sqlite/test/hidden.test

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# 2015 November 18
#
# 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.
#
#***********************************************************************
#
# Test the __hidden__ hack.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
set testprefix hidden
ifcapable !hiddencolumns {
finish_test
return
}
do_execsql_test 1.1 {
CREATE TABLE t1(__hidden__a, b);
INSERT INTO t1 VALUES('1');
INSERT INTO t1(__hidden__a, b) VALUES('x', 'y');
} {}
do_execsql_test 1.2 {
SELECT * FROM t1;
} {1 y}
do_execsql_test 1.3 {
SELECT __hidden__a, * FROM t1;
} {{} 1 x y}
foreach {tn view} {
1 { CREATE VIEW v1(a, b, __hidden__c) AS SELECT a, b, c FROM x1 }
2 { CREATE VIEW v1 AS SELECT a, b, c AS __hidden__c FROM x1 }
} {
do_execsql_test 2.$tn.1 {
DROP TABLE IF EXISTS x1;
CREATE TABLE x1(a, b, c);
INSERT INTO x1 VALUES(1, 2, 3);
}
catchsql { DROP VIEW v1 }
execsql $view
do_execsql_test 2.$tn.2 {
SELECT a, b, __hidden__c FROM v1;
} {1 2 3}
do_execsql_test 2.$tn.3 {
SELECT * FROM v1;
} {1 2}
do_execsql_test 2.$tn.4 {
CREATE TRIGGER tr1 INSTEAD OF INSERT ON v1 BEGIN
INSERT INTO x1 VALUES(new.a, new.b, new.__hidden__c);
END;
INSERT INTO v1 VALUES(4, 5);
SELECT * FROM x1;
} {1 2 3 4 5 {}}
do_execsql_test 2.$tn.5 {
INSERT INTO v1(a, b, __hidden__c) VALUES(7, 8, 9);
SELECT * FROM x1;
} {1 2 3 4 5 {} 7 8 9}
}
#-------------------------------------------------------------------------
# Test INSERT INTO ... SELECT ... statements that write to tables with
# hidden columns.
#
do_execsql_test 3.1 {
CREATE TABLE t4(a, __hidden__b, c);
INSERT INTO t4 SELECT 1, 2;
SELECT a, __hidden__b, c FROM t4;
} {1 {} 2}
do_execsql_test 3.2.1 {
CREATE TABLE t5(__hidden__a, b, c);
CREATE TABLE t6(__hidden__a, b, c);
INSERT INTO t6(__hidden__a, b, c) VALUES(1, 2, 3);
INSERT INTO t6(__hidden__a, b, c) VALUES(4, 5, 6);
INSERT INTO t6(__hidden__a, b, c) VALUES(7, 8, 9);
}
do_execsql_test 3.2.2 {
INSERT INTO t5 SELECT * FROM t6;
SELECT * FROM t5;
} {2 3 5 6 8 9}
do_execsql_test 3.2.3 {
SELECT __hidden__a FROM t5;
} {{} {} {}}
do_execsql_test 3.3.1 {
CREATE TABLE t5a(a, b, __hidden__c);
CREATE TABLE t6a(a, b, __hidden__c);
INSERT INTO t6a(a, b, __hidden__c) VALUES(1, 2, 3);
INSERT INTO t6a(a, b, __hidden__c) VALUES(4, 5, 6);
INSERT INTO t6a(a, b, __hidden__c) VALUES(7, 8, 9);
}
do_execsql_test 3.3.2 {
INSERT INTO t5a SELECT * FROM t6a;
SELECT * FROM t5a;
} {1 2 4 5 7 8}
do_execsql_test 3.3.3 {
SELECT __hidden__c FROM t5a;
} {{} {} {}}
do_execsql_test 3.4.1 {
CREATE TABLE t5b(a, __hidden__b, c);
CREATE TABLE t6b(a, b, __hidden__c);
INSERT INTO t6b(a, b, __hidden__c) VALUES(1, 2, 3);
INSERT INTO t6b(a, b, __hidden__c) VALUES(4, 5, 6);
INSERT INTO t6b(a, b, __hidden__c) VALUES(7, 8, 9);
}
do_execsql_test 3.4.2 {
INSERT INTO t5b SELECT * FROM t6b;
SELECT * FROM t5b;
} {1 2 4 5 7 8}
do_execsql_test 3.4.3 {
SELECT __hidden__b FROM t5b;
} {{} {} {}}
#-------------------------------------------------------------------------
# Test VACUUM
#
reset_db
do_execsql_test 4.1 {
CREATE TABLE t1(a, __hidden__b, c UNIQUE);
INSERT INTO t1(a, __hidden__b, c) VALUES(1, 2, 3);
INSERT INTO t1(a, __hidden__b, c) VALUES(4, 5, 6);
INSERT INTO t1(a, __hidden__b, c) VALUES(7, 8, 9);
DELETE FROM t1 WHERE __hidden__b = 5;
SELECT rowid, a, __hidden__b, c FROM t1;
} {1 1 2 3 3 7 8 9}
do_execsql_test 4.2 {
VACUUM;
SELECT rowid, a, __hidden__b, c FROM t1;
} {1 1 2 3 3 7 8 9}
finish_test