From 0aa85dd219f4be8dbf3383661fd2b42370945b87 Mon Sep 17 00:00:00 2001 From: Craig Jennings Date: Sun, 21 Jun 2026 03:19:08 -0400 Subject: 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. --- tests/test-video-audio-recording-ffmpeg-functions.el | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tests/test-video-audio-recording-ffmpeg-functions.el') diff --git a/tests/test-video-audio-recording-ffmpeg-functions.el b/tests/test-video-audio-recording-ffmpeg-functions.el index 549aa317f..4b3570a26 100644 --- a/tests/test-video-audio-recording-ffmpeg-functions.el +++ b/tests/test-video-audio-recording-ffmpeg-functions.el @@ -190,7 +190,7 @@ (setq cj/video-recording-ffmpeg-process fake-process) (cl-letf (((symbol-function 'cj/recording--wayland-p) (lambda () nil)) ((symbol-function 'signal-process) - (lambda (_pid _sig) (setq signal-called t) 0)) + (lambda (_pid _sig &rest _) (setq signal-called t) 0)) ((symbol-function 'cj/recording--wait-for-exit) (lambda (_proc _timeout) t))) (cj/video-recording-stop) @@ -231,7 +231,7 @@ (signal-called nil)) (setq cj/audio-recording-ffmpeg-process fake-process) (cl-letf (((symbol-function 'signal-process) - (lambda (_pid _sig) (setq signal-called t) 0)) + (lambda (_pid _sig &rest _) (setq signal-called t) 0)) ((symbol-function 'cj/recording--wait-for-exit) (lambda (_proc _timeout) t))) (cj/audio-recording-stop) @@ -287,7 +287,7 @@ (setq cj/video-recording-ffmpeg-process fake-process) (cl-letf (((symbol-function 'cj/recording--wayland-p) (lambda () nil)) ((symbol-function 'signal-process) - (lambda (_pid _sig) (error "Signal failed")))) + (lambda (_pid _sig &rest _) (error "Signal failed")))) (condition-case _err (cj/video-recording-stop) (error (setq error-raised t))) @@ -303,7 +303,7 @@ (error-raised nil)) (setq cj/audio-recording-ffmpeg-process fake-process) (cl-letf (((symbol-function 'signal-process) - (lambda (_pid _sig) (error "Signal failed")))) + (lambda (_pid _sig &rest _) (error "Signal failed")))) (condition-case _err (cj/audio-recording-stop) (error (setq error-raised t))) -- cgit v1.2.3