sqlite/test/pager.test

# 2001 September 15
#
# 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 script is page cache subsystem.
#
# $Id: pager.test,v 1.10 2001/09/16 00:13:28 drh Exp $


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

if {[info commands pager_open]!=""} {

# Basic sanity check.  Open and close a pager.
#
do_test pager-1.0 {
  catch {file delete -force ptf1.db}
  catch {file delete -force ptf1.db-journal}
  set v [catch {
    set ::p1 [pager_open ptf1.db 10]
  } msg]
} {0}
do_test pager-1.1 {
  pager_stats $::p1
} {ref 0 page 0 max 10 size -1 state 0 err 0 hit 0 miss 0 ovfl 0}
do_test pager-1.2 {
  pager_pagecount $::p1
} {0}
do_test pager-1.3 {
  pager_stats $::p1
} {ref 0 page 0 max 10 size -1 state 0 err 0 hit 0 miss 0 ovfl 0}
do_test pager-1.4 {
  pager_close $::p1
} {}

# Try to write a few pages.
#
do_test pager-2.1 {
  set v [catch {
    set ::p1 [pager_open ptf1.db 10]
  } msg]
} {0}
do_test pager-2.2 {
  set v [catch {
    set ::g1 [page_get $::p1 0]
  } msg]
  lappend v $msg
} {1 SQLITE_ERROR}
do_test pager-2.3.1 {
  set ::gx [page_lookup $::p1 1]
} {}
do_test pager-2.3.2 {
  pager_stats $::p1
} {ref 0 page 0 max 10 size -1 state 0 err 0 hit 0 miss 0 ovfl 0}
do_test pager-2.3.3 {
  set v [catch {
    set ::g1 [page_get $::p1 1]
  } msg]
  if {$v} {lappend v $msg}
  set v
} {0}
do_test pager-2.3.3 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.3.4 {
  set ::gx [page_lookup $::p1 1]
  expr {$::gx!=""}
} {1}
do_test pager-2.3.5 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.3.6 {
  expr $::g1==$::gx
} {1}
do_test pager-2.3.7 {
  page_unref $::gx
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.4 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.5 {
  pager_pagecount $::p1
} {0}
do_test pager-2.6 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.7 {
  page_number $::g1
} {1}
do_test pager-2.8 {
  page_read $::g1
} {}
do_test pager-2.9 {
  page_unref $::g1
} {}
do_test pager-2.10 {
  pager_stats $::p1
} {ref 0 page 0 max 10 size -1 state 0 err 0 hit 0 miss 1 ovfl 0}
do_test pager-2.11 {
  set ::g1 [page_get $::p1 1]
  expr {$::g1!=0}
} {1}
do_test pager-2.12 {
  page_number $::g1
} {1}
do_test pager-2.13 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 0 state 1 err 0 hit 0 miss 2 ovfl 0}
do_test pager-2.14 {
  set v [catch {
    page_write $::g1 "Page-One"
  } msg]
  lappend v $msg
} {0 {}}
do_test pager-2.15 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 1 state 2 err 0 hit 0 miss 2 ovfl 0}
do_test pager-2.16 {
  page_read $::g1
} {Page-One}
do_test pager-2.17 {
  set v [catch {
    pager_commit $::p1
  } msg]
  lappend v $msg
} {0 {}}
do_test pager-2.20 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size -1 state 1 err 0 hit 0 miss 2 ovfl 0}
do_test pager-2.19 {
  pager_pagecount $::p1
} {1}
do_test pager-2.21 {
  pager_stats $::p1
} {ref 1 page 1 max 10 size 1 state 1 err 0 hit 0 miss 2 ovfl 0}
do_test pager-2.22 {
  page_unref $::g1
} {}
do_test pager-2.23 {
  pager_stats $::p1
} {ref 0 page 0 max 10 size -1 state 0 err 0 hit 0 miss 2 ovfl 0}
do_test pager-2.24 {
  set v [catch {
    page_get $::p1 1
  } ::g1]
  if {$v} {lappend v $::g1}
  set v
} {0}
do_test pager-2.25 {
  page_read $::g1
} {Page-One}
do_test pager-2.26 {
  set v [catch {
    page_write $::g1 {page-one}
  } msg]
  lappend v $msg
} {0 {}}
do_test pager-2.27 {
  page_read $::g1
} {page-one}
do_test pager-2.28 {
  set v [catch {
    pager_rollback $::p1
  } msg]
  lappend v $msg
} {0 {}}
do_test pager-2.29 {
  page_read $::g1
} {Page-One}
do_test pager-2.99 {
  pager_close $::p1
} {}

do_test pager-3.1 {
  set v [catch {
    set ::p1 [pager_open ptf1.db 15]
  } msg]
  if {$v} {lappend v $msg}
  set v
} {0}
do_test pager-3.2 {
  pager_pagecount $::p1
} {1}
do_test pager-3.3 {
  set v [catch {
    set ::g(1) [page_get $::p1 1]
  } msg]
  if {$v} {lappend v $msg}
  set v
} {0}
do_test pager-3.4 {
  page_read $::g(1)
} {Page-One}
do_test pager-3.5 {
  for {set i 2} {$i<=20} {incr i} {
    set gx [page_get $::p1 $i]
    page_write $gx "Page-$i"
    page_unref $gx
  }
  pager_commit $::p1
} {}
for {set i 2} {$i<=20} {incr i} {
  do_test pager-3.6.[expr {$i-1}] [subst {
    set gx \[page_get $::p1 $i\]
    set v \[page_read \$gx\]
    page_unref \$gx
    set v
  }] "Page-$i"
}
for {set i 1} {$i<=20} {incr i} {
  regsub -all CNT {
    set ::g1 [page_get $::p1 CNT]
    set ::g2 [page_get $::p1 CNT]
    set ::vx [page_read $::g2]
    expr {$::g1==$::g2}
  } $i body;
  do_test pager-3.7.$i.1 $body {1}
  regsub -all CNT {
    page_unref $::g2
    set vy [page_read $::g1]
    expr {$vy==$::vx}
  } $i body;
  do_test pager-3.7.$i.2 $body {1}
  regsub -all CNT {
    page_unref $::g1
    set gx [page_get $::p1 CNT]
    set vy [page_read $gx]
    page_unref $gx
    expr {$vy==$::vx}
  } $i body;
  do_test pager-3.7.$i.3 $body {1}
}
do_test pager-3.99 {
  pager_close $::p1
} {}


} ;# end if( not mem: and has pager_open command );

finish_test