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-rw-r--r--tests/test-flycheck-config-ledger-hook.el31
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diff --git a/tests/test-flycheck-config-ledger-hook.el b/tests/test-flycheck-config-ledger-hook.el
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+;;; test-flycheck-config-ledger-hook.el --- flycheck reaches ledger buffers -*- lexical-binding: t; -*-
+
+;;; Commentary:
+;; `flycheck-ledger' registers a `ledger' checker, but a checker only runs where
+;; `flycheck-mode' is on. Until 2026-07-10 flycheck-config enabled the mode in
+;; `sh-mode' and `emacs-lisp-mode' only, and no `global-flycheck-mode' existed, so
+;; an unbalanced transaction in a ledger file produced no warning at all.
+;;
+;; These tests pin the hook, not the checker. Whether the `ledger' checker itself
+;; works is flycheck-ledger's problem; whether it ever gets a chance to run is ours.
+
+;;; Code:
+
+(require 'ert)
+
+(add-to-list 'load-path (expand-file-name "modules" user-emacs-directory))
+(require 'flycheck-config)
+
+(ert-deftest test-flycheck-config-enables-flycheck-in-ledger-buffers ()
+ "Normal: opening a ledger buffer turns `flycheck-mode' on.
+Without this, `flycheck-ledger' is loaded, its checker is registered, and
+nothing ever lints a financial file."
+ (should (memq #'flycheck-mode (default-value 'ledger-mode-hook))))
+
+(ert-deftest test-flycheck-config-keeps-its-existing-mode-hooks ()
+ "Boundary: adding ledger doesn't displace the modes flycheck already covered."
+ (should (memq #'flycheck-mode (default-value 'sh-mode-hook)))
+ (should (memq #'flycheck-mode (default-value 'emacs-lisp-mode-hook))))
+
+(provide 'test-flycheck-config-ledger-hook)
+;;; test-flycheck-config-ledger-hook.el ends here