diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/test-music-config--renumber-rows.el | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tests/test-music-config--renumber-rows.el b/tests/test-music-config--renumber-rows.el index a5304606..d5bc5141 100644 --- a/tests/test-music-config--renumber-rows.el +++ b/tests/test-music-config--renumber-rows.el @@ -165,6 +165,56 @@ selected -- the dock is glanced at from other windows constantly." (should (buffer-local-value 'hl-line-sticky-flag created))) (when (buffer-live-p created) (kill-buffer created)))))) +;;; Sticky header + +(ert-deftest test-music-stick-header-moves-overlay-to-window-start () + "Normal: a scroll re-anchors the header overlay at the new window start, +so the header block stays at the top of the window while the list scrolls." + (with-temp-buffer + (insert "track one\ntrack two\ntrack three\ntrack four\n") + (setq cj/music--header-overlay (make-overlay (point-min) (point-min))) + (save-window-excursion + (set-window-buffer (selected-window) (current-buffer)) + (let ((start (save-excursion (goto-char (point-min)) (forward-line 2) (point)))) + (cj/music--stick-header (selected-window) start) + (should (= (overlay-start cj/music--header-overlay) start)) + ;; Converges: the same start again is a no-op, not a loop. + (cj/music--stick-header (selected-window) start) + (should (= (overlay-start cj/music--header-overlay) start)))))) + +(ert-deftest test-music-stick-header-no-overlay-noop () + "Boundary: no header overlay yet -- the scroll handler is a silent no-op." + (with-temp-buffer + (insert "track one\n") + (setq cj/music--header-overlay nil) + (save-window-excursion + (set-window-buffer (selected-window) (current-buffer)) + (should-not (cj/music--stick-header (selected-window) (point-min)))))) + +(ert-deftest test-music-header-anchor-position-displayed-vs-not () + "Normal: the header anchors at the displaying window's start; an +undisplayed buffer anchors at the top." + (with-temp-buffer + (insert "track one\ntrack two\ntrack three\ntrack four\n") + (save-window-excursion + (set-window-buffer (selected-window) (current-buffer)) + (let ((start (save-excursion (goto-char (point-min)) (forward-line 2) (point)))) + (set-window-start (selected-window) start) + (should (= (cj/music--header-anchor-position) start)))) + ;; Not displayed after the excursion restores the old config. + (should (= (cj/music--header-anchor-position) (point-min))))) + +(ert-deftest test-music-ensure-playlist-buffer-wires-scroll-hook () + "Normal: the playlist buffer re-sticks its header on every window scroll." + (let (created) + (cl-letf (((symbol-function 'emms-playlist-mode) #'ignore)) + (unwind-protect + (progn + (setq created (cj/music--ensure-playlist-buffer)) + (with-current-buffer created + (should (member #'cj/music--stick-header window-scroll-functions)))) + (when (buffer-live-p created) (kill-buffer created)))))) + ;;; Hook wiring (ert-deftest test-music-renumber-ensure-playlist-buffer-wires-hook () |