feat(calendar-sync): add event details — attendees, organizer, status, URL

Add ICS text unescaping (RFC 5545), HTML stripping, and new fields
(attendees/status, organizer, meeting URL) to calendar-sync.el.
event-to-org now outputs org property drawers. 88 new tests across
10 test files, 146/146 pass. Also fix pre-existing test require
order and keymap guard issues.

1 files changed, 79 insertions, 0 deletions

diff --git a/tests/test-calendar-sync--unescape-ics-text.el b/tests/test-calendar-sync--unescape-ics-text.el
new file mode 100644
index 00000000..a83e97d3
--- /dev/null
+++ b/tests/test-calendar-sync--unescape-ics-text.el
@@ -0,0 +1,79 @@
+;;; test-calendar-sync--unescape-ics-text.el --- Tests for ICS text unescaping  -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Unit tests for calendar-sync--unescape-ics-text function.
+;; RFC 5545 defines escape sequences: \n→newline, \,→comma, \\→backslash, \;→semicolon.
+;; Covers Normal, Boundary, and Error cases.
+
+;;; Code:
+
+(require 'ert)
+(require 'testutil-calendar-sync)
+(require 'calendar-sync)
+
+;;; Normal Cases
+
+(ert-deftest test-calendar-sync--unescape-ics-text-normal-newline ()
+  "Test \\n escape is converted to actual newline."
+  (should (string= "line1\nline2"
+                    (calendar-sync--unescape-ics-text "line1\\nline2"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-normal-comma ()
+  "Test \\, escape is converted to comma."
+  (should (string= "one, two"
+                    (calendar-sync--unescape-ics-text "one\\, two"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-normal-backslash ()
+  "Test \\\\ escape is converted to single backslash."
+  (should (string= "path\\file"
+                    (calendar-sync--unescape-ics-text "path\\\\file"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-normal-semicolon ()
+  "Test \\; escape is converted to semicolon."
+  (should (string= "a;b"
+                    (calendar-sync--unescape-ics-text "a\\;b"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-normal-mixed ()
+  "Test multiple different escapes in one string."
+  (should (string= "Hello, World\nPath\\to;file"
+                    (calendar-sync--unescape-ics-text "Hello\\, World\\nPath\\\\to\\;file"))))
+
+;;; Boundary Cases
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-empty-string ()
+  "Test empty string returns empty string."
+  (should (string= "" (calendar-sync--unescape-ics-text ""))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-no-escapes ()
+  "Test string with no escapes passes through unchanged."
+  (should (string= "plain text"
+                    (calendar-sync--unescape-ics-text "plain text"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-escape-at-start ()
+  "Test escape sequence at string start."
+  (should (string= "\nfoo"
+                    (calendar-sync--unescape-ics-text "\\nfoo"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-escape-at-end ()
+  "Test escape sequence at string end."
+  (should (string= "foo\n"
+                    (calendar-sync--unescape-ics-text "foo\\n"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-consecutive-escapes ()
+  "Test consecutive escape sequences."
+  (should (string= "\n\n"
+                    (calendar-sync--unescape-ics-text "\\n\\n"))))
+
+(ert-deftest test-calendar-sync--unescape-ics-text-boundary-only-escapes ()
+  "Test string composed entirely of escapes."
+  (should (string= ",;\n\\"
+                    (calendar-sync--unescape-ics-text "\\,\\;\\n\\\\"))))
+
+;;; Error Cases
+
+(ert-deftest test-calendar-sync--unescape-ics-text-error-nil-input ()
+  "Test nil input returns nil."
+  (should (null (calendar-sync--unescape-ics-text nil))))
+
+(provide 'test-calendar-sync--unescape-ics-text)
+;;; test-calendar-sync--unescape-ics-text.el ends here