Let-bind stack-cache-directory instead

There are several variables and functions that depend on it; simply
binding the filter-cache file isn't enough.

1 files changed, 1 insertions, 1 deletions

diff --git a/test/tests.el b/test/tests.el
index bd0cb67..9e1cff1 100644
--- a/test/tests.el
+++ b/test/tests.el
@@ -80,7 +80,7 @@
                             '(1 2 3)))))
 
 (ert-deftest test-filters ()
-  (let ((stack-filter-cache-file (make-temp-file "stack-test-")))
+  (let ((stack-cache-directory (make-temp-file "stack-test" t)))
     (should-error (stack-filter-store "names must be symbols"
                                       "this is a filter"))
     ;; basic use