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;;; test-tool-library-fs-filter-by-extension.el --- ERT tests for cj/fs-filter-by-extension -*- lexical-binding: t; -*-
;; Author: gptel-tool-writer and cjennings
;; Keywords: tests, filesystem, tools
;;; Commentary:
;; ERT tests for the cj/fs-filter-by-extension function from tool-filesystem-library.el.
;; Place this file in ~/.emacs.d/tests/ and load it to run tests.
;;; Code:
(require 'ert)
(require 'f)
(require 'tool-filesystem-library)
(defvar cj/fs-test--temp-dir nil "Temporary test directory for fs-filter-by-extension tests.")
(defun cj/fs-test--setup ()
"Set up temp directory for fs-filter-by-extension tests."
(setq cj/fs-test--temp-dir (make-temp-file "fs-lib-test" t))
;; Create files
(with-temp-buffer (insert "Org file") (write-file (f-join cj/fs-test--temp-dir "file1.org")))
(with-temp-buffer (insert "Txt file") (write-file (f-join cj/fs-test--temp-dir "file2.txt")))
(make-directory (f-join cj/fs-test--temp-dir "subdir") t))
(defun cj/fs-test--teardown ()
"Clean up temp directory for fs-filter-by-extension tests."
(when (and cj/fs-test--temp-dir (file-directory-p cj/fs-test--temp-dir))
(delete-directory cj/fs-test--temp-dir t))
(setq cj/fs-test--temp-dir nil))
(ert-deftest test-cj/fs-filter-by-extension-normal-match ()
"Normal: match single extension in list."
(cj/fs-test--setup)
(unwind-protect
(let* ((infos (mapcar #'cj/fs-get-file-info (cj/fs-directory-entries cj/fs-test--temp-dir)))
(filtered (cj/fs-filter-by-extension infos "org")))
(should (cl-some (lambda (fi) (string= (f-filename (plist-get fi :path)) "file1.org")) filtered))
(should-not (cl-some (lambda (fi) (string= (f-filename (plist-get fi :path)) "file2.txt")) filtered)))
(cj/fs-test--teardown)))
(ert-deftest test-cj/fs-filter-by-extension-normal-no-filter ()
"Normal: no extension filter returns full list."
(cj/fs-test--setup)
(unwind-protect
(let* ((infos (mapcar #'cj/fs-get-file-info (cj/fs-directory-entries cj/fs-test--temp-dir)))
(filtered (cj/fs-filter-by-extension infos nil)))
(should (= (length filtered) (length infos))))
(cj/fs-test--teardown)))
(ert-deftest test-cj/fs-filter-by-extension-error-empty-list ()
"Error: empty file info list handled."
(should (equal (cj/fs-filter-by-extension nil "org") nil)))
(ert-deftest test-cj/fs-filter-by-extension-boundary-mixed-files ()
"Boundary: mixed extensions and directories handled."
(cj/fs-test--setup)
(unwind-protect
(let* ((entries (cj/fs-directory-entries cj/fs-test--temp-dir))
(infos (mapcar #'cj/fs-get-file-info entries))
(filtered (cj/fs-filter-by-extension infos "org")))
(should (cl-some (lambda (fi) (plist-get fi :directory)) filtered))
(should (cl-some (lambda (fi) (string= (f-filename (plist-get fi :path)) "file1.org")) filtered))
(should-not (cl-some (lambda (fi) (string= (f-filename (plist-get fi :path)) "file2.txt")) filtered)))
(cj/fs-test--teardown)))
(provide 'test-tool-library-fs-filter-by-extension)
;;; test-tool-library-fs-filter-by-extension.el ends here
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