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test/notify1.test
500 строк13 KB
mistachkin
Add retry logic for AV defense to winOpen. Also, refactor test suite to allow the key Tcl file operations (e.g. copy and delete) to be retried.
02 авг 2011, 04:57
02 авг 2011, 04:57fda06be
# 2009 March 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.
#
#***********************************************************************
# This file implements regression tests for SQLite library.  The
# focus of this file is testing the sqlite3_unlock_notify() API.
#
# $Id: notify1.test,v 1.4 2009/06/05 17:09:12 drh Exp $

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

ifcapable !unlock_notify||!shared_cache {
  finish_test
  return
}
db close
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]

#-------------------------------------------------------------------------
# Warm body test. Test that an unlock-notify callback can be registered 
# and that it is invoked.
#
do_test notify1-1.1 {
  sqlite3 db test.db
  sqlite3 db2 test.db
  execsql { CREATE TABLE t1(a, b) }
} {}
do_test notify1-1.2 {
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES(1, 2);
  }
  catchsql { INSERT INTO t1 VALUES(3, 4) } db2
} {1 {database table is locked}}
do_test notify1-1.3 {
  set zScript ""
  db2 unlock_notify {
    set zScript "db2 eval { INSERT INTO t1 VALUES(3, 4) }"
  }
  execsql { SELECT * FROM t1 }
} {1 2}
do_test notify1-1.4 {
  set zScript
} {}
do_test notify1-1.5 {
  execsql { COMMIT }
  eval $zScript
  execsql { SELECT * FROM t1 }
} {1 2 3 4}

#-------------------------------------------------------------------------
# Verify that invoking the "unlock_notify" method with no arguments
# (which is the equivalent of invoking sqlite3_unlock_notify() with
# a NULL xNotify argument) cancels a pending notify callback.
#
do_test notify1-1.11 {
  execsql { DROP TABLE t1; CREATE TABLE t1(a, b) }
} {}
do_test notify1-1.12 {
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES(1, 2);
  }
  catchsql { INSERT INTO t1 VALUES(3, 4) } db2
} {1 {database table is locked}}
do_test notify1-1.13 {
  set zScript ""
  db2 unlock_notify {
    set zScript "db2 eval { INSERT INTO t1 VALUES(3, 4) }"
  }
  execsql { SELECT * FROM t1 }
} {1 2}
do_test notify1-1.14 {
  set zScript
} {}
do_test notify1-1.15 {
  db2 unlock_notify
  execsql { COMMIT }
  eval $zScript
  execsql { SELECT * FROM t1 }
} {1 2}

#-------------------------------------------------------------------------
# The following tests, notify1-2.*, test that deadlock is detected 
# correctly.
# 
do_test notify1-2.1 {
  execsql { 
    CREATE TABLE t2(a, b);
    INSERT INTO t2 VALUES('I', 'II');
  }
} {}

#
# Test for simple deadlock involving two database connections.
#
# 1. Grab a write-lock on t1 with [db]. Then grab a read-lock on t2 with [db2].
# 2. Try to grab a read-lock on t1 with [db2] (fails).
# 3. Have [db2] wait on the read-lock it failed to obtain in step 2.
# 4. Try to grab a write-lock on t2 with [db] (fails).
# 5. Try to have [db] wait on the lock from step 4. Fails, as the system
#    would be deadlocked (since [db2] is already waiting on [db], and this
#    operation would have [db] wait on [db2]).
#
do_test notify1-2.2.1 {
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES(5, 6);
  }
  execsql {
    BEGIN;
    SELECT * FROM t2;
  } db2
} {I II}
do_test notify1-2.2.2 {
  catchsql { SELECT * FROM t1 } db2
} {1 {database table is locked: t1}}
do_test notify1-2.2.3 {
  db2 unlock_notify {lappend unlock_notify db2}
} {}
do_test notify1-2.2.4 {
  catchsql { INSERT INTO t2 VALUES('III', 'IV') }
} {1 {database table is locked: t2}}
do_test notify1-2.2.5 {
  set rc [catch { db unlock_notify {lappend unlock_notify db} } msg]
  list $rc $msg
} {1 {database is deadlocked}}

#
# Test for slightly more complex deadlock involving three database
# connections: db, db2 and db3.
#
do_test notify1-2.3.1 {
  db close
  db2 close
  forcedelete test.db test2.db test3.db
  foreach con {db db2 db3} {
    sqlite3 $con test.db
    $con eval { ATTACH 'test2.db' AS aux2 }
    $con eval { ATTACH 'test3.db' AS aux3 }
  }
  execsql {
    CREATE TABLE main.t1(a, b);
    CREATE TABLE aux2.t2(a, b);
    CREATE TABLE aux3.t3(a, b);
  }
} {}
do_test notify1-2.3.2 {
  execsql { BEGIN ; INSERT INTO t1 VALUES(1, 2) } db
  execsql { BEGIN ; INSERT INTO t2 VALUES(1, 2) } db2
  execsql { BEGIN ; INSERT INTO t3 VALUES(1, 2) } db3
} {}
do_test notify1-2.3.3 {
  catchsql { SELECT * FROM t2 } db
} {1 {database table is locked: t2}}
do_test notify1-2.3.4 {
  catchsql { SELECT * FROM t3 } db2
} {1 {database table is locked: t3}}
do_test notify1-2.3.5 {
  catchsql { SELECT * FROM t1 } db3
} {1 {database table is locked: t1}}
do_test notify1-2.3.6 {
  set lUnlock [list]
  db  unlock_notify {lappend lUnlock db}
  db2 unlock_notify {lappend lUnlock db2}
} {}
do_test notify1-2.3.7 {
  set rc [catch { db3 unlock_notify {lappend lUnlock db3} } msg]
  list $rc $msg
} {1 {database is deadlocked}}
do_test notify1-2.3.8 {
  execsql { COMMIT }
  set lUnlock
} {}
do_test notify1-2.3.9 {
  db3 unlock_notify {lappend lUnlock db3} 
  set lUnlock
} {db3}
do_test notify1-2.3.10 {
  execsql { COMMIT } db2
  set lUnlock
} {db3 db}
do_test notify1-2.3.11 {
  execsql { COMMIT } db3
  set lUnlock
} {db3 db db2}
catch { db3 close }
catch { db2 close }
catch { db close }

#-------------------------------------------------------------------------
# The following tests, notify1-3.* and notify1-4.*, test that callbacks 
# can be issued when there are many (>16) connections waiting on a single 
# unlock event.
# 
foreach {tn nConn} {3 20 4 76} {
  do_test notify1-$tn.1 {
    sqlite3 db test.db
    execsql {
      BEGIN;
      INSERT INTO t1 VALUES('a', 'b');
    }
  } {}
  set lUnlock [list]
  set lUnlockFinal [list]
  for {set ii 1} {$ii <= $nConn} {incr ii} {
    do_test notify1-$tn.2.$ii.1 {
      set cmd "db$ii"
      sqlite3 $cmd test.db
      catchsql { SELECT * FROM t1 } $cmd
    } {1 {database table is locked: t1}}
    do_test notify1-$tn.2.$ii.2 {
      $cmd unlock_notify "lappend lUnlock $ii"
    } {}
    lappend lUnlockFinal $ii
  }
  do_test notify1-$tn.3 {
    set lUnlock
  } {}
  do_test notify1-$tn.4 {
    execsql {COMMIT}
    lsort -integer $lUnlock
  } $lUnlockFinal
  do_test notify1-$tn.5 {
    for {set ii 1} {$ii <= $nConn} {incr ii} {
      "db$ii" close
    }
  } {}
}
db close

#-------------------------------------------------------------------------
# These tests, notify1-5.*, test that a malloc() failure that occurs while
# allocating an array to use as an argument to an unlock-notify callback
# is handled correctly.
# 
source $testdir/malloc_common.tcl
do_malloc_test notify1-5 -tclprep {
  set ::lUnlock [list]
  execsql {
    CREATE TABLE t1(a, b);
    BEGIN;
    INSERT INTO t1 VALUES('a', 'b');
  }
  for {set ii 1} {$ii <= 60} {incr ii} {
    set cmd "db$ii"
    sqlite3 $cmd test.db
    catchsql { SELECT * FROM t1 } $cmd
    $cmd unlock_notify "lappend ::lUnlock $ii"
  }
} -sqlbody {
  COMMIT;
} -cleanup {
  # One of two things should have happened:
  #
  #   1) The transaction opened by [db] was not committed. No unlock-notify
  #      callbacks were invoked, OR
  #   2) The transaction opened by [db] was committed and 60 unlock-notify
  #      callbacks were invoked.
  #
  do_test notify1-5.systemstate {
    expr { ([llength $::lUnlock]==0 && [sqlite3_get_autocommit db]==0)
        || ([llength $::lUnlock]==60 && [sqlite3_get_autocommit db]==1)
    }
  } {1}
  for {set ii 1} {$ii <= 60} {incr ii} { "db$ii" close }
}

#-------------------------------------------------------------------------
# Test cases notify1-6.* test cases where the following occur:
# 
#   notify1-6.1.*: Test encountering an SQLITE_LOCKED error when the
#                  "blocking connection" has already been set by a previous
#                  SQLITE_LOCKED.
#
#   notify1-6.2.*: Test encountering an SQLITE_LOCKED error when already
#                  waiting on an unlock-notify callback.
#
#   notify1-6.3.*: Test that if an SQLITE_LOCKED error is encountered while
#                  already waiting on an unlock-notify callback, and then
#                  the blocker that caused the SQLITE_LOCKED commits its
#                  transaction, the unlock-notify callback is not invoked.
#
#   notify1-6.4.*: Like 6.3.*, except that instead of the second blocker
#                  committing its transaction, the first does. The 
#                  unlock-notify callback is therefore invoked.
#
db close
do_test notify1-6.1.1 {
  forcedelete test.db test2.db
  foreach conn {db db2 db3} {
    sqlite3 $conn test.db
    execsql { ATTACH 'test2.db' AS two } $conn
  }
  execsql {
    CREATE TABLE t1(a, b);
    CREATE TABLE two.t2(a, b);
  }
  execsql { 
    BEGIN;
    INSERT INTO t1 VALUES(1, 2);
  } db2
  execsql { 
    BEGIN;
    INSERT INTO t2 VALUES(1, 2);
  } db3
} {}
do_test notify1-6.1.2 {
  catchsql { SELECT * FROM t2 }
} {1 {database table is locked: t2}}
do_test notify1-6.1.3 {
  catchsql { SELECT * FROM t1 }
} {1 {database table is locked: t1}}

do_test notify1-6.2.1 {
  set unlocked 0
  db unlock_notify {set unlocked 1}
  set unlocked
} {0}
do_test notify1-6.2.2 {
  catchsql { SELECT * FROM t2 }
} {1 {database table is locked: t2}}
do_test notify1-6.2.3 {
  execsql { COMMIT } db2
  set unlocked
} {1}

do_test notify1-6.3.1 {
  execsql { 
    BEGIN;
    INSERT INTO t1 VALUES(3, 4);
  } db2
} {}
do_test notify1-6.3.2 {
  catchsql { SELECT * FROM t1 }
} {1 {database table is locked: t1}}
do_test notify1-6.3.3 {
  set unlocked 0
  db unlock_notify {set unlocked 1}
  set unlocked
} {0}
do_test notify1-6.3.4 {
  catchsql { SELECT * FROM t2 }
} {1 {database table is locked: t2}}
do_test notify1-6.3.5 {
  execsql { COMMIT } db3
  set unlocked
} {0}

do_test notify1-6.4.1 {
  execsql { 
    BEGIN;
    INSERT INTO t2 VALUES(3, 4);
  } db3
  catchsql { SELECT * FROM t2 }
} {1 {database table is locked: t2}}
do_test notify1-6.4.2 {
  execsql { COMMIT } db2
  set unlocked
} {1}
do_test notify1-6.4.3 {
  execsql { COMMIT } db3
} {}
db close
db2 close
db3 close

#-------------------------------------------------------------------------
# Test cases notify1-7.* tests that when more than one distinct 
# unlock-notify function is registered, all are invoked correctly.
#
proc unlock_notify {} {
  incr ::unlock_notify
}
do_test notify1-7.1 {
  foreach conn {db db2 db3} {
    sqlite3 $conn test.db
  }
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES(5, 6);
  }
} {}
do_test notify1-7.2 {
  catchsql { SELECT * FROM t1 } db2
} {1 {database table is locked: t1}}
do_test notify1-7.3 {
  catchsql { SELECT * FROM t1 } db3
} {1 {database table is locked: t1}}
do_test notify1-7.4 {
  set unlock_notify 0
  db2 unlock_notify unlock_notify
  sqlite3_unlock_notify db3
} {SQLITE_OK}
do_test notify1-7.5 {
  set unlock_notify
} {0}
do_test notify1-7.6 {
  execsql { COMMIT }
  set unlock_notify
} {2}

#-------------------------------------------------------------------------
# Test cases notify1-8.* tests that the correct SQLITE_LOCKED extended 
# error code is returned in various scenarios.
#
do_test notify1-8.1 {
  execsql {
    BEGIN;
    INSERT INTO t1 VALUES(7, 8);
  }
  catchsql { SELECT * FROM t1 } db2
} {1 {database table is locked: t1}}
do_test notify1-8.2 {
  sqlite3_extended_errcode db2
} {SQLITE_LOCKED_SHAREDCACHE}

do_test notify1-8.3 {
  execsql {
    COMMIT;
    BEGIN EXCLUSIVE;
  }
  catchsql { SELECT * FROM t1 } db2
} {1 {database schema is locked: main}}
do_test notify1-8.4 {
  sqlite3_extended_errcode db2
} {SQLITE_LOCKED_SHAREDCACHE}

do_test notify1-8.X {
  execsql { COMMIT } 
} {}

#-------------------------------------------------------------------------
# Test cases notify1-9.* test the shared-cache 'pending-lock' feature.
#
do_test notify1-9.1 {
  execsql {
    CREATE TABLE t2(a, b);
    BEGIN;
    SELECT * FROM t1;
  } db2
} {1 2 3 4 5 6 7 8}
do_test notify1-9.2 {
  execsql { SELECT * FROM t1 } db3
} {1 2 3 4 5 6 7 8}
do_test notify1-9.3 {
  catchsql { 
    BEGIN;
    INSERT INTO t1 VALUES(9, 10);
  }
} {1 {database table is locked: t1}}
do_test notify1-9.4 {
  catchsql { SELECT * FROM t2 } db3
} {1 {database table is locked}}
do_test notify1-9.5 {
  execsql  { COMMIT } db2
  execsql { SELECT * FROM t2 } db3
} {}
do_test notify1-9.6 {
  execsql  { COMMIT }
} {}

do_test notify1-9.7 {
  execsql {
    BEGIN;
    SELECT * FROM t1;
  } db2
} {1 2 3 4 5 6 7 8}
do_test notify1-9.8 {
  execsql { SELECT * FROM t1 } db3
} {1 2 3 4 5 6 7 8}
do_test notify1-9.9 {
  catchsql { 
    BEGIN;
    INSERT INTO t1 VALUES(9, 10);
  }
} {1 {database table is locked: t1}}
do_test notify1-9.10 {
  catchsql { SELECT * FROM t2 } db3
} {1 {database table is locked}}
do_test notify1-9.11 {
  execsql  { COMMIT }
  execsql { SELECT * FROM t2 } db3
} {}
do_test notify1-9.12 {
  execsql  { COMMIT } db2
} {}

db close
db2 close
db3 close
sqlite3_enable_shared_cache $::enable_shared_cache
finish_test