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

Artifact 23662b7b61958b0f0e47082de7d06341ccf85d5b:


# 2011 April 22
#
# 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.
#
#***********************************************************************
#

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

# Test organization:
#
#   1.*: That file names are correctly extracted from URIs.
#   2.*: That URI options (query parameters) are correctly extracted from URIs.
#   3.*: That specifying an unknown VFS causes an error.
#   4.*: Tests for specifying other options (other than "vfs").
#   5.*: Test using a different VFS with an attached database.
#   6.*: Test that authorities other than "" and localhost cause errors.
#   7.*: Test that a read-write db can be attached to a read-only connection.
#

set testprefix uri
db close
sqlite3_shutdown
sqlite3_config_uri 1

#-------------------------------------------------------------------------
# Test that file names are correctly extracted from URIs.
#
foreach {tn uri file} {
  1      test.db                              test.db
  2      file:test.db                         test.db
  3      file://PWD/test.db                   test.db
  4      file:PWD/test.db                     test.db
  5      file:test.db?mork=1                  test.db
  6      file:test.db?mork=1&tonglor=2        test.db
  7      file:test.db?mork=1#boris            test.db
  8      file:test.db#boris                   test.db
  9      test.db#boris                        test.db#boris
  10     file:test%2Edb                       test.db
  11     file                                 file
  12     http:test.db                         http:test.db
  13     file:test.db%00extra                 test.db
  14     file:testdb%00.db%00extra            testdb

  15     test.db?mork=1#boris                 test.db?mork=1#boris
  16     file://localhostPWD/test.db%3Fhello  test.db?hello
} {
  

  ifcapable !curdir { if {$tn==3} break }

  if {$tcl_platform(platform)=="windows"} {
    #
    # NOTE: Due to limits on legal characters for file names imposed by
    #       Windows, we must skip the final two tests here (i.e. the
    #       question mark is illegal in a file name on Windows).
    #
    if {$tn>14} break

    #
    # NOTE: On Windows, we need to account for the fact that the current
    #       directory does not start with a forward slash.
    #
    set uri  [string map [list PWD/ /[test_pwd /]] $uri]
  } else {
    set uri  [string map [list PWD/ [test_pwd /]] $uri]
  }

  if {[file isdir $file]} {error "$file is a directory"}
  forcedelete $file
  do_test 1.$tn.1 { file exists $file } 0
  set DB [sqlite3_open $uri]
  do_test 1.$tn.2 { file exists $file } 1
  sqlite3_close $DB
  forcedelete $file

  do_test 1.$tn.3 { file exists $file } 0
  sqlite3 db xxx.db
  catchsql { ATTACH $uri AS aux }
  do_test 1.$tn.4 { file exists $file } 1
  db close
}

#-------------------------------------------------------------------------
# Test that URI query parameters are passed through to the VFS layer
# correctly.
#
testvfs tvfs2
testvfs tvfs -default 1
tvfs filter xOpen
tvfs script open_method
proc open_method {method file arglist} {
  set ::arglist $arglist
}
foreach {tn uri kvlist} {
  1      file:test.db?hello=world                     {hello world}
  2      file:test.db?hello&world                     {hello {} world {}}
  3      file:test.db?hello=1&world=2&vfs=tvfs        {hello 1 world 2 vfs tvfs}
  4      file:test.db?hello=1&world=2&vfs=tvfs2        {}
  5      file:test.db?%68%65%6C%6C%6F=%77%6F%72%6C%64 {hello world}
  6      file:testdb%00.db?hello%00extra=world%00ex   {hello world}
  7      file:testdb%00.db?hello%00=world%00          {hello world}
  8      file:testdb%00.db?=world&xyz=abc             {xyz abc}
  9      file:test.db?%00hello=world&xyz=abc          {xyz abc}
  10     file:test.db?hello=%00world&xyz=             {hello {} xyz {}}
  11     file:test.db?=#ravada                        {}
  12     file:test.db?&&&&&&&&hello=world&&&&&&&      {hello world}

  13     test.db?&&&&&&&&hello=world&&&&&&&           {}
  14     http:test.db?hello&world                     {}
} {

  if {$tcl_platform(platform) == "windows" && $tn>12} {
    continue
  }

  set ::arglist ""
  set DB [sqlite3_open $uri]
  do_test 2.$tn.1 { set ::arglist } $kvlist
  sqlite3_close $DB

  sqlite3 db xxx.db
  set ::arglist ""
  execsql { ATTACH $uri AS aux }
  do_test 2.$tn.2 { set ::arglist } $kvlist
  db close
}
tvfs delete
tvfs2 delete

#-------------------------------------------------------------------------
# Test that specifying a non-existent VFS raises an error.
#
do_test 3.1 {
  list [catch { sqlite3 db "file:test.db?vfs=nosuchvfs" } msg] $msg
} {1 {no such vfs: nosuchvfs}}

#-------------------------------------------------------------------------
# Test some of the other options (other than "vfs").
#
foreach {tn mode create_ok write_ok readonly_ok} {
  1    ro    0   0   1
  2    rw    0   1   0
  3    rwc   1   1   0
} {
  catch { db close }
  forcedelete test.db

  set A(1) {0 {}}
  set A(0) {1 {unable to open database file}}
  do_test 4.1.$tn.1 {
    list [catch {sqlite3 db "file:test.db?mode=$mode"} msg] $msg
  } $A($create_ok)

  catch { db close }
  forcedelete test.db
  sqlite3 db test.db
  db eval { CREATE TABLE t1(a, b) }
  db close

  set A(1) {0 {}}
  set A(0) {1 {attempt to write a readonly database}}
  do_test 4.1.$tn.2 {
    sqlite3 db "file:test.db?mode=$mode"
    catchsql { INSERT INTO t1 VALUES(1, 2) }
  } $A($write_ok)

  set A(1) {0 {}}
  set A(0) [list 1 "access mode not allowed: $mode"]
  do_test 4.1.$tn.3 {
    list [catch {sqlite3 db "file:test.db?mode=$mode" -readonly 1} msg] $msg
  } $A($readonly_ok)
}

set orig [sqlite3_enable_shared_cache]
foreach {tn options sc_default is_shared} {
  1    ""                1   1
  2    "cache=private"   1   0
  3    "cache=shared"    1   1
  4    ""                0   0
  5    "cache=private"   0   0
  6    "cache=shared"    0   1
} {
  catch { db close }
  forcedelete test.db

  sqlite3_enable_shared_cache 1
  sqlite3 db2 test.db
  db2 eval {CREATE TABLE t1(a, b)}

  sqlite3_enable_shared_cache $sc_default
  sqlite3 db "file:test.db?$options"
  db eval {SELECT * FROM t1}

  set A(1) {1 {database table is locked: t1}}
  set A(0) {0 {}}
  do_test 4.2.$tn {
    db2 eval {BEGIN; INSERT INTO t1 VALUES(1, 2);}
    catchsql { SELECT * FROM t1 }
  } $A($is_shared)

  db2 close
}

do_test 4.3.1 {
  list [catch {sqlite3 db "file:test.db?mode=rc"} msg] $msg
} {1 {no such access mode: rc}}
do_test 4.3.2 {
  list [catch {sqlite3 db "file:test.db?cache=public"} msg] $msg
} {1 {no such cache mode: public}}

#-------------------------------------------------------------------------
# Test that things work if an ATTACHed database uses a different VFS than
# the main database. The important point is that for all operations 
# involving the ATTACHed database, the correct versions of the following
# VFS are used for all operations involving the attached database.
#
#     xOpen
#     xDelete
#     xAccess
#     xFullPathname
#

# This block of code creates two VFS - "tvfs1" and "tvfs2". Each time one
# of the above methods is called using "tvfs1", global variable ::T1(X) is
# set, where X is the file-name the method is called on. Calls to the above
# methods using "tvfs2" set entries in the global T2 array.
#
ifcapable wal {
  testvfs tvfs1 
  tvfs1 filter {xOpen xDelete xAccess xFullPathname}
  tvfs1 script tvfs1_callback
  proc tvfs1_callback {method filename args} { 
    set ::T1([file tail $filename]) 1 
    return SQLITE_OK
  }
  testvfs tvfs2 
  tvfs2 filter {xOpen xDelete xAccess xFullPathname}
  tvfs2 script tvfs2_callback
  proc tvfs2_callback {method filename args} { 
    set ::T2([file tail $filename]) 1 
    return SQLITE_OK
  }
  
  catch {db close}
  eval forcedelete [glob test.db*]
  do_test 5.1.1 {
    sqlite3 db file:test.db1?vfs=tvfs1
    execsql {
      ATTACH 'file:test.db2?vfs=tvfs2' AS aux;
      PRAGMA main.journal_mode = PERSIST;
      PRAGMA aux.journal_mode = PERSIST;
      CREATE TABLE t1(a, b);
      CREATE TABLE aux.t2(a, b);
      PRAGMA main.journal_mode = WAL;
      PRAGMA aux.journal_mode = WAL;
      INSERT INTO t1 VALUES('x', 'y');
      INSERT INTO t2 VALUES('x', 'y');
    }
    lsort [array names ::T1]
  } {test.db1 test.db1-journal test.db1-wal}
  
  do_test 5.1.2 {
    lsort [array names ::T2]
  } {test.db2 test.db2-journal test.db2-wal}
  db close
  
  tvfs1 delete
  tvfs2 delete
}

#-------------------------------------------------------------------------
# Check that only "" and "localhost" are acceptable as authorities.
#
catch {db close}
foreach {tn uri res} {
  1     "file://localhost/PWD/test.db"   {not an error}
  2     "file:///PWD/test.db"            {not an error}
  3     "file:/PWD/test.db"              {not an error}
  4     "file://l%6Fcalhost/PWD/test.db" {invalid uri authority: l%6Fcalhost}
  5     "file://lbcalhost/PWD/test.db"   {invalid uri authority: lbcalhost}
  6     "file://x/PWD/test.db"           {invalid uri authority: x}
} {

  if {$tcl_platform(platform)=="windows"} {
    set uri  [string map [list PWD [string range [get_pwd] 3 end]] $uri]
  } else {
    set uri  [string map [list PWD [string range [get_pwd] 1 end]] $uri]
  }

  do_test 6.$tn {
    set DB [sqlite3_open $uri]
    sqlite3_errmsg $DB
  } $res
  catch { sqlite3_close $DB }
}

forcedelete test.db test.db2
do_test 7.1 {
  sqlite3 db test.db
  execsql {
    CREATE TABLE t1(a, b);
    INSERT INTO t1 VALUES(1, 2);
    ATTACH 'test.db2' AS aux;
    CREATE TABLE aux.t2(a, b);
    INSERT INTO t1 VALUES('a', 'b');
  }
  db close
} {}
do_test 7.2 {
  sqlite3 db file:test.db?mode=ro
  execsql { ATTACH 'file:test.db2?mode=rw' AS aux }
} {}
do_execsql_test  7.3 { 
  INSERT INTO t2 VALUES('c', 'd') 
} {}
do_catchsql_test 7.4 { 
  INSERT INTO t1 VALUES(3, 4) 
} {1 {attempt to write a readonly database}}

finish_test