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kawa-mode-test.el
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(require 'buttercup)
(require 'seq)
(require 'kawa-mode-utils)
(require 'kawa-mode)
(defconst debug-message "Form correctly interpreted!")
(defun find-kawa-process ()
(car
(seq-filter (lambda (x)
(eq (get-buffer "*Kawa REPL*")
(process-buffer x)))
(process-list))))
(defun kill-kawa-processes ()
(when-let ((process (find-kawa-process)))
(process-kill-without-query process)
(kill-buffer "*Kawa REPL*")))
(defun read-file (path)
(with-temp-buffer
(insert-file-contents path)
(buffer-substring (point-min) (point-max))))
(defun wait-for-kawa-to-exit-with-timeout (timeout)
(let ((process (find-kawa-process)))
(kawa--while-with-timeout (lambda ()
(process-live-p process))
timeout)))
(defun wait-for-kawa-buffer-to-change-with-timeout (timeout)
(let ((starting-size (point-max)))
(kawa--while-with-timeout (lambda ()
(= (point-max) starting-size))
timeout)))
(defun remove-file-if-any (path)
(condition-case nil
(delete-file path)
(error nil)))
(describe "kawa-mode.el"
:var (temp-file)
(before-each
(setq temp-file nil)
(expect (not (find-kawa-process))))
(after-each
(kill-kawa-processes)
(when temp-file
(remove-file-if-any temp-file)))
(describe "kawa-mode"
(it "is a command"
(expect (commandp 'kawa-mode)))
(it "sets the current buffer's mode and name"
(with-temp-buffer
(kawa-mode)
(expect mode-name
:to-equal "Kawa")
(expect major-mode
:to-equal 'kawa-mode))))
(describe "kawa-start"
(it "is a command"
(expect (commandp 'kawa-start)))
(it "starts a buffer with a process"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(expect (process-live-p (find-kawa-process)))))
(it "does not start a process is one is present already"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(let ((old-process (find-kawa-process)))
(expect (process-live-p (find-kawa-process)))
(kawa-start)
(expect (eq old-process (find-kawa-process))))))
(it "creates a new buffer and displays it"
(with-temp-buffer
(spy-on 'display-buffer)
(kawa-mode)
(kawa-start)
(expect (get-buffer "*Kawa REPL*"))
(expect (spy-calls-all-args 'display-buffer)
:to-equal (list (list (get-buffer "*Kawa REPL*")))))))
(describe "kawa-eval-expr-at-point"
(it "is a command"
(expect (commandp 'kawa-eval-expr-at-point)))
(it "starts the kawa interpreter if one is not running already"
(with-temp-buffer
(kawa-mode)
(insert "\(define x \"x symbol's value\"\)")
(kawa-eval-expr-at-point))
(expect (process-live-p (find-kawa-process))))
(it "throws an error if there is no expression before the point"
(with-temp-buffer
(kawa-mode)
(insert (make-string 100 ? ))
(expect (kawa-eval-expr-at-point) :to-throw 'error)))
(it "throws an error if there is no expression before the point (even if there is an expression after the point)"
(with-temp-buffer
(kawa-mode)
(insert (make-string 100 ? ))
(insert "\(define x 12\)")
(goto-char 50)
(expect (kawa-eval-expr-at-point) :to-throw 'error)))
(it "evaluates the expression in the buffer"
(with-temp-buffer
(insert "\(exit 0\) \(exit 3\) ")
(kawa-mode)
(kawa-start)
(let ((process (find-kawa-process)))
(kawa-eval-expr-at-point)
(expect (process-exit-status process)
:to-be 3))))
(it "sends the expression into the REPL"
(with-temp-buffer
(insert "\(define x 12\)")
(kawa-mode)
(kawa-eval-expr-at-point)
(insert "x")
(kawa-eval-expr-at-point)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# \(define x 12\)\n#|kawa:2|# x\n12\n#|kawa:3|# "))))
(it "positions the cursor at the end of the buffer"
(with-temp-buffer
(insert "\(define x 12\)")
(kawa-mode)
(kawa-eval-expr-at-point)
(let ((windows (get-buffer-window-list "*Kawa REPL*"))
(position (with-current-buffer "*Kawa REPL*"
(point-max))))
(expect (length windows) :not :to-be 0)
(expect (window-point (car windows)) :to-be position)))))
(describe "kawa-eval-buffer"
(it "is a command"
(expect (commandp 'kawa-eval-buffer)))
(it "starts the kawa interpreter if it not running already"
(with-temp-buffer
(insert "\(define x \"x symbol's value\"\)")
(kawa-mode)
(kawa-eval-buffer)
(expect (process-live-p (find-kawa-process)))))
(it "sends the buffer to the process"
(setq temp-file (make-temp-file "kawa-test-"))
(with-temp-buffer
(kawa-mode)
(kawa-start)
(let ((process (find-kawa-process)))
(with-temp-buffer
(insert (concat "(set! &<{" temp-file "} \"wrong message\")"
"(set! &<{" temp-file "} \"" debug-message "\")"
"(exit 4)"))
(kawa-eval-buffer))
(wait-for-kawa-to-exit-with-timeout 5)
(expect (process-exit-status process)
:to-be 4)
(expect (read-file temp-file)
:to-equal debug-message)))))
(describe "kawa-return"
(it "evaluates the empty expression and returns appropriate feedback"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# ")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# \n#|kawa:2|# "))))
(it "evaluates the current expression and return feedback"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# ")
(insert "(define x 12)")
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)\n#|kawa:2|# x\n12\n#|kawa:3|# "))))
(it "evaluates multi-line expressions as well"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# ")
(insert "(define x")
(kawa-return)
(insert "12)")
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x\n#|.....2|# 12)\n#|kawa:3|# x\n12\n#|kawa:4|# "))))
(it "evaluates the previous expression the user already evaluated if the cursor is on it"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(switch-to-buffer (get-buffer "*Kawa REPL*"))
(insert "(define x 100)")
(let ((last-expr-pos (point)))
(kawa-return)
(insert "(define x 12)")
(kawa-return)
(goto-char (- last-expr-pos 1))
(setq last-kbd-macro "00")
(kmacro-end-and-call-macro 1)
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 10000)
#|kawa:2|# (define x 12)
#|kawa:3|# (define x 10000)
#|kawa:4|# "))))))
(describe "kawa-history-prev"
(it "raises an error if in the wrong buffer"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(expect (kawa-history-prev) :to-throw 'error))))
(it "raises an error if there is no previous expression"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (kawa-history-prev) :to-throw 'error)))))
(it "replaces the current expression in the REPL with the previously evaluated one (kawa-eval-expr-at-point case)"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(insert "(define x 12)")
(kawa-eval-expr-at-point)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "x")
(kawa-history-prev)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define x 12)")))))
(it "replaces the current expression in the REPL with the previously evaluated one (kawa-return case)"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "x")
(kawa-history-prev)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define x 12)")))))
(it "puts the cursor at the end of the expression just substituted"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(kawa-history-prev)
(expect (point)
:to-equal (point-max))))))
(it "takes into consideration changes made to the previous expression when replacing"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(switch-to-buffer (current-buffer))
(insert "(define x 12)")
(let ((end-of-expression (point)))
(kawa-return)
(goto-char (- end-of-expression 1))
(setq last-kbd-macro "00")
(kmacro-end-and-call-macro 1)
(goto-char (point-max))
(kawa-history-prev)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 1200)
#|kawa:2|# (define x 1200)"))))))
(it "can be repeated to repeat older commands"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(insert "(define x 44)")
(kawa-return)
(kawa-history-prev) ; (define x 44)
(kawa-history-prev) ; (define y 14)
(kawa-history-prev) ; (define x 12)
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 14)
#|kawa:3|# (define x 44)
#|kawa:4|# (define x 12)
#|kawa:5|# x
12
#|kawa:6|# ")))))
(it "can be used with a prefix"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(insert "(define x 44)")
(kawa-return)
(kawa-history-prev 3)
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 14)
#|kawa:3|# (define x 44)
#|kawa:4|# (define x 12)
#|kawa:5|# x
12
#|kawa:6|# ")))))
(it "raises an error if invoked more than the commands available"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(expect (kawa-history-prev)
:to-throw 'error)))))
(it "raises an error if invoked with an argument greater than the number of commands available"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(expect (kawa-history-prev 12)
:to-throw 'error)))))
(it "raises an error if invoked with a negative argument"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(expect (kawa-history-prev -1)
:to-throw 'error))))))
(describe "kawa-history-next"
(it "raises an error if in the wrong buffer"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(expect (kawa-history-prev) :to-throw 'error))))
(it "raises an error if there is no expression further in the history"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (kawa-history-prev) :to-throw 'error)))))
(it "replaces the current expression in the REPL with the selected one one (kawa-eval-expr-at-point case)"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(insert "(define x 12)")
(kawa-eval-expr-at-point)
(insert "(define y 10)")
(kawa-eval-expr-at-point)
(insert "(define z 3)")
(kawa-eval-expr-at-point)
(with-current-buffer (get-buffer "*Kawa REPL*")
(kawa-history-prev)
(kawa-history-prev)
(insert "x")
(kawa-history-next)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 10)
#|kawa:3|# (define z 3)
#|kawa:4|# (define z 3)")))))
(it "replaces the current expression in the REPL with the previously evaluated one (kawa-return case)"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 10)")
(kawa-return)
(insert "(define z 3)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(insert "x")
(kawa-history-next)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 10)
#|kawa:3|# (define z 3)
#|kawa:4|# (define z 3)")))))
(it "puts the cursor at the end of the expression just substituted"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 13)")
(kawa-return)
(insert "(define z 14)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(kawa-history-next)
(expect (point)
:to-equal (point-max))))))
(it "can be repeated to repeat older commands"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(insert "(define x 44)")
(kawa-return)
(insert "(define x -14)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(kawa-history-prev)
(kawa-history-prev)
(kawa-history-next)
(kawa-history-next)
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 14)
#|kawa:3|# (define x 44)
#|kawa:4|# (define x -14)
#|kawa:5|# (define x 44)
#|kawa:6|# x
44
#|kawa:7|# ")))))
(it "can be used with a prefix"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(insert "(define x 44)")
(kawa-return)
(insert "(define x -14)")
(kawa-return)
(kawa-history-prev 4)
(kawa-history-next 2)
(kawa-return)
(insert "x")
(kawa-return)
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# (define x 12)
#|kawa:2|# (define y 14)
#|kawa:3|# (define x 44)
#|kawa:4|# (define x -14)
#|kawa:5|# (define x 44)
#|kawa:6|# x
44
#|kawa:7|# ")))))
(it "raises an error if invoked more than the commands available"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(kawa-history-next)
(expect (kawa-history-next)
:to-throw 'error)))))
(it "raises an error if invoked with an argument greater than the number of commands available"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(insert "(define y 14)")
(kawa-return)
(kawa-history-prev)
(kawa-history-prev)
(expect (kawa-history-next 12)
:to-throw 'error)))))
(it "raises an error if invoked with a negative argument"
(with-temp-buffer
(kawa-mode)
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(insert "(define x 12)")
(kawa-return)
(kawa-history-prev)
(expect (kawa-history-next -1)
:to-throw 'error)))))))
(describe "kawa REPL buffer"
(it "shows the kawa prompt in the buffer"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# "))))
(it "RET is equivalent to kawa-return in the REPL"
(with-temp-buffer
(kawa-mode)
(kawa-start)
(with-current-buffer (get-buffer "*Kawa REPL*")
(expect (buffer-substring-no-properties (point-min) (point-max))
:to-equal "#|kawa:1|# ")
(expect (local-key-binding (kbd "RET"))
:to-be 'kawa-return)))))