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

Artifact 159419073d9769fdb1780ed7e5b391a046f898d5:


# 2009 February 4
#
# 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 "backup" and "restore" methods
# of the TCL interface - methods which are based on the
# sqlite3_backup_XXX API.
#
# $Id: backup2.test,v 1.4 2009/04/07 14:14:23 danielk1977 Exp $

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

ifcapable !trigger||!view { finish_test ; return }

# Fill a database with test data.
#
do_test backup2-1 {
  db eval {
    CREATE TABLE t1(x);
    INSERT INTO t1 VALUES(randstr(8000,8000));
    INSERT INTO t1 VALUES(randstr(8000,8000));
    INSERT INTO t1 VALUES(randstr(8000,8000));
    INSERT INTO t1 VALUES(randstr(8000,8000));
    INSERT INTO t1 VALUES(randstr(8000,8000));
    CREATE VIEW v1 AS SELECT substr(x,10,10) FROM t1;
    CREATE TABLE t2(a,b);
    INSERT INTO t2 VALUES(1,2);
    INSERT INTO t2 VALUES(2,4);
    INSERT INTO t2 SELECT a+2, (a+2)*2 FROM t2;
    INSERT INTO t2 SELECT a+4, (a+4)*2 FROM t2;
    INSERT INTO t2 SELECT a+8, (a+8)*2 FROM t2;
    INSERT INTO t2 SELECT a+16, (a+16)*2 FROM t2;
    INSERT INTO t2 SELECT a+32, (a+32)*2 FROM t2;
    INSERT INTO t2 SELECT a+64, (a+64)*2 FROM t2;
    INSERT INTO t2 SELECT a+128, (a+128)*2 FROM t2;
    CREATE INDEX t2i1 ON t2(a,b);
    CREATE TRIGGER r1 AFTER INSERT ON t2 BEGIN
      SELECT 'hello';
    END;
    ANALYZE;
    PRAGMA integrity_check;
  }
} {ok}

# Remember a check-sum on the database file.
#
unset -nocomplain cksum
set cksum [dbcksum db main]

# Make a backup of the test data.  Verify that the backup copy
# is identical to the original.
#
do_test backup2-2 {
  file delete -force bu1.db
  db backup bu1.db
  sqlite3 db2 bu1.db
  dbcksum db2 main
} $cksum

# Delete the original.  Restore from backup.  Verify the content is
# unchanged.
#
do_test backup2-3.1 {
  db close
  file delete -force test.db test.db-journal
  sqlite3 db test.db
  db2 eval {BEGIN EXCLUSIVE}
  set rc [catch {db restore bu1.db} res]
  lappend rc $res
  db2 eval {ROLLBACK}
  set rc
} {1 {restore failed: source database busy}}
do_test backup2-3.2 {
  db close
  file delete -force test.db test.db-journal
  sqlite3 db test.db
  db restore bu1.db
  dbcksum db main
} $cksum

# Use alternative databases - other than "main".
#
do_test backup2-4 {
  db restore temp bu1.db
  dbcksum db temp
} $cksum
do_test backup2-5 {
  db2 close
  file delete -force bu1.db bu2.db
  db backup temp bu2.db
  sqlite3 db2 bu2.db
  dbcksum db2 main
} $cksum

# Try to backup to a readonly file.
#
do_test backup2-6 {
  db2 close
  catch {file attributes bu2.db -permissions r--------}
  catch {file attributes bu2.db -readonly 1}
  set rc [catch {db backup temp bu2.db} res]
  lappend rc $res
} {1 {backup failed: attempt to write a readonly database}}

# Try to backup to something that is not a database file.
#
do_test backup2-7 {
  catch {file attributes bu2.db -readonly 0}
  catch {file attributes bu2.db -permissions rw-------}
  set out [open bu2.db w]
  puts $out "This is not a valid database file"
  close $out
  set rc [catch {db backup temp bu2.db} res]
  lappend rc $res
} {1 {backup failed: file is encrypted or is not a database}}

# Try to backup database that does not exist
#
do_test backup2-8 {
  file delete -force bu1.db
  set rc [catch {db backup aux1 bu1.db} res]
  lappend rc $res
} {1 {backup failed: unknown database aux1}}

# Invalid syntax on the backup method
#
do_test backup2-9 {
  set rc [catch {db backup} res]
  lappend rc $res
} {1 {wrong # args: should be "db backup ?DATABASE? FILENAME"}}

# Try to restore from an unreadable file.
#
if {$tcl_platform(platform)=="windows"} {
  do_test backup2-10 {
    file delete -force bu3.db
    file mkdir bu3.db
    set rc [catch {db restore temp bu3.db} res]
    lappend rc $res
  } {1 {cannot open source database: unable to open database file}}
}
if {$tcl_platform(platform)!="windows"} {
  do_test backup2-10 {
    file delete -force bu3.db
    file mkdir bu3.db
    set rc [catch {db restore temp bu3.db} res]
    lappend rc $res
  } {1 {cannot open source database: disk I/O error}}
}

# Try to restore from something that is not a database file.
#
do_test backup2-11 {
  set rc [catch {db restore temp bu2.db} res]
  lappend rc $res
} {1 {restore failed: file is encrypted or is not a database}}

# Try to restore a database that does not exist
#
do_test backup2-12 {
  set rc [catch {db restore aux1 bu2.db} res]
  lappend rc $res
} {1 {restore failed: unknown database aux1}}
do_test backup2-13 {
  file delete -force bu4.db
  set rc [catch {db restore bu4.db} res]
  lappend rc $res
} {1 {cannot open source database: unable to open database file}}

# Invalid syntax on the restore method
#
do_test backup2-14 {
  set rc [catch {db restore} res]
  lappend rc $res
} {1 {wrong # args: should be "db restore ?DATABASE? FILENAME"}}
 
file delete -force bu1.db bu2.db bu3.db bu4.db

finish_test