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-rw-r--r--tests/sh.testcases29
1 files changed, 29 insertions, 0 deletions
diff --git a/tests/sh.testcases b/tests/sh.testcases
index 88e709f..e2a7587 100644
--- a/tests/sh.testcases
+++ b/tests/sh.testcases
@@ -28,6 +28,35 @@ if false; then tr 'A-Z' 'a-z'; else echo bar4; fi <foo
if true || false; then echo foo; else echo bar5; fi
if true && false; then echo bar6; else echo foo; fi
+# basic distinction between local and env variables
+unset FOO
+FOO=bar env | grep FOO
+echo "but not here: $FOO"
+FOO=bar
+env | grep FOO
+echo "yes, here: $FOO"
+FOO=
+echo a $FOO b
+echo "a $FOO b"
+
+# not quite so basic variables. Credit to Matt Kraai.
+unset FOO
+FOO=bar
+export FOO
+env | grep FOO
+unset FOO
+export FOO=bar
+FOO=baz
+env | grep FOO
+
+# interaction between environment variables and if/then and subshells
+FOO=default
+if true; then FOO=new; fi
+echo $FOO
+FOO=default
+(FOO=bogus)
+echo $FOO
+
# make sure we can duplicate file descriptors properly
echo replacement >foo 2>&1
cat foo