types3.test

sqlite-3.4.1,嵌入式数据库.是一个功能强大的开源数据库,给学习和研发以及小型公司的发展带来了全所未有的好处.

# 2005 June 25
#
# 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 testing the interaction of SQLite manifest types
# with Tcl dual-representations.
#
# $Id: types3.test,v 1.7 2007/06/26 22:42:56 drh Exp $
#

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

# A variable with only a string representation comes in as TEXT
do_test types3-1.1 {
  set V {}
  append V {}
  concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
} {string text}

# A variable with an integer representation comes in as INTEGER
do_test types3-1.2 {
  set V [expr {int(1+2)}]
  concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
} {int integer}
set V [expr {1+12345678012345}]
if {[tcl_variable_type V]=="wideInt"} {
  do_test types3-1.3 {
    set V [expr {1+123456789012345}]
    concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
  } {wideInt integer}
} else {
  do_test types3-1.3 {
    set V [expr {1+123456789012345}]
    concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
  } {int integer}
}

# A double variable comes in as REAL
do_test types3-1.4 {
  set V [expr {1.0+1}]
  concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
} {double real}

# A byte-array variable comes in a BLOB if it has no string representation
# or as TEXT if there is a string representation.
#
do_test types3-1.5 {
  set V [binary format a3 abc]
  concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
} {bytearray blob}
do_test types3-1.6 {
  set V "abc"
  binary scan $V a3 x
  concat [tcl_variable_type V] [execsql {SELECT typeof(:V)}]
} {bytearray text}

# Check to make sure return values are of the right types.
#
ifcapable bloblit {
  do_test types3-2.1 {
    set V [db one {SELECT x'616263'}]
    tcl_variable_type V
  } bytearray
}
do_test types3-2.2 {
  set V [db one {SELECT 123}]
  tcl_variable_type V
} int
do_test types3-2.3 {
  set V [db one {SELECT 1234567890123456}]
  tcl_variable_type V
} wideInt
do_test types3-2.4.1 {
  set V [db one {SELECT 1234567890123456.1}]
  tcl_variable_type V
} double
do_test types3-2.4.2 {
  set V [db one {SELECT 1234567890123.456}]
  tcl_variable_type V
} double
do_test types3-2.5 {
  set V [db one {SELECT '1234567890123456.0'}]
  tcl_variable_type V
} {}
do_test types3-2.6 {
  set V [db one {SELECT NULL}]
  tcl_variable_type V
} {}

finish_test