I have the following code:

  (defconst cljs-test-report-buffer "*cljs-test-report*"
    "Buffer name in which to display test reports.")

  (defun cider-test-show-report ()
    "Show the test report buffer, if one exists."
    (if-let* ((report-buffer (get-buffer cljs-test-report-buffer)))
        (switch-to-buffer report-buffer)
      (message "No test report buffer")))

  (defun run-cljs-test-in-ns ()
    (cider-interactive-eval "(cljs.test/run-tests)")) 
;; want to show this result in the ```cljs-test-report-buffer```

And I want to show the result of the run-cljs-test-in-ns function in a new buffer, that is cleared every time this function is run. How can I do that?

  • You should specify in your question that you want to interact with cider, not just inserting a string/text in a buffer. I know nothing about cider-interactive-eval, or cider itself so I don't know what you expect. find-file, insert and revert-buffer will be a vanilla approach that will fit the question subject although I suspect it'll fall short, and comint maybe a long shot.
    – Muihlinn
    Commented Apr 27, 2020 at 21:31

1 Answer 1


You can use this, in place of just (run-cljs-test-in-ns):

(pp-display-expression (run-cljs-test-in-ns) cljs-test-report-buffer)

That assumes that whatever function run-cljs-test-in-ns returns is what you want to show, and the value of cljs-test-report-buffer is the buffer or name of the buffer where you want to show it.

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