wasCSharpSQLite – Blame information for rev 7
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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 |