test/vtabA.test

# 2007 June 26
#
# 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 'hidden' virtual table columns.
#
# $Id: vtabA.test,v 1.2 2008/07/12 14:52:21 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

ifcapable !vtab {
  finish_test
  return
}

proc get_decltype {table col} {
  set STMT [sqlite3_prepare $::DB "SELECT $col FROM $table" -1 TAIL]
  set decltype [sqlite3_column_decltype $STMT 0]
  sqlite3_finalize $STMT
  set decltype
}

proc get_collist {table} {
  set ret [list]
  db eval "PRAGMA table_info($table)" { lappend ret $name }
  set ret
}

# Register the echo module
register_echo_module [sqlite3_connection_pointer db]

# Create a virtual table with a 'hidden' column (column b).
#
do_test vtabA-1.1 {
  execsql { CREATE TABLE t1(a, b HIDDEN VARCHAR, c INTEGER) }
} {}
do_test vtabA-1.2 {
  execsql { CREATE VIRTUAL TABLE t1e USING echo(t1) }
} {}

# Test that the hidden column is not listed by [PRAGMA table_info].
#
do_test vtabA-1.3 {
  execsql { PRAGMA table_info(t1e) }
} [list              \
  0 a {}      0 {} 0 \
  1 c INTEGER 0 {} 0 \
]

# Test that the hidden column is not require in the default column
# list for an INSERT statement.
#
do_test vtabA-1.4 {
  catchsql {
    INSERT INTO t1e VALUES('value a', 'value c');
  }
} {0 {}}
do_test vtabA-1.5 {
  execsql {
    SELECT a, b, c FROM t1e;
  }
} {{value a} {} {value c}}

do_test vtabA-1.6 {
  execsql {
    SELECT * FROM t1e;
  }
} {{value a} {value c}}

# Test that the expansion of a '*' expression in the result set of
# a SELECT does not include the hidden column.
#
do_test vtabA-1.7 {
  execsql {
    INSERT INTO t1e SELECT * FROM t1e;
  }
} {}
do_test vtabA-1.8 {
  execsql {
    SELECT * FROM t1e;
  }
} {{value a} {value c} {value a} {value c}}

# Test that the declaration type of the hidden column does not include
# the token "HIDDEN".
#
do_test vtabA-1.9 {
  get_decltype t1e b
} {VARCHAR}
do_test vtabA-1.10 {
  get_collist t1e
} {a c}

#----------------------------------------------------------------------
# These tests vtabA-2.* concentrate on testing that the HIDDEN token
# is detected and handled correctly in various declarations.
#
proc analyse_parse {columns decltype_list} {
  db eval { DROP TABLE IF EXISTS t1e; }
  db eval { DROP TABLE IF EXISTS t1; }
  db eval " CREATE TABLE t1 $columns "
  db eval { CREATE VIRTUAL TABLE t1e USING echo(t1) }
  set ret [list [get_collist t1e]]
  foreach c $decltype_list {
    lappend ret [get_decltype t1e $c]
  }
  set ret
}

do_test vtabA-2.1 {
  analyse_parse {(a text, b integer hidden, c hidden)} {a b c}
} {a text integer {}}

do_test vtabA-2.2 {
  analyse_parse {(a hidden   , b integerhidden, c hidden1)} {a b c}
} {{b c} {} integerhidden hidden1}

do_test vtabA-2.3 {
  analyse_parse {(a HiDden, b HIDDEN, c hidden)} {a b c}
} {{} {} {} {}}

do_test vtabA-2.4 {
  analyse_parse {(a whatelse can i hidden test, b HIDDEN hidden)} {a b}
} {{} {whatelse can i test} hidden}


# Ticket [d2f02d37f52bfe23e421f2c60fbb8586ac76ff01]:
# assertion failure on an UPDATE involving two virtual tables.
#
do_test vtabA-3.1 {
  db eval {
    DROP TABLE IF EXISTS t1;
    DROP TABLE IF EXISTS t2;
    CREATE TABLE t1(a,b);
    INSERT INTO t1 VALUES(1,2);
    CREATE TABLE t2(x,y);
    INSERT INTO t2 VALUES(3,4);
    CREATE VIRTUAL TABLE vt1 USING echo(t1);
    CREATE VIRTUAL TABLE vt2 USING echo(t2);
    UPDATE vt2 SET x=(SELECT a FROM vt1 WHERE b=2) WHERE y=4;
    SELECT * FROM t2;
  }
} {1 4}

finish_test