test(org-noter-config): cover preferred-split, slug, template, predicates

Four new test files for the pure-and-near-pure helpers in
org-noter-config.el. The interactive heavyweights (cj/org-noter-start,
cj/org-noter-insert-note-dwim, cj/org-noter--toggle-notes-window,
cj/org-noter--find-notes-file, cj/org-noter--create-notes-file) are
out of scope for this pass — they need org-noter loaded and a real
session, or a substantial internal/wrapper split before they can be
tested without spinning up real PDFs and EPUBs.

- preferred-split: 5 tests walking the 1.4 width-to-height threshold
  from both sides plus a square-frame boundary.
- title-to-slug: 7 tests covering multi-word, single-word, mixed
  punctuation, leading/trailing junk, collapsed runs, digits, and
  empty input.
- generate-notes-template: 5 tests with org-id-uuid mocked, asserting
  the rendered template carries the UUID, the dual ROAM_REFS /
  NOTER_DOCUMENT pointers, the title-and-category lines, the
  ReadingNotes filetag, and the trailing Notes heading.
- predicates: 13 tests covering cj/org-noter--in-document-p,
  cj/org-noter--in-notes-file-p, cj/org-noter--session-active-p,
  cj/org-noter--get-document-path, and cj/org-noter--extract-document-title.
  Mocks derived-mode-p, org-entry-get, and buffer-file-name at the
  boundary so the suite doesn't require pdf-tools or nov.

The require chain in each test file is user-constants → keybindings →
org-noter-config because cj/org-noter-notes-directory captures
roam-dir from user-constants and the prefix-map binding at the bottom
of org-noter-config references cj/custom-keymap.

30 new tests, all passing. Full suite green.

1 files changed, 62 insertions, 0 deletions

diff --git a/tests/test-org-noter-config--generate-notes-template.el b/tests/test-org-noter-config--generate-notes-template.el
new file mode 100644
index 00000000..c4638fa7
--- /dev/null
+++ b/tests/test-org-noter-config--generate-notes-template.el
@@ -0,0 +1,62 @@
+;;; test-org-noter-config--generate-notes-template.el --- Tests for cj/org-noter--generate-notes-template -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; Tests for `cj/org-noter--generate-notes-template'. The function
+;; produces an org-roam-shaped buffer template with a generated UUID,
+;; ROAM_REFS / NOTER_DOCUMENT pointing at the document path, and the
+;; title in #+title and #+CATEGORY. `org-id-uuid' is mocked at the
+;; boundary so the test is deterministic.
+
+;;; Code:
+
+(require 'ert)
+(require 'cl-lib)
+
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'user-constants)
+(require 'keybindings)
+(require 'org-noter-config)
+
+(defmacro test-org-noter-config--with-uuid (uuid &rest body)
+  "Run BODY with `org-id-uuid' returning UUID."
+  (declare (indent 1) (debug t))
+  `(cl-letf (((symbol-function 'org-id-uuid) (lambda () ,uuid)))
+     ,@body))
+
+(ert-deftest test-org-noter-config-generate-template-includes-id-property ()
+  "Normal: template includes the supplied UUID in the :ID: property."
+  (test-org-noter-config--with-uuid "deadbeef-1234"
+    (let ((text (cj/org-noter--generate-notes-template
+                 "The Pragmatic Programmer" "/books/pragmatic.pdf")))
+      (should (string-match-p ":ID: deadbeef-1234" text)))))
+
+(ert-deftest test-org-noter-config-generate-template-roam-refs-and-noter-document ()
+  "Normal: ROAM_REFS and NOTER_DOCUMENT both point at the document path."
+  (test-org-noter-config--with-uuid "x"
+    (let ((text (cj/org-noter--generate-notes-template
+                 "Title" "/books/file.pdf")))
+      (should (string-match-p ":ROAM_REFS: /books/file\\.pdf" text))
+      (should (string-match-p ":NOTER_DOCUMENT: /books/file\\.pdf" text)))))
+
+(ert-deftest test-org-noter-config-generate-template-title-and-category ()
+  "Normal: #+title shows the title with prefix; #+CATEGORY uses the title."
+  (test-org-noter-config--with-uuid "x"
+    (let ((text (cj/org-noter--generate-notes-template
+                 "Anaphora Studies" "/x")))
+      (should (string-match-p "^#\\+title: Notes on Anaphora Studies$" text))
+      (should (string-match-p "^#\\+CATEGORY: Anaphora Studies$" text)))))
+
+(ert-deftest test-org-noter-config-generate-template-includes-readingnotes-tag ()
+  "Boundary: the FILETAGS line carries the :ReadingNotes: tag."
+  (test-org-noter-config--with-uuid "x"
+    (let ((text (cj/org-noter--generate-notes-template "T" "/x")))
+      (should (string-match-p "^#\\+FILETAGS: :ReadingNotes:$" text)))))
+
+(ert-deftest test-org-noter-config-generate-template-ends-with-notes-heading ()
+  "Boundary: the template ends with a top-level Notes heading."
+  (test-org-noter-config--with-uuid "x"
+    (let ((text (cj/org-noter--generate-notes-template "T" "/x")))
+      (should (string-match-p "\\* Notes\n\\'" text)))))
+
+(provide 'test-org-noter-config--generate-notes-template)
+;;; test-org-noter-config--generate-notes-template.el ends here