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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

Artifact 8bd4c6b87367c358981b6a47dc3d654fa60bff90:


# 2014 August 30
#
# 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.
#
#***********************************************************************
#

if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
}
source $testdir/tester.tcl
set ::testprefix rbu3


# Run the RBU in file $rbu on target database $target until completion.
#
proc run_rbu {target rbu} {
  sqlite3rbu rbu $target $rbu
  while { [rbu step]=="SQLITE_OK" } {}
  rbu close
}

forcedelete test.db-oal rbu.db
db close
sqlite3_shutdown
sqlite3_config_uri 1
reset_db

#--------------------------------------------------------------------
# Test that for an RBU to be applied, no corruption results if the
# affinities on the source and target table do not match.
#
do_execsql_test 1.0 {
  CREATE TABLE x1(a INTEGER PRIMARY KEY, b TEXT, c REAL);
  CREATE INDEX i1 ON x1(b, c);
} {}

do_test 1.1 {
  sqlite3 db2 rbu.db
  db2 eval {
    CREATE TABLE data_x1(a, b, c, rbu_control);
    INSERT INTO data_x1 VALUES(1, '123', '123', 0);
    INSERT INTO data_x1 VALUES(2, 123, 123, 0);
  }
  db2 close
  run_rbu test.db rbu.db
} {SQLITE_DONE}

do_execsql_test 1.2 {
  PRAGMA integrity_check;
} {ok}

#--------------------------------------------------------------------
# Test that NULL values may not be inserted into INTEGER PRIMARY KEY
# columns.
#
forcedelete rbu.db
reset_db

do_execsql_test 2.0 {
  CREATE TABLE x1(a INTEGER PRIMARY KEY, b TEXT, c REAL);
  CREATE INDEX i1 ON x1(b, c);
} {}

foreach {tn rbudb} {
  1 {
    CREATE TABLE data_x1(a, b, c, rbu_control);
    INSERT INTO data_x1 VALUES(NULL, 'a', 'b', 0);
  }

  2 {
    CREATE TABLE data_x1(c, b, a, rbu_control);
    INSERT INTO data_x1 VALUES('b', 'a', NULL, 0);
  }
} {
  do_test 2.$tn.1 {
    forcedelete rbu.db
    sqlite3 db2 rbu.db
    db2 eval $rbudb
    db2 close
    list [catch { run_rbu test.db rbu.db } msg] $msg
  } {1 {SQLITE_MISMATCH - datatype mismatch}}

  do_execsql_test 2.1.2 {
    PRAGMA integrity_check;
  } {ok}
}

#--------------------------------------------------------------------
# Test that missing columns are detected.
#
forcedelete rbu.db
reset_db

do_execsql_test 2.0 {
  CREATE TABLE x1(a INTEGER PRIMARY KEY, b, c);
  CREATE INDEX i1 ON x1(b, c);
} {}

do_test 2.1 {
  sqlite3 db2 rbu.db
  db2 eval {
    CREATE TABLE data_x1(a, b, rbu_control);
    INSERT INTO data_x1 VALUES(1, 'a', 0);
  }
  db2 close
  list [catch { run_rbu test.db rbu.db } msg] $msg
} {1 {SQLITE_ERROR - column missing from data_x1: c}}

do_execsql_test 2.2 {
  PRAGMA integrity_check;
} {ok}

# Also extra columns.
#
do_execsql_test 2.3 {
  CREATE TABLE x2(a INTEGER PRIMARY KEY, b, c);
  CREATE INDEX i2 ON x2(b, c);
} {}

do_test 2.4 {
  forcedelete rbu.db
  sqlite3 db2 rbu.db
  db2 eval {
    CREATE TABLE data_x2(a, b, c, d, rbu_control);
    INSERT INTO data_x2 VALUES(1, 'a', 2, 3, 0);
  }
  db2 close
  list [catch { run_rbu test.db rbu.db } msg] $msg
} {1 SQLITE_ERROR}

do_execsql_test 2.5 {
  PRAGMA integrity_check;
} {ok}


#-------------------------------------------------------------------------
# Test that sqlite3rbu_create_vfs() returns an error if the requested 
# parent VFS is unknown.
#
# And that nothing disasterous happens if a VFS name passed to
# sqlite3rbu_destroy_vfs() is unknown or not an RBU vfs.
#
do_test 3.1 {
  list [catch {sqlite3rbu_create_vfs xyz nosuchparent} msg] $msg
} {1 SQLITE_NOTFOUND}

do_test 3.2 {
  sqlite3rbu_destroy_vfs nosuchvfs
  sqlite3rbu_destroy_vfs unix
  sqlite3rbu_destroy_vfs win32
} {}

#-------------------------------------------------------------------------
# Test that it is an error to specify an explicit VFS that does not 
# include rbu VFS functionality.
#
do_test 4.1 {
  testvfs tvfs
  sqlite3rbu rbu file:test.db?vfs=tvfs rbu.db 
  list [catch { rbu step } msg] $msg
} {0 SQLITE_ERROR}
do_test 4.2 {
  list [catch { rbu close } msg] $msg
} {1 {SQLITE_ERROR - rbu vfs not found}}
tvfs delete

#-------------------------------------------------------------------------
# Test a large rbu update to ensure that wal_autocheckpoint does not get
# in the way.
#
forcedelete rbu.db
reset_db
do_execsql_test 5.1 {
  CREATE TABLE x1(a, b, c, PRIMARY KEY(a)) WITHOUT ROWID;
  CREATE INDEX i1 ON x1(a);

  ATTACH 'rbu.db' AS rbu;
  CREATE TABLE rbu.data_x1(a, b, c, rbu_control);
  WITH s(a, b, c) AS (
    SELECT randomblob(300), randomblob(300), 1
    UNION ALL
    SELECT randomblob(300), randomblob(300), c+1 FROM s WHERE c<2000
  )
  INSERT INTO data_x1 SELECT a, b, c, 0 FROM s;
}

do_test 5.2 {
  sqlite3rbu rbu test.db rbu.db
  while {[rbu step]=="SQLITE_OK" && [file exists test.db-wal]==0} {}
  rbu close
} {SQLITE_OK}

do_test 5.3 {
  expr {[file size test.db-wal] > (1024 * 1200)}
} 1

do_test 6.1 { sqlite3rbu_internal_test } {}

finish_test