;;;; miscellaneous tests of LOOP-related stuff ;;;; This software is part of the SBCL system. See the README file for ;;;; more information. ;;;; ;;;; While most of SBCL is derived from the CMU CL system, the test ;;;; files (like this one) were written from scratch after the fork ;;;; from CMU CL. ;;;; ;;;; This software is in the public domain and is provided with ;;;; absolutely no warranty. See the COPYING and CREDITS files for ;;;; more information. (in-package "CL-USER") ;;; The bug reported by Alexei Dejneka on sbcl-devel 2001-09-03 ;;; is fixed now. (assert (equal (let ((hash (make-hash-table))) (setf (gethash 'key1 hash) 'val1) (setf (gethash 'key2 hash) 'val2) (sort (loop for key being each hash-key in hash collect key) #'string<)) '(key1 key2))) ;;; Bug 81, reported by Wolfhard Buss on cmucl-help 2001-02-14, was ;;; fixed by Alexey Dejneka's patch on sbcl-devel 2001-09-30. (assert (equal '(0.0 1.0 2.0 3.0) (loop with (a . b) of-type float = '(0.0 . 1.0) and (c . d) of-type float = '(2.0 . 3.0) return (list a b c d)))) ;;; a bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-05: ;;; The type declarations should apply, hence under Python's ;;; declarations-are-assertions rule, the code should signal a type ;;; error. (assert (typep (nth-value 1 (ignore-errors (funcall (lambda () (loop with (a . b) of-type float = '(5 . 5) return (list a b)))))) 'type-error)) ;;; bug 103, reported by Arthur Lemmens sbcl-devel 2001-05-05, ;;; fixed by Alexey Dejneka patch sbcl-devel 2001-10-05: ;;; LOOP syntax requires that forms after INITIALLY, FINALLY, and DO ;;; must be compound forms. (multiple-value-bind (function warnings-p failure-p) (compile nil '(lambda () (loop while t do *print-level* (print t)))) (declare (ignore function warnings-p)) (assert failure-p)) ;;; a bug reported by Paul F. Dietz (in his ANSI test suite): ;;; duplicate bindings in LOOP must signal errors of type ;;; PROGRAM-ERROR. (assert (typep (nth-value 1 (ignore-errors (funcall (lambda () (loop for (a . a) in '((1 . 2) (3 . 4)) return a))))) 'program-error)) ;;; similar to gcl/ansi-test LOOP.1.27, and fixed at the same time: (assert (equal (loop for x downto 7 by 2 from 13 collect x) '(13 11 9 7))) ;;; some more from gcl/ansi-test: (let ((table (make-hash-table))) (setf (gethash 'foo table) '(bar baz)) (assert (= (loop for nil being the hash-keys of table count t) 1)) (assert (equal (loop for nil being the hash-keys of table using (hash-value (v1 . v2)) when v1 return v2) '(baz)))) (assert (= (loop for nil being the external-symbols of :cl count t) 978)) (assert (= (loop for x being the external-symbols of :cl count x) 977)) (let ((*package* (find-package :cl))) (assert (= (loop for x being each external-symbol count t) 978))) (assert (eq (loop for a = (return t) return nil) t)) (multiple-value-bind (result error) (ignore-errors (loop for nil being the external-symbols of :nonexistent-package count t)) (assert (null result)) (assert (typep error 'package-error))) (assert (equal (loop for i from 1 repeat (the (integer 7 7) 7) collect i) '(1 2 3 4 5 6 7))) (multiple-value-bind (result error) (ignore-errors (eval '(loop for i from 1 repeat 7 of-type fixnum collect i))) (assert (null result)) (assert (typep error 'program-error))) (assert (equal (ignore-errors (loop for i from 1 repeat 6.5 collect i)) (ignore-errors (loop for i from 1 repeat (eval '6.5) collect i)))) (assert (eq (block nil (loop named foo do (loop-finish) finally (return :good)) :bad) :good)) (assert (= (loop with (a nil) = '(1 2) return a) 1)) (assert (= (loop with (nil a) = '(1 2) return a) 2)) (assert (= (loop with (a . nil) = '(1 2) return a) 1)) (assert (equal (loop with (nil . a) = '(1 2) return a) '(2))) (multiple-value-bind (result error) (ignore-errors (loop for i in '(1 2 3) collect i always (< i 4))) (assert (null result)) (assert (typep error 'program-error))) (assert (equal (loop for i in '(1 2 3) collect i into foo always (< i 4) finally (return foo)) '(1 2 3))) (assert (equal (loop for i in '(1 2 3) collect i into foo always (= i 4) finally (return foo)) nil)) (multiple-value-bind (result error) (ignore-errors (loop for i in '(1 2 3) always (< i 4) collect i)) (assert (null result)) (assert (typep error 'program-error))) (assert (equal (loop for i in '(1 2 3) always (< i 4) collect i into foo finally (return foo)) '(1 2 3))) (assert (equal (loop for i in '(1 2 3) always (= i 4) collect i into foo finally (return foo)) nil)) (multiple-value-bind (result error) (ignore-errors (loop for i in '(1 2 3) thereis (= i 3) collect i)) (assert (null result)) (assert (typep error 'program-error))) (multiple-value-bind (result error) (ignore-errors (loop with i = 1 for x from 1 to 3 collect x into i)) (assert (null result)) (assert (typep error 'program-error))) (multiple-value-bind (result error) ;; this one has a plausible interpretation in terms of LET*, but ;; ANSI seems specifically to disallow it (ignore-errors (loop with i = 1 with i = (1+ i) for x from 1 to 3 collect (+ x i))) (assert (null result)) (assert (typep error 'program-error))) (let ((it 'z)) (assert (equal ;; this one just seems weird. Nevertheless... (loop for i in '(a b c d) when i collect it and collect it) '(a z b z c z d z)))) (let ((ht (make-hash-table))) (setf (gethash 1 ht) 3) (setf (gethash 7 ht) 15) (assert (= (loop for v fixnum being each hash-key in ht sum v) 8)) (assert (= (loop for v fixnum being each hash-value in ht sum v) 18)) (assert (raises-error? (loop for v float being each hash-value in ht sum v) type-error))) ;; arithmetic indexes can be NIL or symbols. (assert (equal (loop for nil from 0 to 2 collect nil) '(nil nil nil))) (assert (equal (loop for nil to 2 collect nil) '(nil nil nil))) ;; although allowed by the loop syntax definition in 6.2/LOOP, ;; 6.1.2.1.1 says: "The variable var is bound to the value of form1 in ;; the first iteration[...]"; since we can't bind (i j) to anything, ;; we give a program error. (multiple-value-bind (function warnings-p failure-p) (compile nil `(lambda () (loop for (i j) from 4 to 6 collect nil))) (assert failure-p)) ;; ...and another for indexes without FROM forms (these are treated ;; differently by the loop code right now (multiple-value-bind (function warnings-p failure-p) (compile nil `(lambda () (loop for (i j) to 6 collect nil))) (assert failure-p)) (assert (equal (let ((x 2d0)) (loop for d of-type double-float from 0d0 to 10d0 by x collect d)) '(0d0 2d0 4d0 6d0 8d0 10d0))) (assert (equal (let ((x 2d0)) (loop for d of-type double-float downfrom 10d0 to 0d0 by x collect d)) '(10d0 8d0 6d0 4d0 2d0 0d0))) (let ((fn (handler-case (compile nil '(lambda () (declare (special x y)) (loop thereis (pop x) thereis (pop y)))) (warning (c) (error "Warned: ~S" c))))) (let ((x (list nil nil 1)) (y (list nil 2 nil))) (declare (special x y)) (assert (= (funcall fn) 2)))) ;;; Incorrect LIST type declaration, reported and patched by Teemu ;;; Kalvas: end testing is done "as if by atom" so this is supposed ;;; to work. (assert (equal '(1 2) (loop for (a . b) on '(1 2 . 3) collect a))) ;;; Detection of duplicate bindings, reported by Bruno Haible for CMUCL. (multiple-value-bind (_ condition) (ignore-errors (macroexpand '(LOOP WITH A = 0 FOR A DOWNFROM 10 TO 0 DO (PRINT A)))) (declare (ignore _)) (assert (typep condition 'program-error)))