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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 | 0aa85dd219f4be8dbf3383661fd2b42370945b87 (patch) | |
| tree | 0ba557d43691666ad181c6ec3718a7d5e2a0cdee /tests/test-prog-yaml--yaml-format-buffer.el | |
| parent | 4a8c572ba6a64be997be072b44ef5ff62674d820 (diff) | |
| download | dotemacs-0aa85dd219f4be8dbf3383661fd2b42370945b87.tar.gz dotemacs-0aa85dd219f4be8dbf3383661fd2b42370945b87.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-yaml--yaml-format-buffer.el')
| -rw-r--r-- | tests/test-prog-yaml--yaml-format-buffer.el | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/tests/test-prog-yaml--yaml-format-buffer.el b/tests/test-prog-yaml--yaml-format-buffer.el index 28ad351f9..aae3199ce 100644 --- a/tests/test-prog-yaml--yaml-format-buffer.el +++ b/tests/test-prog-yaml--yaml-format-buffer.el @@ -14,7 +14,7 @@ (ert-deftest test-prog-yaml--yaml-format-buffer-invokes-prettier-argv () "Normal: with prettier present, the formatter calls it via argv, no shell." (let (program args) - (cl-letf (((symbol-function 'executable-find) (lambda (_p) "/usr/bin/prettier")) + (cl-letf (((symbol-function 'executable-find) (lambda (_p &rest _) "/usr/bin/prettier")) ((symbol-function 'call-process-region) (lambda (_start _end prog &rest rest) (setq program prog @@ -29,7 +29,7 @@ (ert-deftest test-prog-yaml--yaml-format-buffer-no-clobber-on-failure () "Error: a non-zero prettier exit leaves the buffer untouched and errors." - (cl-letf (((symbol-function 'executable-find) (lambda (_p) "/usr/bin/prettier")) + (cl-letf (((symbol-function 'executable-find) (lambda (_p &rest _) "/usr/bin/prettier")) ((symbol-function 'call-process-region) (lambda (_start _end _prog _delete buffer &rest _) (with-current-buffer buffer (insert "[error] bad yaml")) @@ -98,7 +98,7 @@ (ert-deftest test-prog-yaml--yaml-format-buffer-error-no-prettier () "Signals user-error when prettier is not found." - (cl-letf (((symbol-function 'executable-find) (lambda (_) nil))) + (cl-letf (((symbol-function 'executable-find) (lambda (_ &rest _) nil))) (with-temp-buffer (insert "key: value\n") (should-error (cj/yaml-format-buffer) :type 'user-error)))) |