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| author | Craig Jennings <c@cjennings.net> | 2026-06-21 03:19:08 -0400 |
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| committer | Craig Jennings <c@cjennings.net> | 2026-06-21 03:19:08 -0400 |
| commit | 571da4996f84d96f6a8a73e6ca6844bfe2ca07ab (patch) | |
| tree | 57dd1cfb4db739ef77c3b40902b6719c1913fc30 /tests/test-dirvish-config-print.el | |
| parent | 0805df5e6ac5aa4972600bbe3c01ec3d3c166592 (diff) | |
| download | dotemacs-571da4996f84d96f6a8a73e6ca6844bfe2ca07ab.tar.gz dotemacs-571da4996f84d96f6a8a73e6ca6844bfe2ca07ab.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-dirvish-config-print.el')
| -rw-r--r-- | tests/test-dirvish-config-print.el | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tests/test-dirvish-config-print.el b/tests/test-dirvish-config-print.el index ab6d073f0..308d00f68 100644 --- a/tests/test-dirvish-config-print.el +++ b/tests/test-dirvish-config-print.el @@ -50,18 +50,18 @@ (ert-deftest test-dirvish-print-program-prefers-lp () "Normal: `lp' is used when available." (cl-letf (((symbol-function 'executable-find) - (lambda (cmd) (when (equal cmd "lp") "/usr/bin/lp")))) + (lambda (cmd &rest _) (when (equal cmd "lp") "/usr/bin/lp")))) (should (equal (cj/--print-program) "/usr/bin/lp")))) (ert-deftest test-dirvish-print-program-falls-back-to-lpr () "Boundary: `lpr' is used when `lp' is missing." (cl-letf (((symbol-function 'executable-find) - (lambda (cmd) (when (equal cmd "lpr") "/usr/bin/lpr")))) + (lambda (cmd &rest _) (when (equal cmd "lpr") "/usr/bin/lpr")))) (should (equal (cj/--print-program) "/usr/bin/lpr")))) (ert-deftest test-dirvish-print-program-none-available () "Error: nil when neither `lp' nor `lpr' is on PATH." - (cl-letf (((symbol-function 'executable-find) (lambda (_cmd) nil))) + (cl-letf (((symbol-function 'executable-find) (lambda (_cmd &rest _) nil))) (should-not (cj/--print-program)))) ;;; ---------------------------- cj/dirvish-print-file ------------------------- |