1 ;;;; miscellaneous tests of LOOP-related stuff
3 ;;;; This software is part of the SBCL system. See the README file for
6 ;;;; While most of SBCL is derived from the CMU CL system, the test
7 ;;;; files (like this one) were written from scratch after the fork
10 ;;;; This software is in the public domain and is provided with
11 ;;;; absolutely no warranty. See the COPYING and CREDITS files for
12 ;;;; more information.
14 (in-package "CL-USER")
16 ;;; The bug reported by Alexei Dejneka on sbcl-devel 2001-09-03
18 (assert (equal (let ((hash (make-hash-table)))
19 (setf (gethash 'key1 hash) 'val1)
20 (setf (gethash 'key2 hash) 'val2)
21 (sort (loop for key being each hash-key in hash
26 ;;; Bug 81, reported by Wolfhard Buss on cmucl-help 2001-02-14, was
27 ;;; fixed by Alexey Dejneka's patch on sbcl-devel 2001-09-30.
28 (assert (equal '(0.0 1.0 2.0 3.0)
29 (loop with (a . b) of-type float = '(0.0 . 1.0)
30 and (c . d) of-type float = '(2.0 . 3.0)
31 return (list a b c d))))
33 ;;; a bug reported and fixed by Alexey Dejneka sbcl-devel 2001-10-05:
34 ;;; The type declarations should apply, hence under Python's
35 ;;; declarations-are-assertions rule, the code should signal a type
36 ;;; error. (Except when running interpreted code)
37 #+#.(cl:if (cl:eq sb-ext:*evaluator-mode* :compile) '(and) '(or))
38 (assert (typep (nth-value 1
42 of-type float = '(5 . 5)
43 return (list a b))))))
46 ;;; bug 103, reported by Arthur Lemmens sbcl-devel 2001-05-05,
47 ;;; fixed by Alexey Dejneka patch sbcl-devel 2001-10-05:
48 ;;; LOOP syntax requires that forms after INITIALLY, FINALLY, and DO
49 ;;; must be compound forms.
50 (multiple-value-bind (function warnings-p failure-p)
56 (declare (ignore function warnings-p))
59 ;;; a bug reported by Paul F. Dietz (in his ANSI test suite):
60 ;;; duplicate bindings in LOOP must signal errors of type
62 (assert (typep (nth-value 1
65 (loop for (a . a) in '((1 . 2) (3 . 4))
69 ;;; similar to gcl/ansi-test LOOP.1.27, and fixed at the same time:
70 (assert (equal (loop for x downto 7 by 2 from 13 collect x) '(13 11 9 7)))
72 ;;; some more from gcl/ansi-test:
73 (let ((table (make-hash-table)))
74 (setf (gethash 'foo table) '(bar baz))
75 (assert (= (loop for nil being the hash-keys of table count t) 1))
76 (assert (equal (loop for nil being the hash-keys of table
77 using (hash-value (v1 . v2))
82 (assert (= (loop for nil being the external-symbols of :cl count t) 978))
83 (assert (= (loop for x being the external-symbols of :cl count x) 977))
85 (let ((*package* (find-package :cl)))
86 (assert (= (loop for x being each external-symbol count t) 978)))
88 (assert (eq (loop for a = (return t) return nil) t))
90 (multiple-value-bind (result error)
92 (loop for nil being the external-symbols of :nonexistent-package
94 (assert (null result))
95 (assert (typep error 'package-error)))
97 (assert (equal (loop for i from 1 repeat (the (integer 7 7) 7) collect i)
100 (multiple-value-bind (result error)
102 (eval '(loop for i from 1 repeat 7 of-type fixnum collect i)))
103 (assert (null result))
104 (assert (typep error 'program-error)))
107 (ignore-errors (loop for i from 1 repeat 6.5 collect i))
108 (ignore-errors (loop for i from 1 repeat (eval '6.5) collect i))))
110 (assert (eq (block nil
111 (loop named foo do (loop-finish) finally (return :good))
115 (assert (= (loop with (a nil) = '(1 2) return a) 1))
116 (assert (= (loop with (nil a) = '(1 2) return a) 2))
117 (assert (= (loop with (a . nil) = '(1 2) return a) 1))
118 (assert (equal (loop with (nil . a) = '(1 2) return a) '(2)))
120 (multiple-value-bind (result error)
122 (loop for i in '(1 2 3) collect i always (< i 4)))
123 (assert (null result))
124 (assert (typep error 'program-error)))
126 (loop for i in '(1 2 3) collect i into foo always (< i 4)
127 finally (return foo))
130 (loop for i in '(1 2 3) collect i into foo always (= i 4)
131 finally (return foo))
133 (multiple-value-bind (result error)
135 (loop for i in '(1 2 3) always (< i 4) collect i))
136 (assert (null result))
137 (assert (typep error 'program-error)))
139 (loop for i in '(1 2 3) always (< i 4) collect i into foo
140 finally (return foo))
143 (loop for i in '(1 2 3) always (= i 4) collect i into foo
144 finally (return foo))
146 (multiple-value-bind (result error)
148 (loop for i in '(1 2 3) thereis (= i 3) collect i))
149 (assert (null result))
150 (assert (typep error 'program-error)))
152 (multiple-value-bind (result error)
154 (loop with i = 1 for x from 1 to 3 collect x into i))
155 (assert (null result))
156 (assert (typep error 'program-error)))
157 (multiple-value-bind (result error)
158 ;; this one has a plausible interpretation in terms of LET*, but
159 ;; ANSI seems specifically to disallow it
161 (loop with i = 1 with i = (1+ i)
164 (assert (null result))
165 (assert (typep error 'program-error)))
169 ;; this one just seems weird. Nevertheless...
170 (loop for i in '(a b c d)
174 '(a z b z c z d z))))
176 (let ((ht (make-hash-table)))
177 (setf (gethash 1 ht) 3)
178 (setf (gethash 7 ht) 15)
179 (assert (= (loop for v fixnum being each hash-key in ht sum v) 8))
180 (assert (= (loop for v fixnum being each hash-value in ht sum v) 18))
181 #+#.(cl:if (cl:eq sb-ext:*evaluator-mode* :compile) '(and) '(or))
182 (assert (raises-error? (loop for v float being each hash-value in ht sum v)
185 ;; arithmetic indexes can be NIL or symbols.
186 (assert (equal (loop for nil from 0 to 2 collect nil)
188 (assert (equal (loop for nil to 2 collect nil)
191 ;; although allowed by the loop syntax definition in 6.2/LOOP,
192 ;; 6.1.2.1.1 says: "The variable var is bound to the value of form1 in
193 ;; the first iteration[...]"; since we can't bind (i j) to anything,
194 ;; we give a program error.
195 (multiple-value-bind (function warnings-p failure-p)
198 (loop for (i j) from 4 to 6 collect nil)))
201 ;; ...and another for indexes without FROM forms (these are treated
202 ;; differently by the loop code right now
203 (multiple-value-bind (function warnings-p failure-p)
206 (loop for (i j) to 6 collect nil)))
212 (loop for d of-type double-float from 0d0 to 10d0 by x collect d))
213 '(0d0 2d0 4d0 6d0 8d0 10d0)))
217 (loop for d of-type double-float downfrom 10d0 to 0d0 by x collect d))
218 '(10d0 8d0 6d0 4d0 2d0 0d0)))
220 (let ((fn (handler-case
221 (compile nil '(lambda ()
222 (declare (special x y))
223 (loop thereis (pop x) thereis (pop y))))
224 (warning (c) (error "Warned: ~S" c)))))
225 (let ((x (list nil nil 1))
226 (y (list nil 2 nil)))
227 (declare (special x y))
228 (assert (= (funcall fn) 2))))
230 ;;; Incorrect LIST type declaration, reported and patched by Teemu
231 ;;; Kalvas: end testing is done "as if by atom" so this is supposed
233 (assert (equal '(1 2) (loop for (a . b) on '(1 2 . 3) collect a)))
235 ;;; Detection of duplicate bindings, reported by Bruno Haible for CMUCL.
236 (multiple-value-bind (_ condition)
238 (macroexpand '(LOOP WITH A = 0 FOR A DOWNFROM 10 TO 0 DO (PRINT A))))
240 (assert (typep condition 'program-error)))
242 ;;; Loop variable with a range excluding 0, reported by Andras Simon.
243 ;;; (Used to signal an error during macroexpansion.)
244 (assert (not (loop with foo of-type (single-float 1.0 2.0) = 1.5 do (return))))