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# 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.
#
#***********************************************************************
#
# TESTRUNNER: slow

source [file join [file dirname [info script]] rbu_common.tcl]
if_no_rbu_support { finish_test ; return }
set ::testprefix rbutemplimit

db close

proc setup_databases {} {
  forcedelete test.db2
  forcedelete test.db
  sqlite3 db test.db
  execsql {
    -- Create target database schema.
    --
    CREATE TABLE t1(a INTEGER PRIMARY KEY, b BLOB(100), c BLOB(100));
    CREATE TABLE t2(a INTEGER PRIMARY KEY, b BLOB(100), c BLOB(100));
    CREATE INDEX i1b ON t1(b);
    CREATE INDEX i1c ON t1(c);
    CREATE INDEX i2b ON t2(b);
    CREATE INDEX i2c ON t2(c);
  
    -- Create a large RBU database.
    --
    ATTACH 'test.db2' AS rbu;
    CREATE TABLE rbu.data_t1(a, b, c, rbu_control);
    WITH s(i) AS (
      VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<10000
    )
    INSERT INTO data_t1 SELECT i, randomblob(100), randomblob(100), 0 FROM s;
    CREATE TABLE rbu.data_t2(a, b, c, rbu_control);
    WITH s(i) AS (
      VALUES(1) UNION ALL SELECT i+1 FROM s WHERE i<15000
    )
    INSERT INTO data_t2 SELECT i, randomblob(100), randomblob(100), 0 FROM s;
  }
  db close
}

proc run_rbu_cachesize {target rbu cachesize temp_limit} {
  sqlite3rbu rbu $target $rbu
  rbu temp_size_limit $temp_limit
  sqlite3_exec_nr [rbu db 1] "PRAGMA cache_size = $cachesize"
  while 1 {
    set rc [rbu step]
    set ::A([rbu temp_size]) 1
    if {$rc!="SQLITE_OK"} break
  }
  list [catch {rbu close} msg] $msg
}

proc step_rbu_cachesize {target rbu stepsize cachesize temp_limit} {
  set res ""
  while 1 {
    sqlite3rbu rbu $target $rbu
    rbu temp_size_limit $temp_limit
    if { [rbu temp_size_limit -1]!=$temp_limit } { error "round trip problem!" }
    sqlite3_exec_nr [rbu db 1] "PRAGMA cache_size = $cachesize"
    for {set i 0} {$i < $stepsize} {incr i} {
      set rc [rbu step]
      set ::A([rbu temp_size]) 1
      if {$rc!="SQLITE_OK"} break
    }
    set res [list [catch {rbu close} msg] $msg]
    if {$res != "0 SQLITE_OK"} break
  }
  set res
}

do_test 1.1.0 { setup_databases } {}

do_test 1.1.1 {
  unset -nocomplain ::A
  run_rbu_cachesize test.db test.db2 10 0
} {0 SQLITE_DONE}

do_test 1.1.2 { llength [array names ::A] } 3

do_test 1.1.3 { 
  foreach {a0 a1 a2} [lsort -integer [array names ::A]] {}
  list [expr $a0==0]                         \
       [expr $a1>1048576] [expr $a1<1200000] \
       [expr $a2>1500000] [expr $a2<1700000]
} {1 1 1 1 1}

do_test 1.2.1 {
  setup_databases
  run_rbu_cachesize test.db test.db2 10 1000000
} {1 SQLITE_FULL}
do_test 1.2.2 { info commands rbu } {}

do_test 1.3.1 {
  setup_databases
  run_rbu_cachesize test.db test.db2 10 1300000
} {1 SQLITE_FULL}
do_test 1.3.2 { info commands rbu } {}

do_test 1.4.1 {
  setup_databases
  run_rbu_cachesize test.db test.db2 10 1800000
} {0 SQLITE_DONE}
do_test 1.4.2 { info commands rbu } {}

do_test 1.5.1 {
  setup_databases
  unset -nocomplain ::A
  step_rbu_cachesize test.db test.db2 1000 10 2400000
} {0 SQLITE_DONE}
do_test 1.5.2 { info commands rbu } {}

do_test 1.6.1 {
  setup_databases
  unset -nocomplain ::A
  step_rbu_cachesize test.db test.db2 1000 10 1400000
} {1 SQLITE_FULL}
do_test 1.6.2 { info commands rbu } {}

finish_test