archie/tcl7.6/tests/incr.test

# Commands covered:  lreplace
#
# This file contains a collection of tests for one or more of the Tcl
# built-in commands.  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 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# SCCS: @(#) incr.test 1.9 96/10/08 17:41:28

if {[string compare test [info procs test]] == 1} then {source defs}

catch {unset x}

test incr-1.1 {basic incr operation} {
    set x 23
    list [incr x] $x
} {24 24}
test incr-1.2 {basic incr operation} {
    set x 106
    list [incr x -5] $x
} {101 101}
test incr-1.3 {basic incr operation} {
    set x "  -106"
    list [incr x 1] $x
} {-105 -105}
test incr-1.4 {basic incr operation} {
    set x "  +106"
    list [incr x 1] $x
} {107 107}

test incr-2.1 {incr errors} {
    list [catch incr msg] $msg
} {1 {wrong # args: should be "incr varName ?increment?"}}
test incr-2.2 {incr errors} {
    list [catch {incr a b c} msg] $msg
} {1 {wrong # args: should be "incr varName ?increment?"}}
test incr-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
    while executing
"incr x"}}
test incr-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"
    (reading value of variable to increment)
    invoked from within
"incr x"}}
test incr-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-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-2.7 {incr errors} {
    set x -
    list [catch {incr x 1} msg] $msg
} {1 {expected integer but got "-"}}
test incr-2.8 {incr errors} {
    set x {  -  }
    list [catch {incr x 1} msg] $msg
} {1 {expected integer but got "  -  "}}
test incr-2.9 {incr errors} {
    set x +
    list [catch {incr x 1} msg] $msg
} {1 {expected integer but got "+"}}
test incr-2.10 {incr errors} {
    set x {20 x}
    list [catch {incr x 1} msg] $msg
} {1 {expected integer but got "20 x"}}

concat {}