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