1# 2022-01-20 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# 12# This file implements tests for sqlite3_vtab_rhs_value() interface. 13# 14 15set testdir [file dirname $argv0] 16source $testdir/tester.tcl 17set testprefix vtabrhs1 18 19ifcapable !vtab { 20 finish_test 21 return 22} 23load_static_extension db qpvtab 24 25# EVIDENCE-OF: R-60223-49197 When the sqlite3_vtab_rhs_value(P,J,V) 26# interface is invoked from within the xBestIndex method of a virtual 27# table implementation, with P being a copy of the sqlite3_index_info 28# object pointer passed into xBestIndex and J being a 0-based index into 29# P->aConstraint[], then this routine attempts to set *V to the value 30# of the right-hand operand of that constraint if the right-hand operand 31# is known. 32# 33do_execsql_test 1.1 { 34 SELECT rhs FROM qpvtab 35 WHERE cn='a' 36 AND a=12345 37} {12345} 38do_execsql_test 1.2 { 39 SELECT rhs FROM qpvtab 40 WHERE cn='a' 41 AND a<>4.5 42} {4.5} 43do_execsql_test 1.3 { 44 SELECT rhs FROM qpvtab 45 WHERE cn='a' 46 AND 'quokka' < a 47} {'quokka'} 48do_execsql_test 1.4 { 49 SELECT rhs FROM qpvtab 50 WHERE cn='a' 51 AND a IS NULL 52} {{}} 53do_execsql_test 1.5 { 54 SELECT rhs FROM qpvtab 55 WHERE cn='a' 56 AND a GLOB x'0123' 57} {x'0123'} 58 59# EVIDENCE-OF: R-37799-62852 If the right-hand operand is not known, 60# then *V is set to a NULL pointer. 61# 62do_execsql_test 2.1 { 63 SELECT typeof(rhs) FROM qpvtab WHERE cn='a' AND a=format('abc'); 64} {null} 65do_execsql_test 2.2 { 66 SELECT typeof(rhs) FROM qpvtab WHERE cn='a' AND a=?2 67} {null} 68 69# EVIDENCE-OF: R-14553-25174 When xBestIndex returns, the sqlite3_value 70# object returned by sqlite3_vtab_rhs_value() is automatically 71# deallocated. 72# 73# Where this not the case, the following "finish_test" statement would 74# report a memory leak. 75# 76finish_test 77