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| 1 # 2005 June 25 |
| 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 the CAST operator. |
| 13 # |
| 14 # $Id: cast.test,v 1.10 2008/11/06 15:33:04 drh Exp $ |
| 15 |
| 16 set testdir [file dirname $argv0] |
| 17 source $testdir/tester.tcl |
| 18 |
| 19 # Only run these tests if the build includes the CAST operator |
| 20 ifcapable !cast { |
| 21 finish_test |
| 22 return |
| 23 } |
| 24 |
| 25 # Tests for the CAST( AS blob), CAST( AS text) and CAST( AS numeric) built-ins |
| 26 # |
| 27 ifcapable bloblit { |
| 28 do_test cast-1.1 { |
| 29 execsql {SELECT x'616263'} |
| 30 } abc |
| 31 do_test cast-1.2 { |
| 32 execsql {SELECT typeof(x'616263')} |
| 33 } blob |
| 34 do_test cast-1.3 { |
| 35 execsql {SELECT CAST(x'616263' AS text)} |
| 36 } abc |
| 37 do_test cast-1.4 { |
| 38 execsql {SELECT typeof(CAST(x'616263' AS text))} |
| 39 } text |
| 40 do_test cast-1.5 { |
| 41 execsql {SELECT CAST(x'616263' AS numeric)} |
| 42 } 0 |
| 43 do_test cast-1.6 { |
| 44 execsql {SELECT typeof(CAST(x'616263' AS numeric))} |
| 45 } integer |
| 46 do_test cast-1.7 { |
| 47 execsql {SELECT CAST(x'616263' AS blob)} |
| 48 } abc |
| 49 do_test cast-1.8 { |
| 50 execsql {SELECT typeof(CAST(x'616263' AS blob))} |
| 51 } blob |
| 52 do_test cast-1.9 { |
| 53 execsql {SELECT CAST(x'616263' AS integer)} |
| 54 } 0 |
| 55 do_test cast-1.10 { |
| 56 execsql {SELECT typeof(CAST(x'616263' AS integer))} |
| 57 } integer |
| 58 } |
| 59 do_test cast-1.11 { |
| 60 execsql {SELECT null} |
| 61 } {{}} |
| 62 do_test cast-1.12 { |
| 63 execsql {SELECT typeof(NULL)} |
| 64 } null |
| 65 do_test cast-1.13 { |
| 66 execsql {SELECT CAST(NULL AS text)} |
| 67 } {{}} |
| 68 do_test cast-1.14 { |
| 69 execsql {SELECT typeof(CAST(NULL AS text))} |
| 70 } null |
| 71 do_test cast-1.15 { |
| 72 execsql {SELECT CAST(NULL AS numeric)} |
| 73 } {{}} |
| 74 do_test cast-1.16 { |
| 75 execsql {SELECT typeof(CAST(NULL AS numeric))} |
| 76 } null |
| 77 do_test cast-1.17 { |
| 78 execsql {SELECT CAST(NULL AS blob)} |
| 79 } {{}} |
| 80 do_test cast-1.18 { |
| 81 execsql {SELECT typeof(CAST(NULL AS blob))} |
| 82 } null |
| 83 do_test cast-1.19 { |
| 84 execsql {SELECT CAST(NULL AS integer)} |
| 85 } {{}} |
| 86 do_test cast-1.20 { |
| 87 execsql {SELECT typeof(CAST(NULL AS integer))} |
| 88 } null |
| 89 do_test cast-1.21 { |
| 90 execsql {SELECT 123} |
| 91 } {123} |
| 92 do_test cast-1.22 { |
| 93 execsql {SELECT typeof(123)} |
| 94 } integer |
| 95 do_test cast-1.23 { |
| 96 execsql {SELECT CAST(123 AS text)} |
| 97 } {123} |
| 98 do_test cast-1.24 { |
| 99 execsql {SELECT typeof(CAST(123 AS text))} |
| 100 } text |
| 101 do_test cast-1.25 { |
| 102 execsql {SELECT CAST(123 AS numeric)} |
| 103 } 123 |
| 104 do_test cast-1.26 { |
| 105 execsql {SELECT typeof(CAST(123 AS numeric))} |
| 106 } integer |
| 107 do_test cast-1.27 { |
| 108 execsql {SELECT CAST(123 AS blob)} |
| 109 } {123} |
| 110 do_test cast-1.28 { |
| 111 execsql {SELECT typeof(CAST(123 AS blob))} |
| 112 } blob |
| 113 do_test cast-1.29 { |
| 114 execsql {SELECT CAST(123 AS integer)} |
| 115 } {123} |
| 116 do_test cast-1.30 { |
| 117 execsql {SELECT typeof(CAST(123 AS integer))} |
| 118 } integer |
| 119 do_test cast-1.31 { |
| 120 execsql {SELECT 123.456} |
| 121 } {123.456} |
| 122 do_test cast-1.32 { |
| 123 execsql {SELECT typeof(123.456)} |
| 124 } real |
| 125 do_test cast-1.33 { |
| 126 execsql {SELECT CAST(123.456 AS text)} |
| 127 } {123.456} |
| 128 do_test cast-1.34 { |
| 129 execsql {SELECT typeof(CAST(123.456 AS text))} |
| 130 } text |
| 131 do_test cast-1.35 { |
| 132 execsql {SELECT CAST(123.456 AS numeric)} |
| 133 } 123.456 |
| 134 do_test cast-1.36 { |
| 135 execsql {SELECT typeof(CAST(123.456 AS numeric))} |
| 136 } real |
| 137 do_test cast-1.37 { |
| 138 execsql {SELECT CAST(123.456 AS blob)} |
| 139 } {123.456} |
| 140 do_test cast-1.38 { |
| 141 execsql {SELECT typeof(CAST(123.456 AS blob))} |
| 142 } blob |
| 143 do_test cast-1.39 { |
| 144 execsql {SELECT CAST(123.456 AS integer)} |
| 145 } {123} |
| 146 do_test cast-1.38 { |
| 147 execsql {SELECT typeof(CAST(123.456 AS integer))} |
| 148 } integer |
| 149 do_test cast-1.41 { |
| 150 execsql {SELECT '123abc'} |
| 151 } {123abc} |
| 152 do_test cast-1.42 { |
| 153 execsql {SELECT typeof('123abc')} |
| 154 } text |
| 155 do_test cast-1.43 { |
| 156 execsql {SELECT CAST('123abc' AS text)} |
| 157 } {123abc} |
| 158 do_test cast-1.44 { |
| 159 execsql {SELECT typeof(CAST('123abc' AS text))} |
| 160 } text |
| 161 do_test cast-1.45 { |
| 162 execsql {SELECT CAST('123abc' AS numeric)} |
| 163 } 123 |
| 164 do_test cast-1.46 { |
| 165 execsql {SELECT typeof(CAST('123abc' AS numeric))} |
| 166 } integer |
| 167 do_test cast-1.47 { |
| 168 execsql {SELECT CAST('123abc' AS blob)} |
| 169 } {123abc} |
| 170 do_test cast-1.48 { |
| 171 execsql {SELECT typeof(CAST('123abc' AS blob))} |
| 172 } blob |
| 173 do_test cast-1.49 { |
| 174 execsql {SELECT CAST('123abc' AS integer)} |
| 175 } 123 |
| 176 do_test cast-1.50 { |
| 177 execsql {SELECT typeof(CAST('123abc' AS integer))} |
| 178 } integer |
| 179 do_test cast-1.51 { |
| 180 execsql {SELECT CAST('123.5abc' AS numeric)} |
| 181 } 123.5 |
| 182 do_test cast-1.53 { |
| 183 execsql {SELECT CAST('123.5abc' AS integer)} |
| 184 } 123 |
| 185 |
| 186 do_test case-1.60 { |
| 187 execsql {SELECT CAST(null AS REAL)} |
| 188 } {{}} |
| 189 do_test case-1.61 { |
| 190 execsql {SELECT typeof(CAST(null AS REAL))} |
| 191 } {null} |
| 192 do_test case-1.62 { |
| 193 execsql {SELECT CAST(1 AS REAL)} |
| 194 } {1.0} |
| 195 do_test case-1.63 { |
| 196 execsql {SELECT typeof(CAST(1 AS REAL))} |
| 197 } {real} |
| 198 do_test case-1.64 { |
| 199 execsql {SELECT CAST('1' AS REAL)} |
| 200 } {1.0} |
| 201 do_test case-1.65 { |
| 202 execsql {SELECT typeof(CAST('1' AS REAL))} |
| 203 } {real} |
| 204 do_test case-1.66 { |
| 205 execsql {SELECT CAST('abc' AS REAL)} |
| 206 } {0.0} |
| 207 do_test case-1.67 { |
| 208 execsql {SELECT typeof(CAST('abc' AS REAL))} |
| 209 } {real} |
| 210 do_test case-1.68 { |
| 211 execsql {SELECT CAST(x'31' AS REAL)} |
| 212 } {1.0} |
| 213 do_test case-1.69 { |
| 214 execsql {SELECT typeof(CAST(x'31' AS REAL))} |
| 215 } {real} |
| 216 |
| 217 |
| 218 # Ticket #1662. Ignore leading spaces in numbers when casting. |
| 219 # |
| 220 do_test cast-2.1 { |
| 221 execsql {SELECT CAST(' 123' AS integer)} |
| 222 } 123 |
| 223 do_test cast-2.2 { |
| 224 execsql {SELECT CAST(' -123.456' AS real)} |
| 225 } -123.456 |
| 226 |
| 227 # ticket #2364. Use full percision integers if possible when casting |
| 228 # to numeric. Do not fallback to real (and the corresponding 48-bit |
| 229 # mantissa) unless absolutely necessary. |
| 230 # |
| 231 do_test cast-3.1 { |
| 232 execsql {SELECT CAST(9223372036854774800 AS integer)} |
| 233 } 9223372036854774800 |
| 234 do_test cast-3.2 { |
| 235 execsql {SELECT CAST(9223372036854774800 AS numeric)} |
| 236 } 9223372036854774800 |
| 237 do_test cast-3.3 { |
| 238 execsql {SELECT CAST(9223372036854774800 AS real)} |
| 239 } 9.22337203685477e+18 |
| 240 do_test cast-3.4 { |
| 241 execsql {SELECT CAST(CAST(9223372036854774800 AS real) AS integer)} |
| 242 } 9223372036854774784 |
| 243 do_test cast-3.5 { |
| 244 execsql {SELECT CAST(-9223372036854774800 AS integer)} |
| 245 } -9223372036854774800 |
| 246 do_test cast-3.6 { |
| 247 execsql {SELECT CAST(-9223372036854774800 AS numeric)} |
| 248 } -9223372036854774800 |
| 249 do_test cast-3.7 { |
| 250 execsql {SELECT CAST(-9223372036854774800 AS real)} |
| 251 } -9.22337203685477e+18 |
| 252 do_test cast-3.8 { |
| 253 execsql {SELECT CAST(CAST(-9223372036854774800 AS real) AS integer)} |
| 254 } -9223372036854774784 |
| 255 do_test cast-3.11 { |
| 256 execsql {SELECT CAST('9223372036854774800' AS integer)} |
| 257 } 9223372036854774800 |
| 258 do_test cast-3.12 { |
| 259 execsql {SELECT CAST('9223372036854774800' AS numeric)} |
| 260 } 9223372036854774800 |
| 261 do_test cast-3.13 { |
| 262 execsql {SELECT CAST('9223372036854774800' AS real)} |
| 263 } 9.22337203685477e+18 |
| 264 ifcapable long_double { |
| 265 do_test cast-3.14 { |
| 266 execsql {SELECT CAST(CAST('9223372036854774800' AS real) AS integer)} |
| 267 } 9223372036854774784 |
| 268 } |
| 269 do_test cast-3.15 { |
| 270 execsql {SELECT CAST('-9223372036854774800' AS integer)} |
| 271 } -9223372036854774800 |
| 272 do_test cast-3.16 { |
| 273 execsql {SELECT CAST('-9223372036854774800' AS numeric)} |
| 274 } -9223372036854774800 |
| 275 do_test cast-3.17 { |
| 276 execsql {SELECT CAST('-9223372036854774800' AS real)} |
| 277 } -9.22337203685477e+18 |
| 278 ifcapable long_double { |
| 279 do_test cast-3.18 { |
| 280 execsql {SELECT CAST(CAST('-9223372036854774800' AS real) AS integer)} |
| 281 } -9223372036854774784 |
| 282 } |
| 283 if {[db eval {PRAGMA encoding}]=="UTF-8"} { |
| 284 do_test cast-3.21 { |
| 285 execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS integer)} |
| 286 } 9223372036854774800 |
| 287 do_test cast-3.22 { |
| 288 execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS numeric)} |
| 289 } 9223372036854774800 |
| 290 do_test cast-3.23 { |
| 291 execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS real)} |
| 292 } 9.22337203685477e+18 |
| 293 ifcapable long_double { |
| 294 do_test cast-3.24 { |
| 295 execsql { |
| 296 SELECT CAST(CAST(x'39323233333732303336383534373734383030' AS real) |
| 297 AS integer) |
| 298 } |
| 299 } 9223372036854774784 |
| 300 } |
| 301 } |
| 302 do_test case-3.31 { |
| 303 execsql {SELECT CAST(NULL AS numeric)} |
| 304 } {{}} |
| 305 |
| 306 # Test to see if it is possible to trick SQLite into reading past |
| 307 # the end of a blob when converting it to a number. |
| 308 do_test cast-3.32.1 { |
| 309 set blob "1234567890" |
| 310 set DB [sqlite3_connection_pointer db] |
| 311 set ::STMT [sqlite3_prepare $DB {SELECT CAST(? AS real)} -1 TAIL] |
| 312 sqlite3_bind_blob -static $::STMT 1 $blob 5 |
| 313 sqlite3_step $::STMT |
| 314 } {SQLITE_ROW} |
| 315 do_test cast-3.32.2 { |
| 316 sqlite3_column_int $::STMT 0 |
| 317 } {12345} |
| 318 do_test cast-3.32.3 { |
| 319 sqlite3_finalize $::STMT |
| 320 } {SQLITE_OK} |
| 321 |
| 322 |
| 323 do_test cast-4.1 { |
| 324 db eval { |
| 325 CREATE TABLE t1(a); |
| 326 INSERT INTO t1 VALUES('abc'); |
| 327 SELECT a, CAST(a AS integer) FROM t1; |
| 328 } |
| 329 } {abc 0} |
| 330 do_test cast-4.2 { |
| 331 db eval { |
| 332 SELECT CAST(a AS integer), a FROM t1; |
| 333 } |
| 334 } {0 abc} |
| 335 do_test cast-4.3 { |
| 336 db eval { |
| 337 SELECT a, CAST(a AS integer), a FROM t1; |
| 338 } |
| 339 } {abc 0 abc} |
| 340 do_test cast-4.4 { |
| 341 db eval { |
| 342 SELECT CAST(a AS integer), a, CAST(a AS real), a FROM t1; |
| 343 } |
| 344 } {0 abc 0.0 abc} |
| 345 |
| 346 finish_test |
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