archie/tcl7.6/tests/incr.test

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# 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.
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# Copyright (c) 1994 Sun Microsystems, Inc.
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#
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# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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#
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# SCCS: @(#) incr.test 1.9 96/10/08 17:41:28
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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}
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test incr-1.4 {basic incr operation} {
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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}
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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"}}
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concat {}