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authorCraig Jennings <c@cjennings.net>2026-06-21 03:19:08 -0400
committerCraig Jennings <c@cjennings.net>2026-06-21 03:19:08 -0400
commita249e415c7199e3d4698f1956687fa351296a357 (patch)
treebdc9efadba60e08a43a5f687110fe12651172525 /tests/test-prog-webdev-setup.el
parenta8571effadacd6f94291bfd57b7e58900a2e5816 (diff)
downloaddotemacs-a249e415c7199e3d4698f1956687fa351296a357.tar.gz
dotemacs-a249e415c7199e3d4698f1956687fa351296a357.zip
test: make subr mocks variadic for native-comp, add arity meta-test
Re-enabling native-comp surfaced a suite-wide fragility. When a test redefines a C primitive (or a native-compiled function), native-comp routes native callers through a trampoline that calls the mock with the primitive's maximum arity. A fixed-arity mock narrower than the primitive then throws wrong-number-of-arguments, intermittently, as the eln-cache fills. I swept every arity-narrow subr mock to append &rest _ (188 sites, preserving any named args the body uses), and added tests/test-meta-subr-mock-arity.el, which fails make test on any subr mock too narrow for the primitive's arity. The rule isn't "never mock a subr". The suite mocks message and completing-read freely. It's "a subr mock must accept the primitive's arity." Background, the three failure modes, and the research are in docs/native-comp-subr-mocking.org.
Diffstat (limited to 'tests/test-prog-webdev-setup.el')
-rw-r--r--tests/test-prog-webdev-setup.el4
1 files changed, 2 insertions, 2 deletions
diff --git a/tests/test-prog-webdev-setup.el b/tests/test-prog-webdev-setup.el
index 45310f23..906a5415 100644
--- a/tests/test-prog-webdev-setup.el
+++ b/tests/test-prog-webdev-setup.el
@@ -67,7 +67,7 @@ electric-pair-local-mode all get called."
((symbol-function 'lsp-deferred)
(lambda (&rest _) (setq started t)))
((symbol-function 'executable-find)
- (lambda (path) (when (equal path ts-language-server-path)
+ (lambda (path &rest _) (when (equal path ts-language-server-path)
"/usr/bin/typescript-language-server"))))
(cj/webdev-setup))
(should started))))
@@ -82,7 +82,7 @@ electric-pair-local-mode all get called."
((symbol-function 'electric-pair-local-mode) #'ignore)
((symbol-function 'lsp-deferred)
(lambda (&rest _) (setq started t)))
- ((symbol-function 'executable-find) (lambda (_) nil)))
+ ((symbol-function 'executable-find) (lambda (_ &rest _) nil)))
(cj/webdev-setup))
(should-not started))))