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# 2005 June 25
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this file is testing the CAST operator.
#
# $Id: cast.test,v 1.10 2008/11/06 15:33:04 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# Only run these tests if the build includes the CAST operator
ifcapable !cast {
finish_test
return
}
# Tests for the CAST( AS blob), CAST( AS text) and CAST( AS numeric) built-ins
#
ifcapable bloblit {
do_test cast-1.1 {
execsql {SELECT x'616263'}
} abc
do_test cast-1.2 {
execsql {SELECT typeof(x'616263')}
} blob
do_test cast-1.3 {
execsql {SELECT CAST(x'616263' AS text)}
} abc
do_test cast-1.4 {
execsql {SELECT typeof(CAST(x'616263' AS text))}
} text
do_test cast-1.5 {
execsql {SELECT CAST(x'616263' AS numeric)}
} 0
do_test cast-1.6 {
execsql {SELECT typeof(CAST(x'616263' AS numeric))}
} integer
do_test cast-1.7 {
execsql {SELECT CAST(x'616263' AS blob)}
} abc
do_test cast-1.8 {
execsql {SELECT typeof(CAST(x'616263' AS blob))}
} blob
do_test cast-1.9 {
execsql {SELECT CAST(x'616263' AS integer)}
} 0
do_test cast-1.10 {
execsql {SELECT typeof(CAST(x'616263' AS integer))}
} integer
}
do_test cast-1.11 {
execsql {SELECT null}
} {{}}
do_test cast-1.12 {
execsql {SELECT typeof(NULL)}
} null
do_test cast-1.13 {
execsql {SELECT CAST(NULL AS text)}
} {{}}
do_test cast-1.14 {
execsql {SELECT typeof(CAST(NULL AS text))}
} null
do_test cast-1.15 {
execsql {SELECT CAST(NULL AS numeric)}
} {{}}
do_test cast-1.16 {
execsql {SELECT typeof(CAST(NULL AS numeric))}
} null
do_test cast-1.17 {
execsql {SELECT CAST(NULL AS blob)}
} {{}}
do_test cast-1.18 {
execsql {SELECT typeof(CAST(NULL AS blob))}
} null
do_test cast-1.19 {
execsql {SELECT CAST(NULL AS integer)}
} {{}}
do_test cast-1.20 {
execsql {SELECT typeof(CAST(NULL AS integer))}
} null
do_test cast-1.21 {
execsql {SELECT 123}
} {123}
do_test cast-1.22 {
execsql {SELECT typeof(123)}
} integer
do_test cast-1.23 {
execsql {SELECT CAST(123 AS text)}
} {123}
do_test cast-1.24 {
execsql {SELECT typeof(CAST(123 AS text))}
} text
do_test cast-1.25 {
execsql {SELECT CAST(123 AS numeric)}
} 123
do_test cast-1.26 {
execsql {SELECT typeof(CAST(123 AS numeric))}
} integer
do_test cast-1.27 {
execsql {SELECT CAST(123 AS blob)}
} {123}
do_test cast-1.28 {
execsql {SELECT typeof(CAST(123 AS blob))}
} blob
do_test cast-1.29 {
execsql {SELECT CAST(123 AS integer)}
} {123}
do_test cast-1.30 {
execsql {SELECT typeof(CAST(123 AS integer))}
} integer
do_test cast-1.31 {
execsql {SELECT 123.456}
} {123.456}
do_test cast-1.32 {
execsql {SELECT typeof(123.456)}
} real
do_test cast-1.33 {
execsql {SELECT CAST(123.456 AS text)}
} {123.456}
do_test cast-1.34 {
execsql {SELECT typeof(CAST(123.456 AS text))}
} text
do_test cast-1.35 {
execsql {SELECT CAST(123.456 AS numeric)}
} 123.456
do_test cast-1.36 {
execsql {SELECT typeof(CAST(123.456 AS numeric))}
} real
do_test cast-1.37 {
execsql {SELECT CAST(123.456 AS blob)}
} {123.456}
do_test cast-1.38 {
execsql {SELECT typeof(CAST(123.456 AS blob))}
} blob
do_test cast-1.39 {
execsql {SELECT CAST(123.456 AS integer)}
} {123}
do_test cast-1.38 {
execsql {SELECT typeof(CAST(123.456 AS integer))}
} integer
do_test cast-1.41 {
execsql {SELECT '123abc'}
} {123abc}
do_test cast-1.42 {
execsql {SELECT typeof('123abc')}
} text
do_test cast-1.43 {
execsql {SELECT CAST('123abc' AS text)}
} {123abc}
do_test cast-1.44 {
execsql {SELECT typeof(CAST('123abc' AS text))}
} text
do_test cast-1.45 {
execsql {SELECT CAST('123abc' AS numeric)}
} 123
do_test cast-1.46 {
execsql {SELECT typeof(CAST('123abc' AS numeric))}
} integer
do_test cast-1.47 {
execsql {SELECT CAST('123abc' AS blob)}
} {123abc}
do_test cast-1.48 {
execsql {SELECT typeof(CAST('123abc' AS blob))}
} blob
do_test cast-1.49 {
execsql {SELECT CAST('123abc' AS integer)}
} 123
do_test cast-1.50 {
execsql {SELECT typeof(CAST('123abc' AS integer))}
} integer
do_test cast-1.51 {
execsql {SELECT CAST('123.5abc' AS numeric)}
} 123.5
do_test cast-1.53 {
execsql {SELECT CAST('123.5abc' AS integer)}
} 123
do_test case-1.60 {
execsql {SELECT CAST(null AS REAL)}
} {{}}
do_test case-1.61 {
execsql {SELECT typeof(CAST(null AS REAL))}
} {null}
do_test case-1.62 {
execsql {SELECT CAST(1 AS REAL)}
} {1.0}
do_test case-1.63 {
execsql {SELECT typeof(CAST(1 AS REAL))}
} {real}
do_test case-1.64 {
execsql {SELECT CAST('1' AS REAL)}
} {1.0}
do_test case-1.65 {
execsql {SELECT typeof(CAST('1' AS REAL))}
} {real}
do_test case-1.66 {
execsql {SELECT CAST('abc' AS REAL)}
} {0.0}
do_test case-1.67 {
execsql {SELECT typeof(CAST('abc' AS REAL))}
} {real}
do_test case-1.68 {
execsql {SELECT CAST(x'31' AS REAL)}
} {1.0}
do_test case-1.69 {
execsql {SELECT typeof(CAST(x'31' AS REAL))}
} {real}
# Ticket #1662. Ignore leading spaces in numbers when casting.
#
do_test cast-2.1 {
execsql {SELECT CAST(' 123' AS integer)}
} 123
do_test cast-2.2 {
execsql {SELECT CAST(' -123.456' AS real)}
} -123.456
# ticket #2364. Use full percision integers if possible when casting
# to numeric. Do not fallback to real (and the corresponding 48-bit
# mantissa) unless absolutely necessary.
#
do_test cast-3.1 {
execsql {SELECT CAST(9223372036854774800 AS integer)}
} 9223372036854774800
do_test cast-3.2 {
execsql {SELECT CAST(9223372036854774800 AS numeric)}
} 9223372036854774800
do_realnum_test cast-3.3 {
execsql {SELECT CAST(9223372036854774800 AS real)}
} 9.22337203685477e+18
do_test cast-3.4 {
execsql {SELECT CAST(CAST(9223372036854774800 AS real) AS integer)}
} 9223372036854774784
do_test cast-3.5 {
execsql {SELECT CAST(-9223372036854774800 AS integer)}
} -9223372036854774800
do_test cast-3.6 {
execsql {SELECT CAST(-9223372036854774800 AS numeric)}
} -9223372036854774800
do_realnum_test cast-3.7 {
execsql {SELECT CAST(-9223372036854774800 AS real)}
} -9.22337203685477e+18
do_test cast-3.8 {
execsql {SELECT CAST(CAST(-9223372036854774800 AS real) AS integer)}
} -9223372036854774784
do_test cast-3.11 {
execsql {SELECT CAST('9223372036854774800' AS integer)}
} 9223372036854774800
do_test cast-3.12 {
execsql {SELECT CAST('9223372036854774800' AS numeric)}
} 9223372036854774800
do_realnum_test cast-3.13 {
execsql {SELECT CAST('9223372036854774800' AS real)}
} 9.22337203685477e+18
ifcapable long_double {
do_test cast-3.14 {
execsql {SELECT CAST(CAST('9223372036854774800' AS real) AS integer)}
} 9223372036854774784
}
do_test cast-3.15 {
execsql {SELECT CAST('-9223372036854774800' AS integer)}
} -9223372036854774800
do_test cast-3.16 {
execsql {SELECT CAST('-9223372036854774800' AS numeric)}
} -9223372036854774800
do_realnum_test cast-3.17 {
execsql {SELECT CAST('-9223372036854774800' AS real)}
} -9.22337203685477e+18
ifcapable long_double {
do_test cast-3.18 {
execsql {SELECT CAST(CAST('-9223372036854774800' AS real) AS integer)}
} -9223372036854774784
}
if {[db eval {PRAGMA encoding}]=="UTF-8"} {
do_test cast-3.21 {
execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS integer)}
} 9223372036854774800
do_test cast-3.22 {
execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS numeric)}
} 9223372036854774800
do_realnum_test cast-3.23 {
execsql {SELECT CAST(x'39323233333732303336383534373734383030' AS real)}
} 9.22337203685477e+18
ifcapable long_double {
do_test cast-3.24 {
execsql {
SELECT CAST(CAST(x'39323233333732303336383534373734383030' AS real)
AS integer)
}
} 9223372036854774784
}
}
do_test case-3.31 {
execsql {SELECT CAST(NULL AS numeric)}
} {{}}
# Test to see if it is possible to trick SQLite into reading past
# the end of a blob when converting it to a number.
do_test cast-3.32.1 {
set blob "1234567890"
set DB [sqlite3_connection_pointer db]
set ::STMT [sqlite3_prepare $DB {SELECT CAST(? AS real)} -1 TAIL]
sqlite3_bind_blob -static $::STMT 1 $blob 5
sqlite3_step $::STMT
} {SQLITE_ROW}
do_test cast-3.32.2 {
sqlite3_column_int $::STMT 0
} {12345}
do_test cast-3.32.3 {
sqlite3_finalize $::STMT
} {SQLITE_OK}
do_test cast-4.1 {
db eval {
CREATE TABLE t1(a);
INSERT INTO t1 VALUES('abc');
SELECT a, CAST(a AS integer) FROM t1;
}
} {abc 0}
do_test cast-4.2 {
db eval {
SELECT CAST(a AS integer), a FROM t1;
}
} {0 abc}
do_test cast-4.3 {
db eval {
SELECT a, CAST(a AS integer), a FROM t1;
}
} {abc 0 abc}
do_test cast-4.4 {
db eval {
SELECT CAST(a AS integer), a, CAST(a AS real), a FROM t1;
}
} {0 abc 0.0 abc}
finish_test