0.9.1.6:

[sbcl.git] / tests / loop.pure.lisp

diff --git a/tests/loop.pure.lisp b/tests/loop.pure.lisp
index 7e6d4ce..6d5f3e4 100644 (file)
--- a/tests/loop.pure.lisp
+++ b/tests/loop.pure.lisp
@@ -146,4 +146,93 @@
     (ignore-errors
       (loop for i in '(1 2 3) thereis (= i 3) collect i))
   (assert (null result))
-  (assert (typep error 'program-error)))
\ No newline at end of file
+  (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)))