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| 1 # 2006 February 16 | |
| 2 # | |
| 3 # The author disclaims copyright to this source code. In place of | |
| 4 # a legal notice, here is a blessing: | |
| 5 # | |
| 6 # May you do good and not evil. | |
| 7 # May you find forgiveness for yourself and forgive others. | |
| 8 # May you share freely, never taking more than you give. | |
| 9 # | |
| 10 #*********************************************************************** | |
| 11 # | |
| 12 # This file contains code to verify that the SQLITE_UTF16_ALIGNED | |
| 13 # flag passed into the sqlite3_create_collation() function insures | |
| 14 # that all strings passed to that function are aligned on an even | |
| 15 # byte boundary. | |
| 16 # | |
| 17 # $Id: utf16align.test,v 1.2 2008/11/07 03:29:34 drh Exp $ | |
| 18 | |
| 19 set testdir [file dirname $argv0] | |
| 20 source $testdir/tester.tcl | |
| 21 | |
| 22 # Skip this entire test if we do not support UTF16 | |
| 23 # | |
| 24 ifcapable !utf16 { | |
| 25 finish_test | |
| 26 return | |
| 27 } | |
| 28 | |
| 29 # Create a database with a UTF16 encoding. Put in lots of string | |
| 30 # data of varying lengths. | |
| 31 # | |
| 32 do_test utf16align-1.0 { | |
| 33 set unaligned_string_counter 0 | |
| 34 add_alignment_test_collations [sqlite3_connection_pointer db] | |
| 35 execsql { | |
| 36 PRAGMA encoding=UTF16; | |
| 37 CREATE TABLE t1( | |
| 38 id INTEGER PRIMARY KEY, | |
| 39 spacer TEXT, | |
| 40 a TEXT COLLATE utf16_aligned, | |
| 41 b TEXT COLLATE utf16_unaligned | |
| 42 ); | |
| 43 INSERT INTO t1(a) VALUES("abc"); | |
| 44 INSERT INTO t1(a) VALUES("defghi"); | |
| 45 INSERT INTO t1(a) VALUES("jklmnopqrstuv"); | |
| 46 INSERT INTO t1(a) VALUES("wxyz0123456789-"); | |
| 47 UPDATE t1 SET b=a||'-'||a; | |
| 48 INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1; | |
| 49 INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1; | |
| 50 INSERT INTO t1(a,b) SELECT a||b, b||a FROM t1; | |
| 51 INSERT INTO t1(a,b) VALUES('one','two'); | |
| 52 INSERT INTO t1(a,b) SELECT a, b FROM t1; | |
| 53 UPDATE t1 SET spacer = CASE WHEN rowid&1 THEN 'x' ELSE 'xx' END; | |
| 54 SELECT count(*) FROM t1; | |
| 55 } | |
| 56 } 66 | |
| 57 do_test utf16align-1.1 { | |
| 58 set unaligned_string_counter | |
| 59 } 0 | |
| 60 | |
| 61 # Creating an index that uses the unaligned collation. We should see | |
| 62 # some unaligned strings passed to the collating function. | |
| 63 # | |
| 64 do_test utf16align-1.2 { | |
| 65 execsql { | |
| 66 CREATE INDEX t1i1 ON t1(spacer, b); | |
| 67 } | |
| 68 # puts $unaligned_string_counter | |
| 69 expr {$unaligned_string_counter>0} | |
| 70 } 1 | |
| 71 | |
| 72 # Create another index that uses the aligned collation. This time | |
| 73 # there should be no unaligned accesses | |
| 74 # | |
| 75 do_test utf16align-1.3 { | |
| 76 set unaligned_string_counter 0 | |
| 77 execsql { | |
| 78 CREATE INDEX t1i2 ON t1(spacer, a); | |
| 79 } | |
| 80 expr {$unaligned_string_counter>0} | |
| 81 } 0 | |
| 82 integrity_check utf16align-1.4 | |
| 83 | |
| 84 # ticket #3482 | |
| 85 # | |
| 86 db close | |
| 87 sqlite3 db :memory: | |
| 88 do_test utf16align-2.1 { | |
| 89 db eval { | |
| 90 PRAGMA encoding=UTF16be; | |
| 91 SELECT hex(ltrim(x'6efcda')); | |
| 92 } | |
| 93 } {6EFC} | |
| 94 | |
| 95 finish_test | |
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Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
