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;;; cider-font-lock-tests.el
;; Author: Alvin Francis Dumalus <alvin.francis.dumalus@gmail.com>
;; This file is NOT part of GNU Emacs.
;; This program is free software: you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see `http://www.gnu.org/licenses/'.
;;; Commentary:
;; This file is part of CIDER
;;; Code:
(require 'buttercup)
(require 'cider-mode)
;; Utilities
(defmacro cider--test-with-temp-buffer (content &rest body)
"Evaluate BODY in a temporary buffer with CONTENT."
(declare (debug t)
(indent 1))
`(with-temp-buffer
(insert ,content)
(clojure-mode)
(cider-mode)
(font-lock-fontify-buffer)
,@body))
(defun cider--face-covers-range-p (start end face)
"Return true if every face from START to END has FACE."
(let ((all-faces (mapcar (lambda (i) (get-text-property i 'face)) (number-sequence start end))))
(seq-every-p (lambda (target-face)
(or (eq face target-face)
(when (consp target-face)
(seq-contains target-face face))))
all-faces)))
(defun cider--face-exists-in-range-p (start end face)
"Return true if FACE exists between START to END."
(let ((all-faces (mapcar (lambda (i) (get-text-property i 'face)) (number-sequence start end))))
;; cl-some returns t now but will change to return a truthy value in the future
(seq-some (lambda (target-face)
(or (eq face target-face)
(when (consp target-face)
(seq-contains target-face face))))
all-faces)))
;; Tests
(describe "reader conditional font-lock"
(describe "when cider is connected"
(it "uses cider-reader-conditional-face"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'clj)
(cider--test-with-temp-buffer "#?(:clj 'clj :cljs 'cljs :cljr 'cljr)"
(let ((cider-font-lock-reader-conditionals t)
(found (cider--face-exists-in-range-p (point-min) (point-max)
'cider-reader-conditional-face)))
(expect found :to-be-truthy))))
(it "highlights unmatched reader conditionals"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'clj)
(cider--test-with-temp-buffer "#?(:clj 'clj :cljs 'cljs :cljr 'cljr)"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p 4 12 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-covers-range-p 14 24 'cider-reader-conditional-face)
:to-be-truthy)
(expect (cider--face-covers-range-p 26 34 'cider-reader-conditional-face)
:to-be-truthy))))
(it "works with splicing"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'clj)
(cider--test-with-temp-buffer "[1 2 #?(:clj [3 4] :cljs [5 6] :cljr [7 8])]"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p 1 18 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-covers-range-p 20 30 'cider-reader-conditional-face)
:to-be-truthy)
(expect (cider--face-covers-range-p 32 42 'cider-reader-conditional-face)
:to-be-truthy))))
(it "does not apply inside strings or comments"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'clj)
(cider--test-with-temp-buffer "\"#?(:clj 'clj :cljs 'cljs :cljr 'cljr)\" ;; #?(:clj 'clj :cljs 'cljs :cljr 'cljr)"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p (point-min) (point-max) 'cider-reader-conditional-face)
:not :to-be-truthy))))
(it "highlights all unmatched reader conditionals"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'cljs)
(cider--test-with-temp-buffer
"#?(:clj 'clj :cljs 'cljs :cljr 'cljr)\n#?(:clj 'clj :cljs 'cljs :cljr 'cljr)\n"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-covers-range-p 14 24 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-covers-range-p 26 36 'cider-reader-conditional-face)
:to-be-truthy)
(expect (cider--face-covers-range-p 52 62 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-covers-range-p 64 74 'cider-reader-conditional-face)
:to-be-truthy))))
(it "does not highlight beyond the limits of the reader conditional group"
(spy-on 'cider-connected-p :and-return-value t)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value 'clj)
(cider--test-with-temp-buffer
"#?(:clj 'clj :cljs 'cljs :cljr 'cljr)\n#?(:clj 'clj :cljs 'cljs :cljr 'cljr)\n"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p 1 3 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-exists-in-range-p 37 41 'cider-reader-conditional-face)
:not :to-be-truthy)
(expect (cider--face-exists-in-range-p 75 (point-max) 'cider-reader-conditional-face)
:not :to-be-truthy)))))
(describe "when multiple connections are connected"
(it "is disabled"
(spy-on 'cider-connected-p :and-return-value nil)
(spy-on 'cider-repls :and-return-value '(list t))
(spy-on 'cider-repl-type :and-return-value '(clj cljs))
(cider--test-with-temp-buffer "#?(:clj 'clj :cljs 'cljs :cljr 'cljr)"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p (point-min) (point-max) 'cider-reader-conditional-face)
:not :to-be-truthy)))))
(describe "when cider is not connected"
(it "is disabled"
(spy-on 'cider-connected-p :and-return-value nil)
(cider--test-with-temp-buffer "#?(:clj 'clj :cljs 'cljs :cljr 'cljr)"
(let ((cider-font-lock-reader-conditionals t))
(expect (cider--face-exists-in-range-p (point-min) (point-max) 'cider-reader-conditional-face)
:not :to-be-truthy))))))
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