# Commands covered:  incr

 #

 # This file contains the original set of tests for Tcl's incr command.

 # Since the incr command is now compiled, a new set of tests covering

 # the new implementation is in the file "incr.test". Sourcing this file

 # into Tcl runs the tests and generates output for errors.

 # No output means no errors were found.

 #

 # Copyright (c) 1991-1993 The Regents of the University of California.

 # Copyright (c) 1994-1996 Sun Microsystems, Inc.

 # Copyright (c) 1998-1999 by Scriptics Corporation.

 #

 # See the file "license.terms" for information on usage and redistribution

 # of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 #

 # RCS: @(#) $Id: incr-old.test,v 1.6.2.1 2003/03/27 13:11:13 dkf Exp $

 if {[lsearch [namespace children] ::tcltest] == -1} {

     package require tcltest

     namespace import -force ::tcltest::*

 }

 catch {unset x}

 test incr-old-1.1 {basic incr operation} {

     set x 23

     list [incr x] $x

 } {24 24}

 test incr-old-1.2 {basic incr operation} {

     set x 106

     list [incr x -5] $x

 } {101 101}

 test incr-old-1.3 {basic incr operation} {

     set x "  -106"

     list [incr x 1] $x

 } {-105 -105}

 test incr-old-1.4 {basic incr operation} {

     set x "  +106"

     list [incr x 1] $x

 } {107 107}

 test incr-old-2.1 {incr errors} {

     list [catch incr msg] $msg

 } {1 {wrong # args: should be "incr varName ?increment?"}}

 test incr-old-2.2 {incr errors} {

     list [catch {incr a b c} msg] $msg

 } {1 {wrong # args: should be "incr varName ?increment?"}}

 test incr-old-2.3 {incr errors} {

     catch {unset x}

     list [catch {incr x} msg] $msg $errorInfo

 } {1 {can't read "x": no such variable} {can't read "x": no such variable

     (reading value of variable to increment)

     invoked from within

 "incr x"}}

 test incr-old-2.4 {incr errors} {

     set x abc

     list [catch {incr x} msg] $msg $errorInfo

 } {1 {expected integer but got "abc"} {expected integer but got "abc"

     while executing

 "incr x"}}

 test incr-old-2.5 {incr errors} {

     set x 123

     list [catch {incr x 1a} msg] $msg $errorInfo

 } {1 {expected integer but got "1a"} {expected integer but got "1a"

     (reading increment)

     invoked from within

 "incr x 1a"}}

 test incr-old-2.6 {incr errors} {

     proc readonly args {error "variable is read-only"}

     set x 123

     trace var x w readonly

     list [catch {incr x 1} msg] $msg $errorInfo

 } {1 {can't set "x": variable is read-only} {can't set "x": variable is read-only

     while executing

 "incr x 1"}}

 catch {unset x}

 test incr-old-2.7 {incr errors} {

     set x -

     list [catch {incr x 1} msg] $msg

 } {1 {expected integer but got "-"}}

 test incr-old-2.8 {incr errors} {

     set x {  -  }

     list [catch {incr x 1} msg] $msg

 } {1 {expected integer but got "  -  "}}

 test incr-old-2.9 {incr errors} {

     set x +

     list [catch {incr x 1} msg] $msg

 } {1 {expected integer but got "+"}}

 test incr-old-2.10 {incr errors} {

     set x {20 x}

     list [catch {incr x 1} msg] $msg

 } {1 {expected integer but got "20 x"}}

 # cleanup

 ::tcltest::cleanupTests

 return