os/persistentdata/persistentstorage/sqlite3api/TEST/TclScript/enc2.test
changeset 0 bde4ae8d615e
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/persistentdata/persistentstorage/sqlite3api/TEST/TclScript/enc2.test	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,555 @@
     1.4 +# 2002 May 24
     1.5 +#
     1.6 +# The author disclaims copyright to this source code.  In place of
     1.7 +# a legal notice, here is a blessing:
     1.8 +#
     1.9 +#    May you do good and not evil.
    1.10 +#    May you find forgiveness for yourself and forgive others.
    1.11 +#    May you share freely, never taking more than you give.
    1.12 +#
    1.13 +#***********************************************************************
    1.14 +# This file implements regression tests for SQLite library.  The focus of
    1.15 +# this file is testing the SQLite routines used for converting between the
    1.16 +# various suported unicode encodings (UTF-8, UTF-16, UTF-16le and
    1.17 +# UTF-16be).
    1.18 +#
    1.19 +# $Id: enc2.test,v 1.29 2007/10/09 08:29:32 danielk1977 Exp $
    1.20 +
    1.21 +set testdir [file dirname $argv0]
    1.22 +source $testdir/tester.tcl
    1.23 +
    1.24 +# If UTF16 support is disabled, ignore the tests in this file
    1.25 +#
    1.26 +ifcapable {!utf16} {
    1.27 +  finish_test
    1.28 +  return
    1.29 +}
    1.30 +
    1.31 +# The rough organisation of tests in this file is:
    1.32 +#
    1.33 +# enc2.1.*: Simple tests with a UTF-8 db.
    1.34 +# enc2.2.*: Simple tests with a UTF-16LE db.
    1.35 +# enc2.3.*: Simple tests with a UTF-16BE db.
    1.36 +# enc2.4.*: Test that attached databases must have the same text encoding
    1.37 +#           as the main database.
    1.38 +# enc2.5.*: Test the behaviour of the library when a collation sequence is
    1.39 +#           not available for the most desirable text encoding.
    1.40 +# enc2.6.*: Similar test for user functions.
    1.41 +# enc2.7.*: Test that the VerifyCookie opcode protects against assuming the
    1.42 +#           wrong text encoding for the database.
    1.43 +# enc2.8.*: Test sqlite3_complete16()
    1.44 +#
    1.45 +
    1.46 +db close
    1.47 +
    1.48 +# Return the UTF-8 representation of the supplied UTF-16 string $str. 
    1.49 +proc utf8 {str} {
    1.50 +  # If $str ends in two 0x00 0x00 bytes, knock these off before
    1.51 +  # converting to UTF-8 using TCL.
    1.52 +  binary scan $str \c* vals
    1.53 +  if {[lindex $vals end]==0 && [lindex $vals end-1]==0} {
    1.54 +    set str [binary format \c* [lrange $vals 0 end-2]]
    1.55 +  }
    1.56 +
    1.57 +  set r [encoding convertfrom unicode $str]
    1.58 +  return $r
    1.59 +}
    1.60 +
    1.61 +#
    1.62 +# This proc contains all the tests in this file. It is run
    1.63 +# three times. Each time the file 'test.db' contains a database
    1.64 +# with the following contents:
    1.65 +set dbcontents {
    1.66 +  CREATE TABLE t1(a PRIMARY KEY, b, c);
    1.67 +  INSERT INTO t1 VALUES('one', 'I', 1);
    1.68 +}
    1.69 +# This proc tests that we can open and manipulate the test.db 
    1.70 +# database, and that it is possible to retreive values in
    1.71 +# various text encodings.
    1.72 +#
    1.73 +proc run_test_script {t enc} {
    1.74 +
    1.75 +# Open the database and pull out a (the) row.
    1.76 +do_test $t.1 {
    1.77 +  sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
    1.78 +  execsql {SELECT * FROM t1}
    1.79 +} {one I 1}
    1.80 +
    1.81 +# Insert some data
    1.82 +do_test $t.2 {
    1.83 +  execsql {INSERT INTO t1 VALUES('two', 'II', 2);}
    1.84 +  execsql {SELECT * FROM t1}
    1.85 +} {one I 1 two II 2}
    1.86 +
    1.87 +# Insert some data 
    1.88 +do_test $t.3 {
    1.89 +  execsql {
    1.90 +    INSERT INTO t1 VALUES('three','III',3);
    1.91 +    INSERT INTO t1 VALUES('four','IV',4);
    1.92 +    INSERT INTO t1 VALUES('five','V',5);
    1.93 +  }
    1.94 +  execsql {SELECT * FROM t1}
    1.95 +} {one I 1 two II 2 three III 3 four IV 4 five V 5}
    1.96 +
    1.97 +# Use the index
    1.98 +do_test $t.4 {
    1.99 +  execsql {
   1.100 +    SELECT * FROM t1 WHERE a = 'one';
   1.101 +  }
   1.102 +} {one I 1}
   1.103 +do_test $t.5 {
   1.104 +  execsql {
   1.105 +    SELECT * FROM t1 WHERE a = 'four';
   1.106 +  }
   1.107 +} {four IV 4}
   1.108 +ifcapable subquery {
   1.109 +  do_test $t.6 {
   1.110 +    execsql {
   1.111 +      SELECT * FROM t1 WHERE a IN ('one', 'two');
   1.112 +    }
   1.113 +  } {one I 1 two II 2}
   1.114 +}
   1.115 +
   1.116 +# Now check that we can retrieve data in both UTF-16 and UTF-8
   1.117 +do_test $t.7 {
   1.118 +  set STMT [sqlite3_prepare $DB "SELECT a FROM t1 WHERE c>3;" -1 TAIL]
   1.119 +  sqlite3_step $STMT
   1.120 +  sqlite3_column_text $STMT 0
   1.121 +} {four}
   1.122 +
   1.123 +do_test $t.8 {
   1.124 +  sqlite3_step $STMT
   1.125 +  utf8 [sqlite3_column_text16 $STMT 0]
   1.126 +} {five}
   1.127 +
   1.128 +do_test $t.9 {
   1.129 +  sqlite3_finalize $STMT
   1.130 +} SQLITE_OK
   1.131 +
   1.132 +ifcapable vacuum {
   1.133 +  execsql VACUUM
   1.134 +}
   1.135 +
   1.136 +do_test $t.10 {
   1.137 +  db eval {PRAGMA encoding}
   1.138 +} $enc
   1.139 +
   1.140 +}
   1.141 +
   1.142 +# The three unicode encodings understood by SQLite.
   1.143 +set encodings [list UTF-8 UTF-16le UTF-16be]
   1.144 +
   1.145 +set sqlite_os_trace 0
   1.146 +set i 1
   1.147 +foreach enc $encodings {
   1.148 +  file delete -force test.db
   1.149 +  sqlite3 db test.db
   1.150 +  db eval "PRAGMA encoding = \"$enc\""
   1.151 +  execsql $dbcontents
   1.152 +  do_test enc2-$i.0.1 {
   1.153 +    db eval {PRAGMA encoding}
   1.154 +  } $enc
   1.155 +  do_test enc2-$i.0.2 {
   1.156 +    db eval {PRAGMA encoding=UTF8}
   1.157 +    db eval {PRAGMA encoding}
   1.158 +  } $enc
   1.159 +  do_test enc2-$i.0.3 {
   1.160 +    db eval {PRAGMA encoding=UTF16le}
   1.161 +    db eval {PRAGMA encoding}
   1.162 +  } $enc
   1.163 +  do_test enc2-$i.0.4 {
   1.164 +    db eval {PRAGMA encoding=UTF16be}
   1.165 +    db eval {PRAGMA encoding}
   1.166 +  } $enc
   1.167 +
   1.168 +  db close
   1.169 +  run_test_script enc2-$i $enc
   1.170 +  db close
   1.171 +  incr i
   1.172 +}
   1.173 +
   1.174 +# Test that it is an error to try to attach a database with a different
   1.175 +# encoding to the main database.
   1.176 +ifcapable attach {
   1.177 +  do_test enc2-4.1 {
   1.178 +    file delete -force test.db
   1.179 +    sqlite3 db test.db
   1.180 +    db eval "PRAGMA encoding = 'UTF-8'"
   1.181 +    db eval "CREATE TABLE abc(a, b, c);"
   1.182 +  } {}
   1.183 +  do_test enc2-4.2 {
   1.184 +    file delete -force test2.db
   1.185 +    sqlite3 db2 test2.db
   1.186 +    db2 eval "PRAGMA encoding = 'UTF-16'"
   1.187 +    db2 eval "CREATE TABLE abc(a, b, c);"
   1.188 +  } {}
   1.189 +  do_test enc2-4.3 {
   1.190 +    catchsql {
   1.191 +      ATTACH 'test2.db' as aux;
   1.192 +    }
   1.193 +  } {1 {attached databases must use the same text encoding as main database}}
   1.194 +  db2 close
   1.195 +  db close
   1.196 +}
   1.197 +
   1.198 +# The following tests - enc2-5.* - test that SQLite selects the correct
   1.199 +# collation sequence when more than one is available.
   1.200 +
   1.201 +set ::values [list one two three four five]
   1.202 +set ::test_collate_enc INVALID
   1.203 +proc test_collate {enc lhs rhs} {
   1.204 +  set ::test_collate_enc $enc
   1.205 +  set l [lsearch -exact $::values $lhs]
   1.206 +  set r [lsearch -exact $::values $rhs]
   1.207 +  set res [expr $l - $r]
   1.208 +  # puts "enc=$enc lhs=$lhs/$l rhs=$rhs/$r res=$res"
   1.209 +  return $res
   1.210 +}
   1.211 +
   1.212 +file delete -force test.db
   1.213 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.214 +do_test enc2-5.0 {
   1.215 +  execsql {
   1.216 +    CREATE TABLE t5(a);
   1.217 +    INSERT INTO t5 VALUES('one');
   1.218 +    INSERT INTO t5 VALUES('two');
   1.219 +    INSERT INTO t5 VALUES('five');
   1.220 +    INSERT INTO t5 VALUES('three');
   1.221 +    INSERT INTO t5 VALUES('four');
   1.222 +  }
   1.223 +} {}
   1.224 +do_test enc2-5.1 {
   1.225 +  add_test_collate $DB 1 1 1
   1.226 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate;}]
   1.227 +  lappend res $::test_collate_enc
   1.228 +} {one two three four five UTF-8}
   1.229 +do_test enc2-5.2 {
   1.230 +  add_test_collate $DB 0 1 0
   1.231 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.232 +  lappend res $::test_collate_enc
   1.233 +} {one two three four five UTF-16LE}
   1.234 +do_test enc2-5.3 {
   1.235 +  add_test_collate $DB 0 0 1
   1.236 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.237 +  lappend res $::test_collate_enc
   1.238 +} {one two three four five UTF-16BE}
   1.239 +
   1.240 +db close
   1.241 +file delete -force test.db
   1.242 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.243 +execsql {pragma encoding = 'UTF-16LE'}
   1.244 +do_test enc2-5.4 {
   1.245 +  execsql {
   1.246 +    CREATE TABLE t5(a);
   1.247 +    INSERT INTO t5 VALUES('one');
   1.248 +    INSERT INTO t5 VALUES('two');
   1.249 +    INSERT INTO t5 VALUES('five');
   1.250 +    INSERT INTO t5 VALUES('three');
   1.251 +    INSERT INTO t5 VALUES('four');
   1.252 +  }
   1.253 +} {}
   1.254 +do_test enc2-5.5 {
   1.255 +  add_test_collate $DB 1 1 1
   1.256 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.257 +  lappend res $::test_collate_enc
   1.258 +} {one two three four five UTF-16LE}
   1.259 +do_test enc2-5.6 {
   1.260 +  add_test_collate $DB 1 0 1
   1.261 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.262 +  lappend res $::test_collate_enc
   1.263 +} {one two three four five UTF-16BE}
   1.264 +do_test enc2-5.7 {
   1.265 +  add_test_collate $DB 1 0 0
   1.266 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.267 +  lappend res $::test_collate_enc
   1.268 +} {one two three four five UTF-8}
   1.269 +
   1.270 +db close
   1.271 +file delete -force test.db
   1.272 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.273 +execsql {pragma encoding = 'UTF-16BE'}
   1.274 +do_test enc2-5.8 {
   1.275 +  execsql {
   1.276 +    CREATE TABLE t5(a);
   1.277 +    INSERT INTO t5 VALUES('one');
   1.278 +    INSERT INTO t5 VALUES('two');
   1.279 +    INSERT INTO t5 VALUES('five');
   1.280 +    INSERT INTO t5 VALUES('three');
   1.281 +    INSERT INTO t5 VALUES('four');
   1.282 +  }
   1.283 +} {}
   1.284 +do_test enc2-5.9 {
   1.285 +  add_test_collate $DB 1 1 1
   1.286 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.287 +  lappend res $::test_collate_enc
   1.288 +} {one two three four five UTF-16BE}
   1.289 +do_test enc2-5.10 {
   1.290 +  add_test_collate $DB 1 1 0
   1.291 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.292 +  lappend res $::test_collate_enc
   1.293 +} {one two three four five UTF-16LE}
   1.294 +do_test enc2-5.11 {
   1.295 +  add_test_collate $DB 1 0 0
   1.296 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate}]
   1.297 +  lappend res $::test_collate_enc
   1.298 +} {one two three four five UTF-8}
   1.299 +
   1.300 +# Also test that a UTF-16 collation factory works.
   1.301 +do_test enc2-5-12 {
   1.302 +  add_test_collate $DB 0 0 0
   1.303 +  catchsql {
   1.304 +    SELECT * FROM t5 ORDER BY 1 COLLATE test_collate
   1.305 +  }
   1.306 +} {1 {no such collation sequence: test_collate}}
   1.307 +do_test enc2-5.13 {
   1.308 +  add_test_collate_needed $DB 
   1.309 +  set res [execsql {SELECT * FROM t5 ORDER BY 1 COLLATE test_collate; }]
   1.310 +  lappend res $::test_collate_enc
   1.311 +} {one two three four five UTF-16BE}
   1.312 +do_test enc2-5.14 {
   1.313 +  set ::sqlite_last_needed_collation
   1.314 +} test_collate
   1.315 +
   1.316 +db close
   1.317 +file delete -force test.db
   1.318 +
   1.319 +do_test enc2-5.15 {
   1.320 +  sqlite3 db test.db; set ::DB [sqlite3_connection_pointer db]
   1.321 +  add_test_collate_needed $::DB
   1.322 +  set ::sqlite_last_needed_collation
   1.323 +} {}
   1.324 +do_test enc2-5.16 {
   1.325 +  execsql {CREATE TABLE t1(a varchar collate test_collate);}
   1.326 +} {}
   1.327 +do_test enc2-5.17 {
   1.328 +  set ::sqlite_last_needed_collation
   1.329 +} {test_collate}
   1.330 +
   1.331 +# The following tests - enc2-6.* - test that SQLite selects the correct
   1.332 +# user function when more than one is available.
   1.333 +
   1.334 +proc test_function {enc arg} {
   1.335 +  return "$enc $arg"
   1.336 +}
   1.337 +
   1.338 +db close
   1.339 +file delete -force test.db
   1.340 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.341 +execsql {pragma encoding = 'UTF-8'}
   1.342 +do_test enc2-6.0 {
   1.343 +  execsql {
   1.344 +    CREATE TABLE t5(a);
   1.345 +    INSERT INTO t5 VALUES('one');
   1.346 +  }
   1.347 +} {}
   1.348 +do_test enc2-6.1 {
   1.349 +  add_test_function $DB 1 1 1
   1.350 +  execsql {
   1.351 +    SELECT test_function('sqlite')
   1.352 +  }
   1.353 +} {{UTF-8 sqlite}}
   1.354 +db close
   1.355 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.356 +do_test enc2-6.2 {
   1.357 +  add_test_function $DB 0 1 0
   1.358 +  execsql {
   1.359 +    SELECT test_function('sqlite')
   1.360 +  }
   1.361 +} {{UTF-16LE sqlite}}
   1.362 +db close
   1.363 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.364 +do_test enc2-6.3 {
   1.365 +  add_test_function $DB 0 0 1
   1.366 +  execsql {
   1.367 +    SELECT test_function('sqlite')
   1.368 +  }
   1.369 +} {{UTF-16BE sqlite}}
   1.370 +
   1.371 +db close
   1.372 +file delete -force test.db
   1.373 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.374 +execsql {pragma encoding = 'UTF-16LE'}
   1.375 +do_test enc2-6.3 {
   1.376 +  execsql {
   1.377 +    CREATE TABLE t5(a);
   1.378 +    INSERT INTO t5 VALUES('sqlite');
   1.379 +  }
   1.380 +} {}
   1.381 +do_test enc2-6.4 {
   1.382 +  add_test_function $DB 1 1 1
   1.383 +  execsql {
   1.384 +    SELECT test_function('sqlite')
   1.385 +  }
   1.386 +} {{UTF-16LE sqlite}}
   1.387 +db close
   1.388 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.389 +do_test enc2-6.5 {
   1.390 +  add_test_function $DB 0 1 0
   1.391 +  execsql {
   1.392 +    SELECT test_function('sqlite')
   1.393 +  }
   1.394 +} {{UTF-16LE sqlite}}
   1.395 +db close
   1.396 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.397 +do_test enc2-6.6 {
   1.398 +  add_test_function $DB 0 0 1
   1.399 +  execsql {
   1.400 +    SELECT test_function('sqlite')
   1.401 +  }
   1.402 +} {{UTF-16BE sqlite}}
   1.403 +
   1.404 +db close
   1.405 +file delete -force test.db
   1.406 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.407 +execsql {pragma encoding = 'UTF-16BE'}
   1.408 +do_test enc2-6.7 {
   1.409 +  execsql {
   1.410 +    CREATE TABLE t5(a);
   1.411 +    INSERT INTO t5 VALUES('sqlite');
   1.412 +  }
   1.413 +} {}
   1.414 +do_test enc2-6.8 {
   1.415 +  add_test_function $DB 1 1 1
   1.416 +  execsql {
   1.417 +    SELECT test_function('sqlite')
   1.418 +  }
   1.419 +} {{UTF-16BE sqlite}}
   1.420 +db close
   1.421 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.422 +do_test enc2-6.9 {
   1.423 +  add_test_function $DB 0 1 0
   1.424 +  execsql {
   1.425 +    SELECT test_function('sqlite')
   1.426 +  }
   1.427 +} {{UTF-16LE sqlite}}
   1.428 +db close
   1.429 +sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
   1.430 +do_test enc2-6.10 {
   1.431 +  add_test_function $DB 0 0 1
   1.432 +  execsql {
   1.433 +    SELECT test_function('sqlite')
   1.434 +  }
   1.435 +} {{UTF-16BE sqlite}}
   1.436 +
   1.437 +
   1.438 +db close
   1.439 +file delete -force test.db
   1.440 +
   1.441 +# The following tests - enc2-7.* - function as follows:
   1.442 +#
   1.443 +# 1: Open an empty database file assuming UTF-16 encoding.
   1.444 +# 2: Open the same database with a different handle assuming UTF-8. Create
   1.445 +#    a table using this handle.
   1.446 +# 3: Read the sqlite_master table from the first handle. 
   1.447 +# 4: Ensure the first handle recognises the database encoding is UTF-8.
   1.448 +#
   1.449 +do_test enc2-7.1 {
   1.450 +  sqlite3 db test.db
   1.451 +  execsql {
   1.452 +    PRAGMA encoding = 'UTF-16';
   1.453 +    SELECT * FROM sqlite_master;
   1.454 +  }
   1.455 +} {}
   1.456 +do_test enc2-7.2 {
   1.457 +  set enc [execsql {
   1.458 +    PRAGMA encoding;
   1.459 +  }]
   1.460 +  string range $enc 0 end-2 ;# Chop off the "le" or "be"
   1.461 +} {UTF-16}
   1.462 +do_test enc2-7.3 {
   1.463 +  sqlite3 db2 test.db
   1.464 +  execsql {
   1.465 +    PRAGMA encoding = 'UTF-8';
   1.466 +    CREATE TABLE abc(a, b, c);
   1.467 +  } db2
   1.468 +} {}
   1.469 +do_test enc2-7.4 {
   1.470 +  execsql {
   1.471 +    SELECT * FROM sqlite_master;
   1.472 +  }
   1.473 +} "table abc abc [expr $AUTOVACUUM?3:2] {CREATE TABLE abc(a, b, c)}"
   1.474 +do_test enc2-7.5 {
   1.475 +  execsql {
   1.476 +    PRAGMA encoding;
   1.477 +  }
   1.478 +} {UTF-8}
   1.479 +
   1.480 +db close
   1.481 +db2 close
   1.482 +
   1.483 +proc utf16 {utf8} {
   1.484 +  set utf16 [encoding convertto unicode $utf8]
   1.485 +  append utf16 "\x00\x00"
   1.486 +  return $utf16
   1.487 +}
   1.488 +ifcapable {complete} {
   1.489 +  do_test enc2-8.1 {
   1.490 +    sqlite3_complete16 [utf16 "SELECT * FROM t1;"]
   1.491 +  } {1}
   1.492 +  do_test enc2-8.2 {
   1.493 +    sqlite3_complete16 [utf16 "SELECT * FROM"]
   1.494 +  } {0}
   1.495 +}
   1.496 +
   1.497 +# Test that the encoding of an empty database may still be set after the
   1.498 +# (empty) schema has been initialized.
   1.499 +file delete -force test.db
   1.500 +do_test enc2-9.1 {
   1.501 +  sqlite3 db test.db
   1.502 +  execsql {
   1.503 +    PRAGMA encoding = 'UTF-8';
   1.504 +    PRAGMA encoding;
   1.505 +  }
   1.506 +} {UTF-8}
   1.507 +do_test enc2-9.2 {
   1.508 +  sqlite3 db test.db
   1.509 +  execsql {
   1.510 +    PRAGMA encoding = 'UTF-16le';
   1.511 +    PRAGMA encoding;
   1.512 +  }
   1.513 +} {UTF-16le}
   1.514 +do_test enc2-9.3 {
   1.515 +  sqlite3 db test.db
   1.516 +  execsql {
   1.517 +    SELECT * FROM sqlite_master;
   1.518 +    PRAGMA encoding = 'UTF-8';
   1.519 +    PRAGMA encoding;
   1.520 +  }
   1.521 +} {UTF-8}
   1.522 +do_test enc2-9.4 {
   1.523 +  sqlite3 db test.db
   1.524 +  execsql {
   1.525 +    PRAGMA encoding = 'UTF-16le';
   1.526 +    CREATE TABLE abc(a, b, c);
   1.527 +    PRAGMA encoding;
   1.528 +  }
   1.529 +} {UTF-16le}
   1.530 +do_test enc2-9.5 {
   1.531 +  sqlite3 db test.db
   1.532 +  execsql {
   1.533 +    PRAGMA encoding = 'UTF-8';
   1.534 +    PRAGMA encoding;
   1.535 +  }
   1.536 +} {UTF-16le}
   1.537 +
   1.538 +# Ticket #1987.
   1.539 +# Disallow encoding changes once the encoding has been set.
   1.540 +#
   1.541 +do_test enc2-10.1 {
   1.542 +  db close
   1.543 +  file delete -force test.db test.db-journal
   1.544 +  sqlite3 db test.db
   1.545 +  db eval {
   1.546 +    PRAGMA encoding=UTF16;
   1.547 +    CREATE TABLE t1(a);
   1.548 +    PRAGMA encoding=UTF8;
   1.549 +    CREATE TABLE t2(b);
   1.550 +  }
   1.551 +  db close
   1.552 +  sqlite3 db test.db
   1.553 +  db eval {
   1.554 +    SELECT name FROM sqlite_master
   1.555 +  }
   1.556 +} {t1 t2}
   1.557 +
   1.558 +finish_test