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Added TRIM, LTRIM, and RTRIM functions. (CVS 3698)

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FossilOrigin-Name: 6fe13eeade4fc7099fbda1e6520640927c08debc
This commit is contained in:
drh
2007-03-17 17:52:42 +00:00
parent 26b6d90d74
commit 309b338673
4 changed files with 141 additions and 40 deletions
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54
test/func.test
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@ -11,7 +11,7 @@
# This file implements regression tests for SQLite library. The
# focus of this file is testing built-in functions.
#
# $Id: func.test,v 1.58 2007/03/17 13:27:56 drh Exp $
# $Id: func.test,v 1.59 2007/03/17 17:52:42 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
@ -440,7 +440,6 @@ do_test func-12.7 {
# Test that the auxdata API for scalar functions works. This test uses
# a special user-defined function only available in test builds,
# test_auxdata(). Function test_auxdata() takes any number of arguments.
btree_breakpoint
do_test func-13.1 {
execsql {
SELECT test_auxdata('hello world');
@ -772,6 +771,55 @@ do_test func-21.8 {
}
} {0123456789012345678901234567890123456789012345678901234567890123456789}
# Tests for the TRIM, LTRIM and RTRIM functions.
#
do_test func-22.1 {
catchsql {SELECT trim(1,2,3)}
} {1 {wrong number of arguments to function trim()}}
do_test func-22.2 {
catchsql {SELECT ltrim(1,2,3)}
} {1 {wrong number of arguments to function ltrim()}}
do_test func-22.3 {
catchsql {SELECT rtrim(1,2,3)}
} {1 {wrong number of arguments to function rtrim()}}
do_test func-22.4 {
execsql {SELECT trim(' hi ');}
} {hi}
do_test func-22.5 {
execsql {SELECT ltrim(' hi ');}
} {{hi }}
do_test func-22.6 {
execsql {SELECT rtrim(' hi ');}
} {{ hi}}
do_test func-22.7 {
execsql {SELECT trim(' hi ','xyz');}
} {{ hi }}
do_test func-22.8 {
execsql {SELECT ltrim(' hi ','xyz');}
} {{ hi }}
do_test func-22.9 {
execsql {SELECT rtrim(' hi ','xyz');}
} {{ hi }}
do_test func-22.10 {
execsql {SELECT trim('xyxzy hi zzzy','xyz');}
} {{ hi }}
do_test func-22.11 {
execsql {SELECT ltrim('xyxzy hi zzzy','xyz');}
} {{ hi zzzy}}
do_test func-22.12 {
execsql {SELECT rtrim('xyxzy hi zzzy','xyz');}
} {{xyxzy hi }}
do_test func-22.13 {
execsql {SELECT trim(' hi ','');}
} {{ hi }}
do_test func-22.20 {
execsql {SELECT typeof(trim(NULL));}
} {null}
do_test func-22.21 {
execsql {SELECT typeof(trim(NULL,'xyz'));}
} {null}
do_test func-22.22 {
execsql {SELECT typeof(trim('hello',NULL));}
} {null}
finish_test