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Languguage OS 2
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Languguage OS II Version 10-94 (Knowledge Media)(1994).ISO
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dejagnu.lha
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dejagnu-1.0.1
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tcl
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tests
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env.test
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1992-11-06
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# Commands covered: none (tests environment variable implementation)
#
# 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 1991 Regents of the University of California
# Permission to use, copy, modify, and distribute this
# software and its documentation for any purpose and without
# fee is hereby granted, provided that this copyright notice
# appears in all copies. The University of California makes no
# representations about the suitability of this software for any
# purpose. It is provided "as is" without express or implied
# warranty.
#
# $Header: /sprite/src/lib/tcl/tests/RCS/env.test,v 1.4 91/09/16 14:39:47 ouster Exp $ (Berkeley)
if {[string compare test [info procs test]] == 1} then {source defs}
# If there is no "printenv" program on this system, then it's just too
# much trouble to run this test (can't necessarily run csh to get the
# envionrment: on some systems it barfs if there isn't a minimum set
# predefined environment variables. Also, printenv returns a non-zero
# status on some systems, so read the environment using a procedure
# that catches errors.
set printenv {}
if [info exists env(PATH)] {
set dirs [split $env(PATH) :]
} else {
set dirs {/bin /usr/bin /usr/ucb /usr/local /usr/public /usr/etc}
}
foreach i $dirs {
if [file executable $i/printenv] {
set printenv $i/printenv
break
}
}
if {$printenv == ""} {
puts stdout "Skipping env tests: need \"printenv\" to read environment."
return ""
}
proc getenv {} {
global printenv
catch {exec $printenv} out
return $out
}
# Save the current environment variables at the start of the test.
foreach name [array names env] {
set env2($name) $env($name)
unset env($name)
}
test env-1.1 {adding environment variables} {
getenv
} {}
set env(NAME1) "test string"
test env-1.2 {adding environment variables} {
getenv
} {NAME1=test string}
set env(NAME2) "more"
test env-1.3 {adding environment variables} {
getenv
} {NAME1=test string
NAME2=more}
set env(XYZZY) "garbage"
test env-1.4 {adding environment variables} {
getenv
} {NAME1=test string
NAME2=more
XYZZY=garbage}
set env(NAME2) "new value"
test env-2.1 {changing environment variables} {
getenv
} {NAME1=test string
NAME2=new value
XYZZY=garbage}
unset env(NAME2)
test env-3.1 {unsetting environment variables} {
getenv
} {NAME1=test string
XYZZY=garbage}
unset env(NAME1)
test env-3.2 {unsetting environment variables} {
getenv
} {XYZZY=garbage}
# Restore the environment variables at the end of the test.
foreach name [array names env] {
unset env($name)
}
foreach name [array names env2] {
set env($name) $env2($name)
}