Add tests for chime-environment-regex

Verify the regex matches all default variable names, picks up
additional user-configured regexes, and handles empty additional list.

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/test-chime-environment-regex.el b/tests/test-chime-environment-regex.el
new file mode 100644
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+++ b/tests/test-chime-environment-regex.el
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+;;; test-chime-environment-regex.el --- Tests for chime-environment-regex -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2026 Craig Jennings
+
+;; Author: Craig Jennings <c@cjennings.net>
+
+;; This program 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.
+
+;; This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Unit tests for chime-environment-regex function.
+;; This function generates the regex used by async-inject-variables to
+;; copy chime's config into the async subprocess.
+
+;;; Code:
+
+(require 'test-bootstrap (expand-file-name "test-bootstrap.el"))
+
+;;; Normal Cases
+
+(ert-deftest test-chime-environment-regex-matches-default-variables ()
+  "The generated regex should match all default chime variable names."
+  (let ((regex (chime-environment-regex))
+        (chime-additional-environment-regexes nil))
+    (dolist (var '("org-agenda-files" "load-path" "org-todo-keywords"
+                   "chime-alert-intervals" "chime-keyword-whitelist"
+                   "chime-keyword-blacklist" "chime-tags-whitelist"
+                   "chime-tags-blacklist" "chime-predicate-whitelist"
+                   "chime-predicate-blacklist"))
+      (should (string-match-p regex var)))))
+
+(ert-deftest test-chime-environment-regex-includes-additional-regexes ()
+  "With additional regexes configured, the result should match those too."
+  (let ((chime-additional-environment-regexes '("my-custom-var")))
+    (let ((regex (chime-environment-regex)))
+      ;; Should still match defaults
+      (should (string-match-p regex "org-agenda-files"))
+      ;; Should also match the custom variable
+      (should (string-match-p regex "my-custom-var")))))
+
+;;; Boundary Cases
+
+(ert-deftest test-chime-environment-regex-empty-additional-list ()
+  "Empty additional regexes list should produce a valid regex matching defaults."
+  (let ((chime-additional-environment-regexes nil))
+    (let ((regex (chime-environment-regex)))
+      (should (stringp regex))
+      (should (string-match-p regex "chime-alert-intervals")))))
+
+(provide 'test-chime-environment-regex)
+;;; test-chime-environment-regex.el ends here