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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)
- }
-