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;;; buffer.el --- Test the test support for buffers -*- lexical-binding: t -*-
(add-to-list 'load-path ".")
(load "ert-buffer" nil t)
;; ****************************************************************************
;; `ert-Buf'
(defun roundtrip-ert-Buf (in)
(with-temp-buffer
(ert-Buf--to-buffer (ert-Buf-from-string in))
(ert-Buf-string (ert-Buf-from-buffer))))
(ert-deftest ert-Buf ()
"Tests for functions working with `ert-Buf's."
(should (equal (concat ert-Buf-point-char "abc\n")
(roundtrip-ert-Buf (concat ert-Buf-point-char "abc\n"))))
(should (equal (concat "a" ert-Buf-point-char "bc\n")
(roundtrip-ert-Buf (concat "a" ert-Buf-point-char "bc\n"))))
(should (equal (concat "ab" ert-Buf-point-char "c\n")
(roundtrip-ert-Buf (concat "ab" ert-Buf-point-char "c\n"))))
(should (equal (concat "abc" ert-Buf-point-char "\n")
(roundtrip-ert-Buf (concat "abc" ert-Buf-point-char "\n"))))
(should (equal (concat "abc\n" ert-Buf-point-char)
(roundtrip-ert-Buf (concat "abc\n" ert-Buf-point-char))))
(should (equal (concat ert-Buf-point-char "abc\n" ert-Buf-mark-char "")
(roundtrip-ert-Buf
(concat ert-Buf-point-char "abc\n" ert-Buf-mark-char ""))))
(should (equal (concat ert-Buf-mark-char "abc\n" ert-Buf-point-char)
(roundtrip-ert-Buf
(concat ert-Buf-mark-char "abc\n" ert-Buf-point-char))))
(should (equal (concat "a" ert-Buf-mark-char ert-Buf-point-char "bc\n")
(roundtrip-ert-Buf
(concat "a" ert-Buf-point-char "" ert-Buf-mark-char "bc\n"))))
(should (equal (concat "ab" ert-Buf-mark-char "" ert-Buf-point-char "c\n")
(roundtrip-ert-Buf
(concat "ab" ert-Buf-mark-char ert-Buf-point-char "c\n"))))
(should-error (ert-Buf-from-string
(concat "ab" ert-Buf-point-char ert-Buf-point-char "c\n")))
(should-error (ert-Buf-from-string
(concat "ab" ert-Buf-mark-char ert-Buf-mark-char "c\n")))
)
(ert-deftest ert-Buf--from-argument ()
"Test `ert-Buf--from-argument'."
(let ((marked-a (ert-Buf-from-string
(concat ert-Buf-point-char "a" ert-Buf-mark-char))))
(should (not (ert-Buf--from-argument nil nil)))
(should (equal (ert-Buf--from-argument ?a nil)
(ert-Buf-from-string "a")))
(should (equal (ert-Buf--from-argument ert-Buf-point-char nil)
(ert-Buf-from-string ert-Buf-point-char)))
(should (equal (ert-Buf--from-argument '("a" "b") nil)
(ert-Buf-from-string "ab")))
(should (equal (ert-Buf--from-argument `("a" ,ert-Buf-point-char "b") nil)
(ert-Buf-from-string (concat "a" ert-Buf-point-char "b"))))
(should (equal (ert-Buf--from-argument marked-a nil) marked-a))
(should-error (ert-Buf--from-argument -1 nil))
(should-error (ert-Buf--from-argument [0] nil))
(should-error (ert-Buf--from-argument t nil))
(should-error (ert-Buf--from-argument t t))
(should (eq (ert-Buf--from-argument t marked-a) marked-a))
))
;; ****************************************************************************
;; Advice `ert-completing-read'
(defvar read-fun-args nil
"Input for for functions reading the minibuffer.
Consists of a list of functions and their argument lists to be
run successively. Prompt is omitted.")
(defun insert-reads ()
(interactive)
(while read-fun-args
(let* ((fun-arg (pop read-fun-args))
(result (apply (car fun-arg) "" (cdr fun-arg))))
(insert (if (integerp result)
(int-to-string result)
result) "\n"))))
(defun test-reads (inputs fun-args result)
(setq read-fun-args fun-args)
(ert-equal-buffer '(insert-reads) "" result inputs))
(ert-deftest reads ()
"Tests for functions using `completing-read's."
(should (test-reads '(5) '((read-number)) "5\n"))
(should (test-reads nil nil ""))
(should-error (test-reads '("") nil "")) ;; Too much input.
(should-error (test-reads '(5) '((read-number)
(read-number)) "")) ;; Too less input.
(should (test-reads '("") '((completing-read nil)) "\n"))
(should (test-reads '("" "") '((completing-read nil)
(completing-read nil)) "\n\n"))
(should (test-reads '("a" "b") '((completing-read nil)
(completing-read nil)) "a\nb\n"))
(should (test-reads '("a" "b") '((completing-read ("a" "b"))
(completing-read ("a" "b"))) "a\nb\n"))
(should (test-reads '("a" "b") '((completing-read ("a" "b"))
(completing-read ("a"))) "a\nb\n"))
(should-error (test-reads '("a" "b")
'((completing-read ("a" "b"))
(completing-read ("a") nil t)) "a\nb\n")) ;; Invalid input.
(should (test-reads '("a" "")
'((completing-read ("a" "b"))
(completing-read ("a") nil t)) "a\n\n"))
(should-error (test-reads '("a" "")
'((completing-read ("a" "b"))
(completing-read ("a") nil 'non-empty)) "a\n\n"))
(should (test-reads '("x") '((read-string)) "x\n"))
(should (test-reads '("") '((read-string nil nil "x")) "x\n"))
(should (test-reads '("y") '((read-string nil nil "x")) "y\n"))
(should (test-reads '("") '((read-number 5)) "5\n"))
(should (test-reads '(0) '((read-number 5)) "0\n"))
)
;; ****************************************************************************
;; Test main functions
(ert-deftest ert-equal-buffer ()
"Tests for `ert-equal-buffer'."
(should (ert-equal-buffer '(insert "foo")
(concat ert-Buf-point-char ert-Buf-mark-char)
(concat ert-Buf-mark-char "foo"
ert-Buf-point-char)))
(should (ert-equal-buffer '(delete-region)
(concat ert-Buf-mark-char "foo"
ert-Buf-point-char)
(concat ert-Buf-point-char ert-Buf-mark-char)
t))
(should (ert-equal-buffer '(delete-region 1 4)
"foo"
""))
(should-error (ert-equal-buffer '(delete-region 0 3)
(concat "foo")
"") :type 'args-out-of-range)
(should (ert-equal-buffer '(goto-char 4)
"foo"
(concat "foo" ert-Buf-point-char)))
)
(ert-deftest ert-equal-buffer-return ()
"Tests for `ert-equal-buffer-return'."
(should (ert-equal-buffer-return '(buffer-substring-no-properties 4 1)
"foo"
t
"foo"))
(should (ert-equal-buffer-return '(delete-and-extract-region 1 4)
"foo"
""
"foo"))
(should (ert-equal-buffer-return '(point)
ert-Buf-point-char
t
1))
(should (ert-equal-buffer-return '(point)
(concat " " ert-Buf-point-char)
t
2))
(should (ert-equal-buffer-return '(region-beginning)
(concat ert-Buf-point-char " "
ert-Buf-mark-char)
t
1))
(should (ert-equal-buffer-return '(region-end)
(concat ert-Buf-mark-char " "
ert-Buf-point-char)
t
2))
(should (ert-equal-buffer-return '(following-char)
(concat ert-Buf-point-char "A")
t
?A))
(should (ert-equal-buffer-return '(following-char)
(concat "A" ert-Buf-point-char)
t
0))
)
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