1 files changed, 206 insertions, 0 deletions
diff --git a/tests/varenv.sh b/tests/varenv.sh
new file mode 100644
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+++ b/tests/varenv.sh
@@ -0,0 +1,206 @@
+#
+# varenv.sh
+#
+# Test the behavior of the shell with respect to variable and environment
+# assignments
+#
+expect()
+{
+	echo expect "$@"
+}
+
+a=1
+b=2
+c=3
+d=4
+e=5
+f=6 g=7 h=8
+
+a=3 b=4 $CHMOD $MODE $FN
+
+# This should echo "3 4" according to Posix.2
+expect "3 4"
+echo $a $b
+
+set -k
+
+# Assignment statements made when no words are left affect the shell's
+# environment
+a=5 b=6 $CHMOD c=7 $MODE d=8 $FN e=9
+
+expect "5 6 7 8 9"
+echo $a $b $c $d $e
+
+$CHMOD f=7 $MODE g=8 $FN h=9
+expect "7 8 9"
+echo $f $g $h
+
+set +k
+
+# The temporary environment does not affect variable expansion, only the
+# environment given to the command
+
+export HOME=/usr/chet
+expect $HOME
+echo $HOME
+
+expect $HOME
+HOME=/a/b/c /bin/echo $HOME
+
+expect $HOME
+echo $HOME
+
+# This should echo /a/b/c
+expect /a/b/c
+HOME=/a/b/c printenv HOME
+
+set -k
+
+# This should echo $HOME 9, NOT /a/b/c 9
+
+expect "$HOME"
+HOME=/a/b/c /bin/echo $HOME c=9
+expect "$HOME 7"
+echo $HOME $c
+
+# I claim the next two echo calls should give identical output.
+# ksh agrees, the System V.3 sh does not
+
+expect "/a/b/c 9 /a/b/c"
+HOME=/a/b/c $ECHO a=$HOME c=9
+echo $HOME $c $a
+
+expect "/a/b/c 9 /a/b/c"
+HOME=/a/b/c a=$HOME c=9
+echo $HOME $c $a
+set +k
+
+# How do assignment statements affect subsequent assignments on the same
+# line?
+expect "/a/b/c /a/b/c"
+HOME=/a/b/c a=$HOME
+echo $HOME $a
+
+# The system V.3 sh does this wrong; the last echo should output "1 1",
+# but the system V.3 sh has it output "2 2".  Posix.2 says the assignment
+# statements are processed left-to-right.  bash and ksh output the right
+# thing
+c=1
+d=2
+expect "1 2"
+echo $c $d
+d=$c c=$d
+expect "1 1"
+echo $c $d
+
+# just for completeness
+unset d c
+expect unset
+echo ${d-unset}
+
+# no output
+export a
+a=bcde
+export a
+/bin/true 2>/dev/null
+
+func()
+{
+	local YYZ
+
+	YYZ="song by rush"
+	echo $YYZ
+	echo $A
+}
+
+YYZ="toronto airport"
+A="AVAR"
+echo $YYZ
+echo $A
+A=BVAR func
+echo $YYZ
+echo $A
+
+export A
+# Make sure expansion doesn't use assignment statements preceding a builtin
+A=ZVAR echo $A
+
+XPATH=/bin:/usr/bin:/usr/local/bin:.
+func2()
+{
+	local z=yy
+	local -a avar=( ${XPATH//: } )
+	echo ${avar[@]}
+	local
+}
+
+avar=42
+echo $avar
+func2
+echo $avar
+
+# try to set an attribute for an unset variable; make sure it persists
+# when the variable is assigned a value
+declare -i ivar
+
+ivar=10
+
+declare -p ivar
+unset ivar
+
+# export an unset variable, make sure it is not suddenly set, but make
+# sure the export attribute persists when the variable is assigned a
+# value
+export ivar
+echo ${ivar-unset}
+
+ivar=42
+declare -p ivar
+
+# make sure set [-+]o ignoreeof and $IGNOREEOF are reflected
+unset IGNOREEOF
+set +o ignoreeof
+set -o ignoreeof
+if [ "$IGNOREEOF" -ne 10 ]; then
+	echo "./varenv.sh: set -o ignoreeof is not reflected in IGNOREEOF" >&2
+fi
+unset IGNOREEOF
+set +o ignoreeof
+
+# older versions of bash used to not reset RANDOM in subshells correctly
+[[ $RANDOM -eq $(echo $RANDOM) ]] && echo "RANDOM: problem with subshells"
+
+# make sure that shopt -o is reflected in $SHELLOPTS
+# first, get rid of things that might be set automatically via shell
+# variables
+set +o posix
+set +o ignoreeof
+set +o monitor
+echo $-
+echo ${SHELLOPTS}
+shopt -so physical
+echo $-
+echo ${SHELLOPTS}
+
+# and make sure it is readonly
+readonly -p | grep SHELLOPTS
+
+# This was an error in bash versions prior to bash-2.04.  The `set -a'
+# should cause the assignment statement that's an argument to typeset
+# to create an exported variable
+unset FOOFOO
+FOOFOO=bar
+set -a
+typeset FOOFOO=abcde
+
+printenv FOOFOO
+
+# test out export behavior of variable assignments preceding builtins and
+# functions
+$THIS_SH ./varenv1.sub
+
+# more tests; bugs in bash up to version 2.05a
+$THIS_SH ./varenv2.sub
+
+# make sure variable scoping is done right
+tt() { typeset a=b;echo a=$a; };a=z;echo a=$a;tt;echo a=$a