERT INTO t1 SELECT randomblob(11005) FROM t1;     --    32
    INSERT INTO t1 SELECT randomblob(11006) FROM t1;     --    64
    INSERT INTO t1 SELECT randomblob(11007) FROM t1;     --   128
    INSERT INTO t1 SELECT randomblob(11008) FROM t1;     --   256
    INSERT INTO t1 SELECT randomblob(11009) FROM t1;     --   512
  COMMIT;
}
faultsim_save_and_close

set ::custom_filter xOpen
proc xCustom {args} {
  incr ::custom_ifail -1
  if {$::custom_ifail==0} {
    incr ::custom_nfail
    return "SQLITE_IOERR"
  }
  return "SQLITE_OK"
}
do_faultsim_test 3.1 -faults custom -prep {
  faultsim_restore_and_reopen
} -body {
  execsql { CREATE INDEX i1 ON t1(x) }
  faultsim_test_result {0 {}} 
}
ifcapable memorymanage {
  set soft_limit [sqlite3_soft_heap_limit 50000]
  do_faultsim_test 3.2 -faults custom -prep {
    faultsim_restore_and_reopen
  } -body {
    execsql { CREATE INDEX i1 ON t1(x) }
    faultsim_test_result {0 {}} 
  }
  sqlite3_soft_heap_limit $soft_limit
}

set ::custom_filter {xOpen xWrite}
proc xCustom {method args} {
  if {$method == "xOpen"} {
    if {[lindex $args 0] == ""} {
      incr ::nTmpOpen 1
      if {$::nTmpOpen == 3} { return "failme" }
    }
    return "SQLITE_OK"
  }
  if {$::custom_ifail<200 && [lindex $args 1] == "failme"} {
    incr ::custom_ifail -1
    if {$::custom_ifail==0} {
      incr ::custom_nfail
      return "SQLITE_IOERR"
    }
  }
  return "SQLITE_OK"
}

do_faultsim_test 3.3 -faults custom -prep {
  faultsim_restore_and_reopen
  set ::nTmpOpen 0
} -body {
  execsql { CREATE INDEX i1 ON t1(x) }
  faultsim_test_result {0 {}} 
}

ifcapable memorymanage {
  set soft_limit [sqlite3_soft_heap_limit 50000]
  do_faultsim_test 3.4 -faults custom -prep {
    faultsim_restore_and_reopen
    set ::nTmpOpen 0
  } -body {
    execsql { CREATE INDEX i1 ON t1(x) }
    faultsim_test_result {0 {}} 
  }
  sqlite3_soft_heap_limit $soft_limit
}

finish_test

Changes to test/permutations.test. 

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  misc7.test mutex2.test notify2.test onefile.test pagerfault2.test 
  savepoint4.test savepoint6.test select9.test 
  speed1.test speed1p.test speed2.test speed3.test speed4.test 
  speed4p.test sqllimits1.test tkt2686.test thread001.test thread002.test
  thread003.test thread004.test thread005.test trans2.test vacuum3.test 
  incrvacuum_ioerr.test autovacuum_crash.test btree8.test shared_err.test
  vtab_err.test walslow.test walcrash.test 
  walthread.test rtree3.test
}]
if {[info exists ::env(QUICKTEST_INCLUDE)]} {
  set allquicktests [concat $allquicktests $::env(QUICKTEST_INCLUDE)]
}

#############################################################################
# Start of tests








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  misc7.test mutex2.test notify2.test onefile.test pagerfault2.test 
  savepoint4.test savepoint6.test select9.test 
  speed1.test speed1p.test speed2.test speed3.test speed4.test 
  speed4p.test sqllimits1.test tkt2686.test thread001.test thread002.test
  thread003.test thread004.test thread005.test trans2.test vacuum3.test 
  incrvacuum_ioerr.test autovacuum_crash.test btree8.test shared_err.test
  vtab_err.test walslow.test walcrash.test 
  walthread.test rtree3.test indexfault.test
}]
if {[info exists ::env(QUICKTEST_INCLUDE)]} {
  set allquicktests [concat $allquicktests $::env(QUICKTEST_INCLUDE)]
}

#############################################################################
# Start of tests

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