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Initial revision

# 2010 August 19
#
# 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 that the current version of SQLite
# is capable of reading and writing databases created by previous
# versions, and vice-versa.
#
# To use this test, old versions of the testfixture process should be
# copied into the working directory alongside the new version. The old
# versions should be named "testfixtureXXX" (or testfixtureXXX.exe on
# windows), where XXX can be any string.
#
# This test file uses the tcl code for controlling a second testfixture
# process located in lock_common.tcl. See the commments in lock_common.tcl 
# for documentation of the available commands.
#

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

# Search for binaries to test against. Any executable files that match
# our naming convention are assumed to be testfixture binaries to test
# against.
#
set binaries [list]
set pattern "[file tail [info nameofexec]]?*"
if {$tcl_platform(platform)=="windows"} {
  set pattern [string map {\.exe {}} $pattern]
}
foreach file [glob -nocomplain $pattern] {
  if {[file executable $file] && [file isfile $file]} {lappend binaries $file}
}
if {[llength $binaries]==0} {
  puts "WARNING: No historical binaries to test against."
  puts "WARNING: No backwards-compatibility tests have been run."
  finish_test
  return
}
proc get_version {binary} {
  set chan [launch_testfixture $binary]
  set v [testfixture $chan { sqlite3 -version }]
  close $chan
  set v
}
foreach bin $binaries {
  puts -nonewline "Testing against $bin - "
  flush stdout
  puts "version [get_version $bin]"
}

proc do_backcompat_test {rv bin1 bin2 script} {

  forcedelete test.db

  if {$bin1 != ""} { set ::bc_chan1 [launch_testfixture $bin1] }
  set ::bc_chan2 [launch_testfixture $bin2]

  if { $rv } {
    proc code2 {tcl} { uplevel #0 $tcl }
    if {$bin1 != ""} { proc code2 {tcl} { testfixture $::bc_chan1 $tcl } }
    proc code1 {tcl} { testfixture $::bc_chan2 $tcl }
  } else {
    proc code1 {tcl} { uplevel #0 $tcl }
    if {$bin1 != ""} { proc code1 {tcl} { testfixture $::bc_chan1 $tcl } }
    proc code2 {tcl} { testfixture $::bc_chan2 $tcl }
  }

  proc sql1 sql { code1 [list db eval $sql] }
  proc sql2 sql { code2 [list db eval $sql] }

  code1 { sqlite3 db test.db }
  code2 { sqlite3 db test.db }

  uplevel $script

  catch { code1 { db close } }
  catch { code2 { db close } }
  catch { close $::bc_chan2 }
  catch { close $::bc_chan1 }
}

array set ::incompatible [list]
proc do_allbackcompat_test {script} {

  foreach bin $::binaries {
    set nErr [set_test_counter errors]
    foreach dir {0 1} {

      set bintag [string map {testfixture {}} $bin]
      set bintag [string map {\.exe {}} $bintag]
      if {$bintag == ""} {set bintag self}
      set ::bcname ".$bintag.$dir."

      rename do_test _do_test
      proc do_test {nm sql res} {
        set nm [regsub {\.} $nm $::bcname]
        uplevel [list _do_test $nm $sql $res]
      }

      do_backcompat_test $dir {} $bin $script

      rename do_test {}
      rename _do_test do_test
    }
    if { $nErr < [set_test_counter errors] } {
      set ::incompatible([get_version $bin]) 1
    }
  }
}

proc read_file {zFile} {
  set zData {}
  if {[file exists $zFile]} {
    set fd [open $zFile]
    fconfigure $fd -translation binary -encoding binary

    if {[file size $zFile]<=$::sqlite_pending_byte || $zFile != "test.db"} {
      set zData [read $fd]
    } else {
      set zData [read $fd $::sqlite_pending_byte]
      append zData [string repeat x 512]
      seek $fd [expr $::sqlite_pending_byte+512] start
      append zData [read $fd]
    }

    close $fd
  }
  return $zData
}
proc write_file {zFile zData} {
  set fd [open $zFile w]
  fconfigure $fd -translation binary -encoding binary
  puts -nonewline $fd $zData
  close $fd
}
proc read_file_system {} {
  set ret [list]
  foreach f {test.db test.db-journal test.db-wal} { lappend ret [read_file $f] }
  set ret
}
proc write_file_system {data} {
  foreach f {test.db test.db-journal test.db-wal} d $data { 
    if {[string length $d] == 0} {
      forcedelete $f
    } else {
      write_file $f $d
    }
  }
}

#-------------------------------------------------------------------------
# Actual tests begin here.
#
# This first block of tests checks to see that the same database and 
# journal files can be used by old and new versions. WAL and wal-index
# files are tested separately below.
#
do_allbackcompat_test {

  # Test that database files are backwards compatible.
  #
  do_test backcompat-1.1.1 { sql1 { 
    CREATE TABLE t1(a PRIMARY KEY, b UNIQUE);
    INSERT INTO t1 VALUES('abc', 'def');
  } } {}
  do_test backcompat-1.1.2 { sql2 { SELECT * FROM t1; } } {abc def}
  do_test backcompat-1.1.3 { sql2 { INSERT INTO t1 VALUES('ghi', 'jkl'); } } {}
  do_test backcompat-1.1.4 { sql1 { SELECT * FROM t1; } } {abc def ghi jkl}
  do_test backcompat-1.1.5 { sql1 { PRAGMA integrity_check } } {ok}
  do_test backcompat-1.1.6 { sql2 { PRAGMA integrity_check } } {ok}

  # Test that one version can roll back a hot-journal file left in the
  # file-system by the other version.
  #
  # Each test case is named "backcompat-1.X...", where X is either 0 or
  # 1. If it is 0, then the current version creates a journal file that
  # the old versions try to read. Otherwise, if X is 1, then the old version
  # creates the journal file and we try to read it with the current version.
  #
  do_test backcompat-1.2.1 { sql1 {
    PRAGMA cache_size = 10;
    BEGIN;
      INSERT INTO t1 VALUES(randomblob(400), randomblob(400));
      INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
      INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
      INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
      INSERT INTO t1 SELECT randomblob(400), randomblob(400) FROM t1;
    COMMIT;
  } } {}
  set cksum1 [sql1 {SELECT md5sum(a), md5sum(b) FROM t1}]
  set cksum2 [sql2 {SELECT md5sum(a), md5sum(b) FROM t1}]
  do_test backcompat-1.2.2 [list string compare $cksum1 $cksum2] 0

  do_test backcompat-1.2.3 { sql1 {
    BEGIN;
      UPDATE t1 SET a = randomblob(500);
  } } {}
  set data [read_file_system]

  do_test backcompat-1.2.4 { sql1 { COMMIT } } {}

  set same [expr {[sql2 {SELECT md5sum(a), md5sum(b) FROM t1}] == $cksum2}]
  do_test backcompat-1.2.5 [list set {} $same] 0

  code1 { db close }
  code2 { db close }
  write_file_system $data
  code1 { sqlite3 db test.db }
  code2 { sqlite3 db test.db }

  set same [expr {[sql2 {SELECT md5sum(a), md5sum(b) FROM t1}] == $cksum2}]
  do_test backcompat-1.2.6 [list set {} $same] 1

  do_test backcompat-1.2.7 { sql1 { PRAGMA integrity_check } } {ok}
  do_test backcompat-1.2.8 { sql2 { PRAGMA integrity_check } } {ok}
}
foreach k [lsort [array names ::incompatible]] {
  puts "ERROR: Detected journal incompatibility with version $k"
}
unset ::incompatible


#-------------------------------------------------------------------------
# Test that WAL and wal-index files may be shared between different 
# SQLite versions.
#
do_allbackcompat_test {
  if {[code1 {sqlite3 -version}] >= "3.7.0"
   && [code2 {sqlite3 -version}] >= "3.7.0"
  } {

    do_test backcompat-2.1.1 { sql1 {
      PRAGMA journal_mode = WAL;
      CREATE TABLE t1(a PRIMARY KEY, b UNIQUE);
      INSERT INTO t1 VALUES('I', 1);
      INSERT INTO t1 VALUES('II', 2);
      INSERT INTO t1 VALUES('III', 3);
      SELECT * FROM t1;
    } } {wal I 1 II 2 III 3}
    do_test backcompat-2.1.2 { sql2 {
      SELECT * FROM t1;
    } } {I 1 II 2 III 3}

    set data [read_file_system]
    code1 {db close}
    code2 {db close}
    write_file_system $data
    code1 {sqlite3 db test.db}
    code2 {sqlite3 db test.db}

    # The WAL file now in the file-system was created by the [code1]
    # process. Check that the [code2] process can recover the log.
    #
    do_test backcompat-2.1.3 { sql2 {
      SELECT * FROM t1;
    } } {I 1 II 2 III 3}
    do_test backcompat-2.1.4 { sql1 {
      SELECT * FROM t1;
    } } {I 1 II 2 III 3}
  }
}

#-------------------------------------------------------------------------
# Test that FTS3 tables may be read/written by different versions of 
# SQLite. 
#
set contents {
  CREATE VIRTUAL TABLE t1 USING fts3(a, b);
}
foreach {num doc} {
  one "jk zm jk eczkjblu urvysbnykk sk gnl jk ttvgf hmjf"
  two "jk bnhc jjrxpjkb mjpavjuhw fibokdry igju jk zm zm xh"
  three "wxe ogttbykvt uhzq xr iaf zf urvysbnykk aayxpmve oacaxgjoo mjpavjuhw"
  four "gazrt jk ephknonq myjp uenvbm wuvajhwqz jk zm xnxhf nvfasfh"
  five "zm aayxpmve csjqxhgj xnxhf xr jk aayxpmve xnxhf zm zm"
  six "sokcyf zm ogyavjvv jk zm fibokdry zm jk igju igju"
  seven "vgsld bvgimjik xuprtlyle jk akmikrqyt jk aayxpmve hkfoudzftq ddjj"
  eight "zm uhzq ovkyevlgv zk uenvbm csjqxhgj jk vgsld pgybs jk"
  nine  "zm agmckuiu zexh fibokdry jk uhzq bu tugflixoex xnxhf sk"
} {
  append contents "INSERT INTO t1 VALUES('$num', '$doc');"
}
do_allbackcompat_test {
  if {[code1 {set ::sqlite_options(fts3)}]
   && [code2 {set ::sqlite_options(fts3)}]
  } {

    do_test backcompat-3.1 { sql1 $contents } {}

    foreach {n q} {
      1    "SELECT * FROM t1 ORDER BY a, b"
      2    "SELECT rowid FROM t1 WHERE a MATCH 'five'"
      3    "SELECT * FROM t1 WHERE a MATCH 'five'"
      4    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'jk'"
      5    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'tug* OR eight'"
    } {
      do_test backcompat-3.2 [list sql1 $q] [sql2 $q]
    }

    do_test backcompat-3.3 { sql1 {
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
      INSERT INTO t1 SELECT * FROM t1;
    } } {}

    foreach {n q} {
      1    "SELECT * FROM t1 ORDER BY a, b"
      2    "SELECT rowid FROM t1 WHERE a MATCH 'five'"
      3    "SELECT * FROM t1 WHERE a MATCH 'five'"
      4    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'jk'"
      5    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'tug* OR eight'"
    } {
      do_test backcompat-3.4 [list sql1 $q] [sql2 $q]
    }

    set alphabet "a b c d e f g h i j k l m n o p q r s t u v w x y z 1 2 3 4"
    for {set i 0} {$i < 900} {incr i} {
      set term "[lindex $alphabet [expr $i/30]][lindex $alphabet [expr $i%30]] "
      sql1 "INSERT INTO t1 VALUES($i, '[string repeat $term 14]')"
    }

    foreach {n q} {
      1    "SELECT * FROM t1 ORDER BY a, b"
      2    "SELECT rowid FROM t1 WHERE a MATCH 'five'"
      3    "SELECT * FROM t1 WHERE a MATCH 'five'"
      4    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'jk'"
      5    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'tug* OR eight'"

      6    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'aa'"
      7    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH '44'"
      8    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'a*'"
    } {
      do_test backcompat-3.5 [list sql1 $q] [sql2 $q]
    }

    do_test backcompat-3.6 { 
      sql1 "SELECT optimize(t1) FROM t1 LIMIT 1" 
    } {{Index optimized}}

    foreach {n q} {
      1    "SELECT * FROM t1 ORDER BY a, b"
      2    "SELECT rowid FROM t1 WHERE a MATCH 'five'"
      3    "SELECT * FROM t1 WHERE a MATCH 'five'"
      4    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'jk'"
      5    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'tug* OR eight'"

      6    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'aa'"
      7    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH '44'"
      8    "SELECT offsets(t1) FROM t1 WHERE t1 MATCH 'a*'"
    } {
      do_test backcompat-3.7 [list sql1 $q] [sql2 $q]
    }
  }
}

#-------------------------------------------------------------------------
# Test that Rtree tables may be read/written by different versions of 
# SQLite. 
#
set contents {
  CREATE VIRTUAL TABLE t1 USING rtree(id, x1, x2, y1, y2);
}
foreach {id x1 x2 y1 y2} {
  1    -47.64 43.87    33.86 34.42        2    -21.51 17.32    2.05 31.04
  3    -43.67 -38.33    -19.79 3.43       4    32.41 35.16    9.12 19.82
  5    33.28 34.87    14.78 28.26         6    49.31 116.59    -9.87 75.09
  7    -14.93 34.51    -17.64 64.09       8    -43.05 23.43    -1.19 69.44
  9    44.79 133.56    28.09 80.30        10    -2.66 81.47    -41.38 -10.46
  11    -42.89 -3.54    15.76 71.63       12    -3.50 84.96    -11.64 64.95
  13    -45.69 26.25    11.14 55.06       14    -44.09 11.23    17.52 44.45
  15    36.23 133.49    -19.38 53.67      16    -17.89 81.54    14.64 50.61
  17    -41.97 -24.04    -39.43 28.95     18    -5.85 7.76    -6.38 47.02
  19    18.82 27.10    42.82 100.09       20    39.17 113.45    26.14 73.47
  21    22.31 103.17    49.92 106.05      22    -43.06 40.38    -1.75 76.08
  23    2.43 57.27    -14.19 -3.83        24    -47.57 -4.35    8.93 100.06
  25    -37.47 49.14    -29.11 8.81       26    -7.86 75.72    49.34 107.42
  27    1.53 45.49    20.36 49.74         28    -48.48 32.54    28.81 54.45
  29    2.67 39.77    -4.05 13.67         30    4.11 62.88    -47.44 -5.72
  31    -21.47 51.75    37.25 116.09      32    45.59 111.37    -6.43 43.64
  33    35.23 48.29    23.54 113.33       34    16.61 68.35    -14.69 65.97
  35    13.98 16.60    48.66 102.87       36    19.74 23.84    31.15 77.27
  37    -27.61 24.43    7.96 94.91        38    -34.77 12.05    -22.60 -6.29
  39    -25.83 8.71    -13.48 -12.53      40    -17.11 -1.01    18.06 67.89
  41    14.13 71.72    -3.78 39.25        42    23.75 76.00    -16.30 8.23
  43    -39.15 28.63    38.12 125.88      44    48.62 86.09    36.49 102.95
  45    -31.39 -21.98    2.52 89.78       46    5.65 56.04    15.94 89.10
  47    18.28 95.81    46.46 143.08       48    30.93 102.82    -20.08 37.36
  49    -20.78 -3.48    -5.58 35.46       50    49.85 90.58    -24.48 46.29
} {
if {$x1 >= $x2 || $y1 >= $y2} { error "$x1 $x2 $y1 $y2" }
  append contents "INSERT INTO t1 VALUES($id, $x1, $x2, $y1, $y2);"
}
set queries {
  1    "SELECT id FROM t1 WHERE x1>10 AND x2<44"
  2    "SELECT id FROM t1 WHERE y1<100"
  3    "SELECT id FROM t1 WHERE y1<100 AND x1>0"
  4    "SELECT id FROM t1 WHERE y1>10 AND x1>0 AND x2<50 AND y2<550"
}
do_allbackcompat_test {
  if {[code1 {set ::sqlite_options(fts3)}]
   && [code2 {set ::sqlite_options(fts3)}]
  } {

    do_test backcompat-4.1 { sql1 $contents } {}

    foreach {n q} $::queries {
      do_test backcompat-4.2.$n [list sql1 $q] [sql2 $q]
    }

    do_test backcompat-4.3 { sql1 {
      INSERT INTO t1 SELECT id+100, x1+10.0, x2+10.0, y1-10.0, y2-10.0 FROM t1;
    } } {}

    foreach {n q} $::queries {
      do_test backcompat-4.4.$n [list sql1 $q] [sql2 $q]
    }

    do_test backcompat-4.5 { sql2 {
      INSERT INTO t1 SELECT id+200, x1+20.0, x2+20.0, y1-20.0, y2-20.0 FROM t1;
    } } {}

    foreach {n q} $::queries {
      do_test backcompat-4.6.$n [list sql1 $q] [sql2 $q]
    }

  }
}

finish_test