Re-frame dispatches and subscribes not working in the repl and test files - clojurescript

Question

I have a re-frame project, and my events, subs and db cljs files are populated. I use these three in my project and it works well. But I created a test file, and called subscribe and dispatch in it like so:
(deftest category-filter-test
(dispatch [:add-filter "cat"])
(is (= #(subscribe [:filters]) ["cat"]))
)
And that doesn't work. I get
#object[Error Error: No protocol method IDeref.-deref defined for type undefined: ]
On the other hand, if I try to run subscribe in the shadow-cljs repl, I get the following error:
------ WARNING - :undeclared-ns ------------------------------------------------
Resource: :1:2
No such namespace: user, could not locate user.cljs, user.cljc, or JavaScript source providing "user"
--------------------------------------------------------------------------------
------ WARNING - :undeclared-var -----------------------------------------------
Resource: :1:2
Use of undeclared Var user/start
--------------------------------------------------------------------------------
ReferenceError: user is not defined
at eval (eval at shadow$cljs$devtools$client$browser$global_eval (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.browser.js), <anonymous>:1:1)
at eval (<anonymous>)
at Object.shadow$cljs$devtools$client$browser$global_eval [as global_eval] (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.browser.js:758:16)
at eval (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.browser.js:767:44)
at Object.shadow$cljs$devtools$client$env$repl_call [as repl_call] (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.env.js:167:108)
at Object.shadow$cljs$devtools$client$browser$repl_invoke [as repl_invoke] (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.browser.js:766:46)
at shadow$cljs$devtools$client$browser$handle_message (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.browser.js:844:37)
at eval (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.env.js:307:151)
at Object.shadow$cljs$devtools$client$env$process_next_BANG_ [as process_next_BANG_] (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.env.js:289:90)
at Object.shadow$cljs$devtools$client$env$process_ws_msg [as process_ws_msg] (http://localhost:3689/js/workspaces/cljs-runtime/shadow.cljs.devtools.client.env.js:310:40)
How to fix these two errors?