80 lines
1.9 KiB
Plaintext
80 lines
1.9 KiB
Plaintext
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# 2020-01-29
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#
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# The author disclaims copyright to this source code. In place of
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# a legal notice, here is a blessing:
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#
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# May you do good and not evil.
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# May you find forgiveness for yourself and forgive others.
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# May you share freely, never taking more than you give.
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#
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#***********************************************************************
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#
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set testdir [file dirname $argv0]
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source $testdir/tester.tcl
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set testprefix bestindex7
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ifcapable !vtab {
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finish_test
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return
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}
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register_tcl_module db
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proc vtab_command {src method args} {
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switch -- $method {
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xConnect {
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return "CREATE TABLE xxx(a)"
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}
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xBestIndex {
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set clist [lindex $args 0]
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set iCons 0
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set ret [list]
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foreach cons $clist {
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catch { array unset C }
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array set C $cons
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if {$C(usable)} {
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lappend ret use $iCons
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}
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incr iCons
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}
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return $ret
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}
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xFilter {
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return [list sql "SELECT rowid, x FROM $src"]
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}
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}
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return {}
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}
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do_execsql_test 1.0 {
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CREATE TABLE t1(x);
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INSERT INTO t1 VALUES(0), (2);
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CREATE VIRTUAL TABLE vt1 USING tcl(vtab_command t1);
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}
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do_execsql_test 1.1 { select * from vt1 } {0 2}
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do_execsql_test 1.2 { select * from vt1 WHERE a=0 } {0}
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do_execsql_test 1.3 { select * from vt1 WHERE a=1 } {}
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do_execsql_test 1.4 { select * from vt1 WHERE a=1 OR a=0} {0}
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do_execsql_test 1.5 {
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UPDATE t1 SET x=NULL WHERE x=2;
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}
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do_execsql_test 1.6 { select * from vt1 } {0 {}}
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do_execsql_test 1.7 { select * from vt1 WHERE a=0 } {0}
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do_execsql_test 1.8 { select * from vt1 WHERE a=1 } {}
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do_execsql_test 1.9 { select * from vt1 WHERE a=1 OR a=0} {0}
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do_execsql_test 1.10 { select * from vt1 WHERE a IN (2) } {}
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do_execsql_test 1.10 { select * from vt1 WHERE a IN (0,1,2,3) } {0}
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do_execsql_test 1.11 { select * from vt1 WHERE a IN (0, NULL) } {0}
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do_execsql_test 1.12 { select * from vt1 WHERE a IN (NULL) } {}
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finish_test
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