+# Make sure '--preserve' is honored.
+result="`FOOBAR=42; export FOOBAR; guix environment -C --ad-hoc --bootstrap \
+ guile-bootstrap -E ^FOO -- guile -c '(display (getenv \"FOOBAR\"))'`"
+test "$result" = "42"
+
+# By default, the UID inside the container should be the same as outside.
+uid="`id -u`"
+inner_uid="`guix environment -C --ad-hoc --bootstrap guile-bootstrap \
+ -- guile -c '(display (getuid))'`"
+test $inner_uid = $uid
+
+# When '--user' is passed, the UID should be 1000. (Note: Use a separate HOME
+# so that we don't run into problems when the test directory is under /home.)
+export tmpdir
+inner_uid="`HOME=$tmpdir guix environment -C --ad-hoc --bootstrap guile-bootstrap \
+ --user=gnu-guix -- guile -c '(display (getuid))'`"
+test $inner_uid = 1000
+
+if test "x$USER" = "x"; then USER="`id -un`"; fi
+
+# Check whether /etc/passwd and /etc/group are valid.
+guix environment -C --ad-hoc --bootstrap guile-bootstrap \
+ -- guile -c "(exit (string=? \"$USER\" (passwd:name (getpwuid (getuid)))))"
+guix environment -C --ad-hoc --bootstrap guile-bootstrap \
+ -- guile -c '(exit (string? (group:name (getgrgid (getgid)))))'
+guix environment -C --ad-hoc --bootstrap guile-bootstrap \
+ -- guile -c '(use-modules (srfi srfi-1))
+ (exit (every group:name
+ (map getgrgid (vector->list (getgroups)))))'
+