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Add more tests for simple-indent #424

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82 changes: 82 additions & 0 deletions tests/haskell-simple-indent-tests.el
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,26 @@
(setq result (cons (current-column) result)))
(reverse result))))


(defun find-indent-and-backtab-positions (lines-above-content &optional prepare-buffer)
(with-temp-buffer
(if prepare-buffer
(funcall prepare-buffer))
(dolist (line lines-above-content)
(insert line)
(insert "\n"))
;; cursor is at the beginning of the second line now
(let ((result-forward '(0))
(result-backward '()))
(dotimes (i 9)
(haskell-simple-indent)
(setq result-forward (cons (current-column) result-forward)))
(dotimes (i 9)
(setq result-backward (cons (current-column) result-backward))
(haskell-simple-indent-backtab))
(setq result-backward (cons (current-column) result-backward))
(list (reverse result-forward) result-backward))))

(ert-deftest find-indent-positions-1 ()
(should (equal '(5 7 10 19 26 32 40 48 56 64)
(find-indent-positions '("main = do putStrLn \"Hello World!\"")))))
Expand All @@ -33,3 +53,65 @@
(should (equal '(2 4 5 8 16 24 32 40 48 56)
(find-indent-positions '("a b c d e f g h"
" long_streak")))))

(ert-deftest find-indent-positions-5 ()
(should (equal '(2 4 6 13 15 17 19 24 32 40)
(find-indent-positions '(" f g e e iirelevant"
"a b c d"
" h idden"
" hidden"
""
" e f g h"
"")))))

(ert-deftest find-indent-and-backtab-positions-1 ()
(should (equal '((0 2 4 5 8 16 24 32 40 48)
(0 2 4 5 8 16 24 32 40 48))
;; Note: haskell-simple-indent-backtab is broken when
;; it encounters TABs in source file.
(find-indent-and-backtab-positions '("a b c d e f g h"
" long_streak")
(lambda ()
(setq indent-tabs-mode nil))))))

(ert-deftest find-indent-and-backtab-positions-1a ()
(should (equal '((0 2 4 5 8 16 24 32 40 48)
(0 2 4 5 8 16 24 32 40 48))
(find-indent-and-backtab-positions '("a b c d e f g h"
" long_streak")))))

(ert-deftest find-indent-and-backtab-positions-2 ()
(should (equal '((0 8 10 13 20 24 27 32 35 37)
(0 8 10 13 20 24 27 32 35 37))
(find-indent-and-backtab-positions '("\tx <- return 123 {- This is a comment -}")
(lambda ()
(setq-local indent-tabs-mode nil))))))

(ert-deftest find-indent-and-backtab-positions-2a ()
(should (equal '((0 8 10 13 20 24 27 32 35 37)
(0 8 10 13 20 24 27 32 35 37))
(find-indent-and-backtab-positions '("\tx <- return 123 {- This is a comment -}")))))

(ert-deftest find-indent-and-backtab-positions-3 ()
(should (equal '((0 2 4 6 13 15 17 19 24 32)
(0 2 4 6 13 15 17 19 24 32))
(find-indent-and-backtab-positions '(" f g e e iirelevant"
"a b c d"
" h idden x"
" hidden 4 5"
""
" e f g h"
"")
(lambda ()
(setq-local indent-tabs-mode nil))))))

(ert-deftest find-indent-and-backtab-positions-3a ()
(should (equal '((0 2 4 6 13 15 17 19 24 32)
(0 2 4 6 13 15 17 19 24 32))
(find-indent-and-backtab-positions '(" f g e e iirelevant"
"a b c d"
" h idden x"
" hidden 4 5"
""
" e f g h"
"")))))