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| 1 # 2007 May 02 | |
| 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 # This file implements regression tests for SQLite library. The | |
| 12 # focus of this file is testing of the zero-filled blob functionality | |
| 13 # including the sqlite3_bind_zeroblob(), sqlite3_result_zeroblob(), | |
| 14 # and the built-in zeroblob() SQL function. | |
| 15 # | |
| 16 # $Id: zeroblob.test,v 1.14 2009/07/14 02:33:02 drh Exp $ | |
| 17 | |
| 18 set testdir [file dirname $argv0] | |
| 19 source $testdir/tester.tcl | |
| 20 | |
| 21 ifcapable !incrblob { | |
| 22 finish_test | |
| 23 return | |
| 24 } | |
| 25 | |
| 26 # When zeroblob() is used for the last field of a column, then the | |
| 27 # content of the zeroblob is never instantiated on the VDBE stack. | |
| 28 # But it does get inserted into the database correctly. | |
| 29 # | |
| 30 db eval {PRAGMA cache_size=10} | |
| 31 sqlite3_memory_highwater 1 | |
| 32 unset -nocomplain memused | |
| 33 set memused [sqlite3_memory_used] | |
| 34 do_test zeroblob-1.1 { | |
| 35 execsql { | |
| 36 CREATE TABLE t1(a,b,c,d); | |
| 37 } | |
| 38 set ::sqlite3_max_blobsize 0 | |
| 39 execsql { | |
| 40 INSERT INTO t1 VALUES(2,3,4,zeroblob(1000000)); | |
| 41 } | |
| 42 set ::sqlite3_max_blobsize | |
| 43 } {10} | |
| 44 do_test zeroblob-1.1.1 { | |
| 45 expr {[sqlite3_memory_highwater]<$::memused+25000} | |
| 46 } {1} | |
| 47 do_test zeroblob-1.2 { | |
| 48 execsql { | |
| 49 SELECT length(d) FROM t1 | |
| 50 } | |
| 51 } {1000000} | |
| 52 | |
| 53 # If a non-NULL column follows the zeroblob, then the content of | |
| 54 # the zeroblob must be instantiated. | |
| 55 # | |
| 56 do_test zeroblob-1.3 { | |
| 57 set ::sqlite3_max_blobsize 0 | |
| 58 execsql { | |
| 59 INSERT INTO t1 VALUES(3,4,zeroblob(10000),5); | |
| 60 } | |
| 61 set ::sqlite3_max_blobsize | |
| 62 } {10010} | |
| 63 do_test zeroblob-1.4 { | |
| 64 execsql { | |
| 65 SELECT length(c), length(d) FROM t1 | |
| 66 } | |
| 67 } {1 1000000 10000 1} | |
| 68 | |
| 69 # Multiple zeroblobs can appear at the end of record. No instantiation | |
| 70 # of the blob content occurs on the stack. | |
| 71 # | |
| 72 do_test zeroblob-1.5 { | |
| 73 set ::sqlite3_max_blobsize 0 | |
| 74 execsql { | |
| 75 INSERT INTO t1 VALUES(4,5,zeroblob(10000),zeroblob(10000)); | |
| 76 } | |
| 77 set ::sqlite3_max_blobsize | |
| 78 } {11} | |
| 79 do_test zeroblob-1.6 { | |
| 80 execsql { | |
| 81 SELECT length(c), length(d) FROM t1 | |
| 82 } | |
| 83 } {1 1000000 10000 1 10000 10000} | |
| 84 | |
| 85 # NULLs can follow the zeroblob() or be intermixed with zeroblobs and | |
| 86 # no instantiation of the zeroblobs occurs on the stack. | |
| 87 # | |
| 88 do_test zeroblob-1.7 { | |
| 89 set ::sqlite3_max_blobsize 0 | |
| 90 execsql { | |
| 91 INSERT INTO t1 VALUES(5,zeroblob(10000),NULL,zeroblob(10000)); | |
| 92 } | |
| 93 set ::sqlite3_max_blobsize | |
| 94 } {10} | |
| 95 do_test zeroblob-1.8 { | |
| 96 execsql { | |
| 97 SELECT length(b), length(d) FROM t1 WHERE a=5 | |
| 98 } | |
| 99 } {10000 10000} | |
| 100 | |
| 101 # Comparisons against zeroblobs work. | |
| 102 # | |
| 103 do_test zeroblob-2.1 { | |
| 104 execsql { | |
| 105 SELECT a FROM t1 WHERE b=zeroblob(10000) | |
| 106 } | |
| 107 } {5} | |
| 108 | |
| 109 # Comparisons against zeroblobs work even when indexed. | |
| 110 # | |
| 111 do_test zeroblob-2.2 { | |
| 112 execsql { | |
| 113 CREATE INDEX i1_1 ON t1(b); | |
| 114 SELECT a FROM t1 WHERE b=zeroblob(10000); | |
| 115 } | |
| 116 } {5} | |
| 117 | |
| 118 # DISTINCT works for zeroblobs | |
| 119 # | |
| 120 ifcapable bloblit&&subquery&&compound { | |
| 121 do_test zeroblob-3.1 { | |
| 122 execsql { | |
| 123 SELECT count(DISTINCT a) FROM ( | |
| 124 SELECT x'00000000000000000000' AS a | |
| 125 UNION ALL | |
| 126 SELECT zeroblob(10) AS a | |
| 127 ) | |
| 128 } | |
| 129 } {1} | |
| 130 } | |
| 131 | |
| 132 # Concatentation works with zeroblob | |
| 133 # | |
| 134 ifcapable bloblit { | |
| 135 do_test zeroblob-4.1 { | |
| 136 execsql { | |
| 137 SELECT hex(zeroblob(2) || x'61') | |
| 138 } | |
| 139 } {000061} | |
| 140 } | |
| 141 | |
| 142 # Check various CAST(...) operations on zeroblob. | |
| 143 # | |
| 144 do_test zeroblob-5.1 { | |
| 145 execsql { | |
| 146 SELECT CAST (zeroblob(100) AS REAL); | |
| 147 } | |
| 148 } {0.0} | |
| 149 do_test zeroblob-5.2 { | |
| 150 execsql { | |
| 151 SELECT CAST (zeroblob(100) AS INTEGER); | |
| 152 } | |
| 153 } {0} | |
| 154 do_test zeroblob-5.3 { | |
| 155 execsql { | |
| 156 SELECT CAST (zeroblob(100) AS TEXT); | |
| 157 } | |
| 158 } {{}} | |
| 159 do_test zeroblob-5.4 { | |
| 160 execsql { | |
| 161 SELECT CAST(zeroblob(100) AS BLOB); | |
| 162 } | |
| 163 } [execsql {SELECT zeroblob(100)}] | |
| 164 | |
| 165 | |
| 166 # Check for malicious use of zeroblob. Make sure nothing crashes. | |
| 167 # | |
| 168 do_test zeroblob-6.1.1 { | |
| 169 execsql {select zeroblob(-1)} | |
| 170 } {{}} | |
| 171 do_test zeroblob-6.1.2 { | |
| 172 execsql {select zeroblob(-10)} | |
| 173 } {{}} | |
| 174 do_test zeroblob-6.1.3 { | |
| 175 execsql {select zeroblob(-100)} | |
| 176 } {{}} | |
| 177 do_test zeroblob-6.2 { | |
| 178 execsql {select length(zeroblob(-1))} | |
| 179 } {0} | |
| 180 do_test zeroblob-6.3 { | |
| 181 execsql {select zeroblob(-1)|1} | |
| 182 } {1} | |
| 183 do_test zeroblob-6.4 { | |
| 184 catchsql {select length(zeroblob(2147483648))} | |
| 185 } {1 {string or blob too big}} | |
| 186 do_test zeroblob-6.5 { | |
| 187 catchsql {select zeroblob(2147483648)} | |
| 188 } {1 {string or blob too big}} | |
| 189 do_test zeroblob-6.6 { | |
| 190 execsql {select hex(zeroblob(-1))} | |
| 191 } {{}} | |
| 192 do_test zeroblob-6.7 { | |
| 193 execsql {select typeof(zeroblob(-1))} | |
| 194 } {blob} | |
| 195 | |
| 196 # Test bind_zeroblob() | |
| 197 # | |
| 198 sqlite3_memory_highwater 1 | |
| 199 unset -nocomplain memused | |
| 200 set memused [sqlite3_memory_used] | |
| 201 do_test zeroblob-7.1 { | |
| 202 set ::STMT [sqlite3_prepare $::DB "SELECT length(?)" -1 DUMMY] | |
| 203 set ::sqlite3_max_blobsize 0 | |
| 204 sqlite3_bind_zeroblob $::STMT 1 450000 | |
| 205 sqlite3_step $::STMT | |
| 206 } {SQLITE_ROW} | |
| 207 do_test zeroblob-7.2 { | |
| 208 sqlite3_column_int $::STMT 0 | |
| 209 } {450000} | |
| 210 do_test zeroblob-7.3 { | |
| 211 sqlite3_finalize $::STMT | |
| 212 } {SQLITE_OK} | |
| 213 do_test zeroblob-7.4 { | |
| 214 set ::sqlite3_max_blobsize | |
| 215 } {0} | |
| 216 do_test zeroblob-7.5 { | |
| 217 expr {[sqlite3_memory_highwater]<$::memused+10000} | |
| 218 } {1} | |
| 219 | |
| 220 # Test that MakeRecord can handle a value with some real content | |
| 221 # and a zero-blob tail. | |
| 222 # | |
| 223 do_test zeroblob-8.1 { | |
| 224 llength [execsql { | |
| 225 SELECT 'hello' AS a, zeroblob(10) as b from t1 ORDER BY a, b; | |
| 226 }] | |
| 227 } {8} | |
| 228 | |
| 229 | |
| 230 # Ticket #3965 | |
| 231 # zeroblobs on either size of an IN operator | |
| 232 # | |
| 233 do_test zeroblob-9.1 { | |
| 234 db eval {SELECT x'0000' IN (x'000000')} | |
| 235 } {0} | |
| 236 do_test zeroblob-9.2 { | |
| 237 db eval {SELECT x'0000' IN (x'0000')} | |
| 238 } {1} | |
| 239 do_test zeroblob-9.3 { | |
| 240 db eval {SELECT zeroblob(2) IN (x'000000')} | |
| 241 } {0} | |
| 242 do_test zeroblob-9.4 { | |
| 243 db eval {SELECT zeroblob(2) IN (x'0000')} | |
| 244 } {1} | |
| 245 do_test zeroblob-9.5 { | |
| 246 db eval {SELECT x'0000' IN (zeroblob(3))} | |
| 247 } {0} | |
| 248 do_test zeroblob-9.6 { | |
| 249 db eval {SELECT x'0000' IN (zeroblob(2))} | |
| 250 } {1} | |
| 251 do_test zeroblob-9.7 { | |
| 252 db eval {SELECT zeroblob(2) IN (zeroblob(3))} | |
| 253 } {0} | |
| 254 do_test zeroblob-9.8 { | |
| 255 db eval {SELECT zeroblob(2) IN (zeroblob(2))} | |
| 256 } {1} | |
| 257 | |
| 258 | |
| 259 finish_test | |
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