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(require 'buttercup)
(require 'cider)
(require 'cider-selector)

;; selector
(defun cider-invoke-selector-method-by-key (ch)
  (let ((method (cl-find ch cider-selector-methods :key #'car)))
    (funcall (cl-third method))))

(defun cider--test-selector-method (method buffer-mode buffer-name)
  (with-temp-buffer
    (rename-buffer buffer-name)
    (setq major-mode buffer-mode)
    (let ((expected-buffer (current-buffer)))
      ;; switch to another buffer
      (with-temp-buffer
        (cider-invoke-selector-method-by-key method)
        (expect (current-buffer) :to-equal expected-buffer)))))

(describe "cider-selector-n"
  :var (cider-endpoint cider-connections)
  (it "switches to the connection browser buffer"
    (with-temp-buffer
      (setq cider-endpoint '("123.123.123.123" 4006)
            cider-connections (list (current-buffer)))
      (with-temp-buffer
        ;; switch to another buffer
        (cider-invoke-selector-method-by-key ?n)
        (expect (current-buffer) :to-equal
                (get-buffer cider--connection-browser-buffer-name))))))

(describe "cider-seletor-method-c"
  (it "switches to most recently visited clojure-mode buffer"
    (cider--test-selector-method ?c 'clojure-mode "*testfile*.clj")))

(describe "cider-seletor-method-e"
  (it "switches to most recently visited emacs-lisp-mode buffer"
    (kill-buffer "*scratch*")
    (cider--test-selector-method ?e 'emacs-lisp-mode "*testfile*.el")))

(describe "cider-seletor-method-r"
  :var (cider-current-repl-buffer)
  (it "switches to current REPL buffer"
    (spy-on 'cider-current-repl-buffer :and-return-value "*cider-repl xyz*")
    (cider--test-selector-method ?r 'cider-repl-mode "*cider-repl xyz*")))

(describe "cider-selector-method-m"
  :var (cider-current-messages-buffer)
  (it "switches to current connection's *nrepl-messages* buffer"
    (spy-on 'cider-current-messages-buffer :and-return-value "*nrepl-messages conn-id*")
    (cider--test-selector-method ?m nil "*nrepl-messages conn-id*")))

(describe "cider-seletor-method-x"
  (it "switches to *cider-error* buffer"
    (cider--test-selector-method ?x 'cider-stacktrace-mode "*cider-error*")))

(describe "cider-seletor-method-d"
  (it "switches to *cider-doc* buffer"
    (cider--test-selector-method ?d 'cider-stacktrace-mode "*cider-doc*")))

(describe "cider-seletor-method-s"
  :var (cider-find-or-create-scratch-buffer)
  (it "switches to *cider-scratch* buffer"
    (spy-on 'cider-find-or-create-scratch-buffer :and-return-value "*cider-scratch*")
    (cider--test-selector-method ?s 'cider-docview-mode "*cider-scratch*")))