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authorCraig Jennings <c@cjennings.net>2025-11-14 02:31:16 -0600
committerCraig Jennings <c@cjennings.net>2025-11-14 02:31:16 -0600
commit9d55ed149e100b4fb3ef6f5a79d263dcb26ce835 (patch)
treeb02a77b84849f15b4302fda8f3f8e3942cb253ac /tests/test-custom-whitespace-collapse.el
parent7b982b1984dd37af42a2dfc9f4c3e52b27102860 (diff)
checking in modified/removed tests and other misc changes
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-;;; test-custom-whitespace-collapse.el --- Tests for cj/--collapse-whitespace -*- lexical-binding: t; -*-
-
-;;; Commentary:
-;; Tests for the cj/--collapse-whitespace function from custom-whitespace.el
-;;
-;; This function collapses whitespace in text by:
-;; - Converting all tabs to spaces
-;; - Removing leading and trailing whitespace
-;; - Collapsing multiple consecutive spaces to single space
-;; - Preserving newlines and text structure
-;;
-;; We test the NON-INTERACTIVE implementation (cj/--collapse-whitespace)
-;; to avoid mocking region selection. This follows our testing best practice
-;; of separating business logic from UI interaction.
-
-;;; Code:
-
-(require 'ert)
-(require 'testutil-general)
-
-;; Add modules directory to load path
-(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
-
-;; Stub dependencies before loading the module
-(defvar cj/custom-keymap (make-sparse-keymap)
- "Stub keymap for testing.")
-
-;; Now load the actual production module
-(require 'custom-whitespace)
-
-;;; Test Helpers
-
-(defun test-collapse-whitespace (input-text)
- "Test cj/--collapse-whitespace on INPUT-TEXT.
-Returns the buffer string after operation."
- (with-temp-buffer
- (insert input-text)
- (cj/--collapse-whitespace (point-min) (point-max))
- (buffer-string)))
-
-;;; Normal Cases
-
-(ert-deftest test-collapse-whitespace-multiple-spaces ()
- "Should collapse multiple spaces to single space."
- (let ((result (test-collapse-whitespace "hello world")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-multiple-tabs ()
- "Should convert tabs to spaces and collapse."
- (let ((result (test-collapse-whitespace "hello\t\t\tworld")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-mixed-tabs-spaces ()
- "Should handle mixed tabs and spaces."
- (let ((result (test-collapse-whitespace "hello \t \t world")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-leading-trailing ()
- "Should remove leading and trailing whitespace."
- (let ((result (test-collapse-whitespace " hello world ")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-tabs-leading-trailing ()
- "Should remove leading and trailing tabs."
- (let ((result (test-collapse-whitespace "\t\thello world\t\t")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-multiple-words ()
- "Should collapse spaces between multiple words."
- (let ((result (test-collapse-whitespace "one two three four")))
- (should (string= result "one two three four"))))
-
-(ert-deftest test-collapse-whitespace-preserve-newlines ()
- "Should preserve newlines while collapsing spaces."
- (let ((result (test-collapse-whitespace "hello world\nfoo bar")))
- (should (string= result "hello world\nfoo bar"))))
-
-(ert-deftest test-collapse-whitespace-multiple-lines ()
- "Should handle multiple lines with various whitespace."
- (let ((result (test-collapse-whitespace " hello world \n\t\tfoo bar\t\t")))
- (should (string= result "hello world\nfoo bar"))))
-
-;;; Boundary Cases
-
-(ert-deftest test-collapse-whitespace-empty-string ()
- "Should handle empty string."
- (let ((result (test-collapse-whitespace "")))
- (should (string= result ""))))
-
-(ert-deftest test-collapse-whitespace-single-char ()
- "Should handle single character with surrounding spaces."
- (let ((result (test-collapse-whitespace " x ")))
- (should (string= result "x"))))
-
-(ert-deftest test-collapse-whitespace-only-whitespace ()
- "Should handle text with only whitespace (becomes empty)."
- (let ((result (test-collapse-whitespace " \t \t ")))
- (should (string= result ""))))
-
-(ert-deftest test-collapse-whitespace-no-extra-whitespace ()
- "Should handle text with no extra whitespace (no-op)."
- (let ((result (test-collapse-whitespace "hello world")))
- (should (string= result "hello world"))))
-
-(ert-deftest test-collapse-whitespace-single-space ()
- "Should handle text with already-collapsed spaces (no-op)."
- (let ((result (test-collapse-whitespace "one two three")))
- (should (string= result "one two three"))))
-
-(ert-deftest test-collapse-whitespace-very-long-line ()
- "Should handle very long lines with many spaces."
- (let ((result (test-collapse-whitespace "word word word word word")))
- (should (string= result "word word word word word"))))
-
-(ert-deftest test-collapse-whitespace-multiple-newlines ()
- "Should preserve multiple newlines while removing spaces."
- (let ((result (test-collapse-whitespace "hello world\n\n\nfoo bar")))
- (should (string= result "hello world\n\n\nfoo bar"))))
-
-(ert-deftest test-collapse-whitespace-spaces-around-newlines ()
- "Should remove spaces before/after newlines."
- (let ((result (test-collapse-whitespace "hello \n world")))
- (should (string= result "hello\nworld"))))
-
-(ert-deftest test-collapse-whitespace-empty-lines ()
- "Should handle empty lines (lines become empty after whitespace removal)."
- (let ((result (test-collapse-whitespace "line1\n \nline2")))
- (should (string= result "line1\n\nline2"))))
-
-;;; Error Cases
-
-(ert-deftest test-collapse-whitespace-start-greater-than-end ()
- "Should error when start > end."
- (should-error
- (with-temp-buffer
- (insert "hello world")
- (cj/--collapse-whitespace (point-max) (point-min)))
- :type 'error))
-
-(ert-deftest test-collapse-whitespace-empty-region ()
- "Should handle empty region (start == end) without error."
- (with-temp-buffer
- (insert "hello world")
- (let ((pos (/ (+ (point-min) (point-max)) 2)))
- (cj/--collapse-whitespace pos pos)
- ;; Should complete without error and not change buffer
- (should (string= (buffer-string) "hello world")))))
-
-(provide 'test-custom-whitespace-collapse)
-;;; test-custom-whitespace-collapse.el ends here