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| author | Craig Jennings <c@cjennings.net> | 2026-06-21 03:19:08 -0400 |
|---|---|---|
| committer | Craig Jennings <c@cjennings.net> | 2026-06-21 03:19:08 -0400 |
| commit | a249e415c7199e3d4698f1956687fa351296a357 (patch) | |
| tree | bdc9efadba60e08a43a5f687110fe12651172525 /tests/test-music-config-helpers-untested.el | |
| parent | a8571effadacd6f94291bfd57b7e58900a2e5816 (diff) | |
| download | dotemacs-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-music-config-helpers-untested.el')
| -rw-r--r-- | tests/test-music-config-helpers-untested.el | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tests/test-music-config-helpers-untested.el b/tests/test-music-config-helpers-untested.el index 4ba0940a..bfdb2634 100644 --- a/tests/test-music-config-helpers-untested.el +++ b/tests/test-music-config-helpers-untested.el @@ -113,7 +113,7 @@ test prelude inserts filler with `inhibit-read-only' bound." "Normal: when emms is already a feature, setup does not re-require." (let ((called nil)) (cl-letf (((symbol-function 'featurep) - (lambda (sym) (eq sym 'emms))) + (lambda (sym &rest _) (eq sym 'emms))) ((symbol-function 'require) (lambda (&rest _) (setq called t) t))) (cj/emms--setup)) @@ -123,7 +123,7 @@ test prelude inserts filler with `inhibit-read-only' bound." "Boundary: when emms isn't yet loaded, setup requires it." (let ((required nil)) (cl-letf (((symbol-function 'featurep) - (lambda (sym) (not (eq sym 'emms)))) + (lambda (sym &rest _) (not (eq sym 'emms)))) ((symbol-function 'require) (lambda (feat &rest _) (setq required feat) t))) (cj/emms--setup)) |