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;;; vtable-tests.el --- Tests for vtable.el -*- lexical-binding: t; -*-
;; Copyright (C) 2022-2026 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'vtable)
(require 'ert)
(require 'ert-x)
(defun vtable-tests--make-no-header-2-object-table ()
(make-vtable :columns '("a" "b" "c")
:objects '(("foo" 1 2)
("bar" 3 :zot))
:insert nil))
(ert-deftest test-vtable-compute-columns ()
(should
(equal (mapcar
(lambda (column)
(vtable-column-align column))
(vtable--compute-columns
(vtable-tests--make-no-header-2-object-table)))
'(left right left))))
(ert-deftest test-vtable-insert-object ()
(should
(equal (let ((buffer (get-buffer-create " *vtable-test*")))
(pop-to-buffer buffer)
(erase-buffer)
(let* ((object1 '("Foo" 3))
(object2 '("Gazonk" 8))
(table (make-vtable
:columns '("Name" (:name "Rank" :width 5))
:objects (list object1 object2))))
(mapc (lambda (args)
(pcase-let ((`(,object ,location ,before) args))
(vtable-insert-object table object location before)))
`( ; Some correct inputs.
;; object location before
(("Fizz" 4) ,object1 nil)
(("Bop" 7) ,object2 t)
(("Zat" 5) 2 nil)
(("Dib" 6) 3 t)
(("Wup" 9) nil nil)
(("Quam" 2) nil t)
;; And some faulty inputs.
(("Yat" 1) -1 nil) ; non-existing index, `before' is ignored.
(("Vop" 10) 100 t) ; non-existing index, `before' is ignored.
(("Jib" 11) ("Bleh" 0) nil) ; non-existing object.
(("Nix" 0) ("Ugh" 0) t) ; non-existing object.
))
(mapcar #'cadr (vtable-objects table))))
(number-sequence 0 11))))
(ert-deftest test-vtable-unique-buffer ()
(let ((table (vtable-tests--make-no-header-2-object-table)))
(with-temp-buffer
(vtable-insert table)
(with-temp-buffer
(should-error (vtable-insert table)))
(with-temp-buffer
(vtable-set-buffer table (current-buffer))
(vtable-insert table)))))
(ert-deftest test-vtable-read-only-buffer ()
(let ((table (vtable-tests--make-no-header-2-object-table)))
(with-temp-buffer
(setq buffer-read-only t)
(vtable-insert table))))
(ert-deftest test-vtable-non-current-buffer-insert-object ()
(let ((table (vtable-tests--make-no-header-2-object-table))
(obj '("baz" 4 5)))
(with-temp-buffer
(vtable-insert table)
(should (= (count-lines (point-min) (point-max)) 2))
(with-temp-buffer
(vtable-insert-object table obj))
(should (= (count-lines (point-min) (point-max)) 3)))))
(ert-deftest test-vtable-non-current-buffer-remove-object ()
(let ((table (vtable-tests--make-no-header-2-object-table))
(obj '("baz" 4 5)))
(with-temp-buffer
(vtable-insert table)
(vtable-insert-object table obj)
(should (= (count-lines (point-min) (point-max)) 3))
(with-temp-buffer
(vtable-remove-object table obj))
(should (= (count-lines (point-min) (point-max)) 2)))))
(ert-deftest test-vtable-non-current-buffer-update-object ()
(let ((table (vtable-tests--make-no-header-2-object-table))
(obj '("baz" 4 5))
(obj-2 '("qux" 6 7)))
(with-temp-buffer
(vtable-insert table)
(vtable-insert-object table obj)
(should (= (count-lines (point-min) (point-max)) 3))
(let ((line-2 (progn
(goto-char (point-min))
(forward-line 2)
(buffer-substring (point) (point-max)))))
(with-temp-buffer
(vtable-update-object table obj-2 obj))
(let ((line-2-new (progn
(goto-char (point-min))
(forward-line 2)
(buffer-substring (point) (point-max)))))
(should (= (count-lines (point-min) (point-max)) 3))
(should (not (string= line-2 line-2-new))))))))
(ert-deftest test-vtable--limit-string-with-face-remapped-buffer ()
(with-temp-buffer
(let ((text (propertize "XXXXX"
'face 'variable-pitch)))
(face-remap-add-relative 'default :height 1.5)
;; TODO: Remove the pre-31 test, eventually.
(cond ((eval-when-compile (< emacs-major-version 31))
(let* ((x-width (string-pixel-width (substring text 0 1)))
(char-limit 2)
(pixel-limit (* char-limit x-width)))
(should (eq
char-limit
(length (vtable--limit-string text pixel-limit))))))
(t
(let* ((x-width (string-pixel-width (substring text 0 1) (current-buffer)))
(char-limit 2)
(pixel-limit (* char-limit x-width)))
(should (eq
char-limit
(length (vtable--limit-string text pixel-limit (current-buffer)))))))))))
;;; vtable-tests.el ends here
|
