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|
;;; llama-tests.el --- Tests for Llama -*- lexical-binding:t -*-
;; Copyright (C) 2020-2025 Jonas Bernoulli
;; Authors: Jonas Bernoulli <emacs.llama@jonas.bernoulli.dev>
;; Homepage: https://github.com/tarsius/llama
;; Keywords: extensions
;; SPDX-License-Identifier: GPL-3.0-or-later
;; This file is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published
;; by the Free Software Foundation, either version 3 of the License,
;; or (at your option) any later version.
;;
;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this file. If not, see <https://www.gnu.org/licenses/>.
;;; Code:
(require 'llama)
(ert-deftest llama-test-101-basic nil
(should (equal (##list %1)
(lambda (%1)
(list %1))))
(should (equal (##list %1 %1)
(lambda (%1)
(list %1 %1))))
(should (equal (##list %1 %2)
(lambda (%1 %2)
(list %1 %2))))
(should (equal (##list %2 %1)
(lambda (%1 %2)
(list %2 %1))))
(should (equal (##list 'const %1)
(lambda ( %1)
(list 'const %1))))
(should (equal (##list %1 'const)
(lambda (%1)
(list %1 'const))))
(should (equal (##list %1 'const %2)
(lambda (%1 %2)
(list %1 'const %2))))
(should (equal (##list %2 'const %1)
(lambda (%1 %2)
(list %2 'const %1))))
(should (equal (##list %1 %2 %3 %4 %5 %6 %7 %8 %9)
(lambda (%1 %2 %3 %4 %5 %6 %7 %8 %9)
(list %1 %2 %3 %4 %5 %6 %7 %8 %9))))
(should (equal (##list %1 %2 %1 %3 %5 %4 %6 %7 %9 %8)
(lambda (%1 %2 %3 %4 %5 %6 %7 %8 %9)
(list %1 %2 %1 %3 %5 %4 %6 %7 %9 %8))))
)
(ert-deftest llama-test-102-basic-optional nil
(should (equal (##list &1)
(lambda (&optional &1)
(list &1))))
(should (equal (##list %1 &2)
(lambda (%1 &optional &2)
(list %1 &2))))
(should (equal (##list %2 %1 &4 &3)
(lambda ( %1 %2 &optional &3 &4)
(list %2 %1 &4 &3))))
)
(ert-deftest llama-test-103-basic-rest nil
(should (equal (##list &*)
(lambda (&rest &*)
(list &*))))
(should (equal (##list %1 &*)
(lambda (%1 &rest &*)
(list %1 &*))))
(should (equal (##list %1 &2 &*)
(lambda (%1 &optional &2 &rest &*)
(list %1 &2 &*))))
)
(ert-deftest llama-test-104-basic-nested nil
(should (equal (##list (##list %) %1)
(lambda (%1)
(list (lambda (%) (list %))
%1))))
)
(ert-deftest llama-test-105-basic-nil nil
(should (equal (##list (##list %) %1)
(lambda (%1)
(list (lambda (%) (list %))
%1))))
)
(ert-deftest llama-test-201-unused-implicit-mandatory nil
(should (equal (##list %2)
(lambda (_%1 %2)
(list %2))))
(should (equal (##list %2 %3)
(lambda (_%1 %2 %3)
(list %2 %3))))
(should (equal (##list %3)
(lambda (_%1 _%2 %3)
(list %3))))
(should (equal (##list %1 %3)
(lambda (%1 _%2 %3)
(list %1 %3))))
(should (equal (##list %3 %6)
(lambda (_%1 _%2 %3 _%4 _%5 %6)
(list %3 %6))))
)
(ert-deftest llama-test-202-unused-implicit-optional nil
(should (equal (##list &2)
(lambda (&optional _&1 &2)
(list &2))))
(should (equal (##list &2 &3)
(lambda (&optional _&1 &2 &3)
(list &2 &3))))
(should (equal (##list &3)
(lambda (&optional _&1 _&2 &3)
(list &3))))
(should (equal (##list &1 &3)
(lambda (&optional &1 _&2 &3)
(list &1 &3))))
(should (equal (##list &3 &6)
(lambda (&optional _&1 _&2 &3 _&4 _&5 &6)
(list &3 &6))))
)
(ert-deftest llama-test-203-unused-implicit-mixed nil
(should (equal (##list %1 &3)
(lambda (%1 &optional _&2 &3)
(list %1 &3))))
(should (equal (##list %1 &4)
(lambda (%1 &optional _&2 _&3 &4)
(list %1 &4))))
(should (equal (##list %1 %2 &4)
(lambda (%1 %2 &optional _&3 &4)
(list %1 %2 &4))))
(should (equal (##list %2 &4 &6)
(lambda (_%1 %2 &optional _&3 &4 _&5 &6)
(list %2 &4 &6))))
)
(ert-deftest llama-test-301-unused-explicit-trailing nil
(should (equal (##list _%1)
(lambda (_%1)
(list))))
(should (equal (##list _%2)
(lambda (_%1 _%2)
(list))))
(should (equal (##list %1 _%2)
(lambda (%1 _%2)
(list %1))))
(should (equal (##list %1 _%3)
(lambda (%1 _%2 _%3)
(list %1))))
)
(ert-deftest llama-test-302-unused-explicit-border nil
(should (equal (##list _%1 &2)
(lambda (_%1 &optional &2)
(list &2))))
(should (equal (##list _%2 &3)
(lambda (_%1 _%2 &optional &3)
(list &3))))
(should (equal (##list %1 _%2 &3)
(lambda (%1 _%2 &optional &3)
(list %1 &3))))
(should (equal (##list %1 _%2 &4)
(lambda (%1 _%2 &optional _&3 &4)
(list %1 &4))))
(should (equal (##list %1 _%3 &6)
(lambda (%1 _%2 _%3 &optional _&4 _&5 &6)
(list %1 &6))))
)
(ert-deftest llama-test-303-unused-redundant nil
(should (equal (##list _%1 %2)
(lambda (_%1 %2)
(list %2))))
(should (equal (##list _&1 &2)
(lambda (&optional _&1 &2)
(list &2))))
)
(ert-deftest llama-test-401-abbrev nil
;; llama-test-101-basic(s/%1/%/)
(should (equal (##list %)
(lambda (%)
(list %))))
(should (equal (##list % %)
(lambda (%)
(list % %))))
(should (equal (##list % %2)
(lambda (% %2)
(list % %2))))
(should (equal (##list %2 %)
(lambda (% %2)
(list %2 %))))
(should (equal (##list 'const %)
(lambda ( %)
(list 'const %))))
(should (equal (##list % 'const)
(lambda (%)
(list % 'const))))
(should (equal (##list % 'const %2)
(lambda (% %2)
(list % 'const %2))))
(should (equal (##list %2 'const %)
(lambda (% %2)
(list %2 'const %))))
(should (equal (##list % %2 %3 %4 %5 %6 %7 %8 %9)
(lambda (% %2 %3 %4 %5 %6 %7 %8 %9)
(list % %2 %3 %4 %5 %6 %7 %8 %9))))
(should (equal (##list % %2 % %3 %5 %4 %6 %7 %9 %8)
(lambda (% %2 %3 %4 %5 %6 %7 %8 %9)
(list % %2 % %3 %5 %4 %6 %7 %9 %8))))
)
(ert-deftest llama-test-402-abbrev-optional nil
;; llama-test-102-basic-optional(s/&1/&/)
(should (equal (##list &1)
(lambda (&optional &1)
(list &1))))
(should (equal (##list % &2)
(lambda (% &optional &2)
(list % &2))))
(should (equal (##list %2 % &4 &3)
(lambda ( % %2 &optional &3 &4)
(list %2 % &4 &3))))
)
(ert-deftest llama-test-501-function-position nil
(should (equal (##+ (% %2 2) %1)
(lambda (%1 %2)
(+ (% %2 2) %1))))
(should (equal (##+ (* %2 2) %)
(lambda (% %2)
(+ (* %2 2) %))))
(should (equal (##% %2 2)
(lambda (_%1 %2)
(% %2 2))))
(should (equal (##* %1 2)
(lambda (%1)
(* %1 2))))
(should (equal (##% %2 %1)
(lambda (%1 %2)
(% %2 %1))))
)
(defmacro llama-test--flatten (expr)
(when (vectorp expr)
(setq expr (mapcan (lambda (e)
(if (vectorp e) (append e ()) (list e)))
(append expr ()))))
(let ((body ()))
(while expr
(if (listp expr) (push (pop expr) body) (push expr body) (setq expr nil)))
(cons 'list (nreverse body))))
(ert-deftest llama-test-502-vector nil
;; Real world example: (##-let [val %1] ...).
(should (equal (##llama-test--flatten [[1 %1]])
(lambda (%1)
(llama-test--flatten [[1 %1]]))))
(should (equal (##llama-test--flatten [%2 [%1]])
(lambda (%1 %2)
(llama-test--flatten [%2 [%1]]))))
(should (equal (##llama-test--flatten [%1 _%2 %3])
(lambda (%1 _%2 %3)
(llama-test--flatten [%1 %3]))))
)
(ert-deftest llama-test-502-dotted nil
;; Real world example: ???.
(should (equal (##llama-test--flatten (%1 . %2))
(lambda (%1 %2)
(llama-test--flatten (%1 . %2)))))
(should (equal (##llama-test--flatten (%1 %2 . %3))
(lambda (%1 %2 %3)
(llama-test--flatten (%1 %2 . %3)))))
(should (equal (##llama-test--flatten (%1 _%2 . %3))
(lambda (%1 _%2 %3)
(llama-test--flatten (%1 . %3)))))
(should (equal (##llama-test--flatten (%1 _%2 %3 . %4))
(lambda (%1 _%2 %3 %4)
(llama-test--flatten (%1 %3 . %4)))))
)
(ert-deftest llama-test-503-quoted nil
(should (equal (##cons %1 '(%2))
(lambda (%1)
(cons %1 '(%2)))))
)
(ert-deftest llama-test-504-backquoted nil
(should (equal (##list `(,%1 %2 ,%3))
(lambda (%1 _%2 %3)
(list `(,%1 %2 ,%3)))))
(should (equal (##list `(,%1 %2 (,%3) ,%4 . ,%5))
(lambda (%1 _%2 %3 %4 %5)
(list `(,%1 %2 (,%3) ,%4 . ,%5)))))
(should (equal (##`(,%1 %2 ,%3))
(lambda (%1 _%2 %3)
`(,%1 %2 ,%3))))
(should (equal (##`(,%1 %2 (,%3) ,%4 . ,%5))
(lambda (%1 _%2 %3 %4 %5)
`(,%1 %2 (,%3) ,%4 . ,%5))))
(should (equal (##list `(,% ,@% %))
(lambda (%)
(list `(,% ,@% %)))))
(should (equal (##list `(% ,%2))
(lambda (_%1 %2)
(list `(% ,%2)))))
(should (equal (##list `(,@%1 %2 ,%3 (,@%3 ,%1)))
(lambda (%1 _%2 %3)
(list `(,@%1 %2 ,%3 (,@%3 ,%1))))))
)
(ert-deftest llama-test-701-llama nil
(should (equal (llama list %1)
(lambda (%1)
(list %1))))
(should (equal (llama list %1 %1)
(lambda (%1)
(list %1 %1))))
(should (equal (llama list %1 %2)
(lambda (%1 %2)
(list %1 %2))))
(should (equal (llama list %1 (llama list %))
(lambda (%1)
(list %1 (lambda (%) (list %))))))
)
(ert-deftest llama-test-901-errors-first nil
(should-error (##list %1 &1))
(should-error (##list &1 %1))
(should-error (##list %1 _%1))
(should-error (##list _%1 %1))
(should-error (##list %1 _&1))
(should-error (##list _&1 %1))
(should-error (##list %1 %1 &1))
)
(ert-deftest llama-test-801-ambiguity nil
;; We cannot know how every special form and macro uses its arguments,
;; and can therefore not always do the right thing™. However, whatever
;; we end up doing, font-lock should agree. Here are some noteworthy
;; examples where our macro expansion and our font-lock agree, but the
;; author might have intended something else.
(static-if (>= emacs-major-version 28) ; prevent compiler warnings
(with-no-warnings ; unused arguments
;; A good example of what we might not want and theoretically could
;; prevent. However, this can also be prevented by just not going
;; out of our way to wander into ambiguous territory. While not
;; impossible, it is unlikely that someone does this accidentally.
(should (equal (##setq % 1)
(lambda (%)
(setq % 1))))
;; We have to fake `-setq' because we don't want to depend on `dash'
;; and because (equal (lambda () (-setq a 1)) (lambda () (-setq a 1)))
;; is never true because `-setq' uses `make-symbol'. Mocking that
;; macro does *not* affect the expansion of `##' into a `lambda'.
(cl-macrolet ((-setq (&rest args) `'(,@args)))
(should (equal (##-setq % 1)
(lambda (%)
(-setq % 1))))
(should (equal (##-setq (%) '(1))
(lambda ()
(-setq (%) '(1)))))
(should (equal (##-setq [(%)] [(1)])
(lambda ()
(-setq [(%)] [(1)]))))
(should (equal (##-setq [(% %)] [(1 2)])
(lambda (%)
(-setq [(% %)] [(1 2)]))))
(should (equal (##-setq [(%1)] [(1)])
(lambda (%1)
(-setq [(%1)] [(1)]))))))
))
(ert-deftest llama-test-902-errors-second nil
(should-error (##list %2 &2))
(should-error (##list &2 %2))
(should-error (##list %2 _%2))
(should-error (##list _%2 %2))
(should-error (##list %2 _&2))
(should-error (##list _&2 %2))
(should-error (##list %2 %2 &2))
)
(ert-deftest llama-test-903-errors-abbrev nil
(should-error (##list % &))
(should-error (##list & %))
(should-error (##list % _%))
(should-error (##list _% %))
(should-error (##list % _&))
(should-error (##list _& %))
(should-error (##list % % &))
(should-error (##list % %1))
(should-error (##list % _%1))
(should-error (##list % &1))
(should-error (##list % _&1))
(should-error (##list %1 %))
)
(ert-deftest llama-test-904-errors-syntax nil
;; ((lambda (%) (+ 1 %)) 2)
;; results in
;; Warning: Use of deprecated ((lambda (%) ...) ...) form
;; but works.
;; ((##+ 1 %) 2)
;; results at compile-time in
;; Warning: Malformed function ‘(## + 1 %)’
;; results at run-time in
;; Error: invalid-function ((## + 1 %))
;; and cannot possibly work.
;; Delay macro-expansion for demonstration purposes.
(should-error (eval '((##+ 1 %) 2)))
;; This is what one should be doing instead.
(should (equal (funcall (lambda (%) (+ 1 %)) 2) 3))
(should (equal (funcall (## + 1 %) 2) 3))
)
;; Local Variables:
;; eval: (prettify-symbols-mode -1)
;; indent-tabs-mode: nil
;; End:
;;; llama-tests.el ends here
|
