;;;; exceptions.test --- tests for Guile's exception handling -*- scheme -*-
-;;;; Copyright (C) 2001 Free Software Foundation, Inc.
+;;;; Copyright (C) 2001, 2003, 2004, 2006, 2010 Free Software Foundation, Inc.
;;;;
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
-;;;; version 2.1 of the License, or (at your option) any later version.
+;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
-;;;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+(use-modules (test-suite lib))
+
+(define-syntax-parameter push
+ (lambda (stx)
+ (syntax-violation 'push "push used outside of throw-test" stx)))
+
+(define-syntax-rule (throw-test title result expr ...)
+ (pass-if title
+ (equal? result
+ (let ((stack '()))
+ (syntax-parameterize ((push (syntax-rules ()
+ ((push val)
+ (set! stack (cons val stack))))))
+ expr ...
+ ;;(format #t "~a: ~s~%" title (reverse stack))
+ (reverse stack))))))
+
(with-test-prefix "throw/catch"
(with-test-prefix "wrong type argument"
exception:wrong-num-args
(catch 'a
(lambda () (throw 'a))
- (lambda (x y . rest) #f)))))
+ (lambda (x y . rest) #f))))
+
+ (with-test-prefix "with pre-unwind handler"
+
+ (pass-if "pre-unwind fluid state"
+ (equal? '(inner outer arg)
+ (let ((fluid-parm (make-fluid))
+ (inner-val #f))
+ (fluid-set! fluid-parm 'outer)
+ (catch 'misc-exc
+ (lambda ()
+ (with-fluids ((fluid-parm 'inner))
+ (throw 'misc-exc 'arg)))
+ (lambda (key . args)
+ (list inner-val
+ (fluid-ref fluid-parm)
+ (car args)))
+ (lambda (key . args)
+ (set! inner-val (fluid-ref fluid-parm))))))))
+
+ (throw-test "normal catch"
+ '(1 2)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (throw 'a))
+ (lambda (key . args)
+ (push 2))))
+
+ (throw-test "catch and with-throw-handler"
+ '(1 2 3 4)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler
+ 'a
+ (lambda ()
+ (push 2)
+ (throw 'a))
+ (lambda (key . args)
+ (push 3))))
+ (lambda (key . args)
+ (push 4))))
+
+ (throw-test "catch with rethrowing throw-handler"
+ '(1 2 3 4)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler
+ 'a
+ (lambda ()
+ (push 2)
+ (throw 'a))
+ (lambda (key . args)
+ (push 3)
+ (apply throw key args))))
+ (lambda (key . args)
+ (push 4))))
+
+ (throw-test "catch with pre-unwind handler"
+ '(1 3 2)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (throw 'a))
+ (lambda (key . args)
+ (push 2))
+ (lambda (key . args)
+ (push 3))))
+
+ (throw-test "catch with rethrowing pre-unwind handler"
+ '(1 3 2)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (throw 'a))
+ (lambda (key . args)
+ (push 2))
+ (lambda (key . args)
+ (push 3)
+ (apply throw key args))))
+
+ (throw-test "catch with throw handler"
+ '(1 2 3 4)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 2)
+ (throw 'a))
+ (lambda (key . args)
+ (push 3))))
+ (lambda (key . args)
+ (push 4))))
+
+ (throw-test "catch with rethrowing throw handler"
+ '(1 2 3 4)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 2)
+ (throw 'a))
+ (lambda (key . args)
+ (push 3)
+ (apply throw key args))))
+ (lambda (key . args)
+ (push 4))))
+
+ (throw-test "effect of with-throw-handler not-unwinding on throw to another key"
+ '(1 2 3 5 4 6)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'b
+ (lambda ()
+ (push 2)
+ (catch 'a
+ (lambda ()
+ (push 3)
+ (throw 'b))
+ (lambda (key . args)
+ (push 4))))
+ (lambda (key . args)
+ (push 5)
+ (throw 'a)))
+ (push 6))
+ (lambda (key . args)
+ (push 7))))
+
+ (throw-test "with-throw-handler chaining"
+ '(1 2 3 4 6 8)
+ (catch 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 2)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 3)
+ (throw 'a))
+ (lambda (key . args)
+ (push 4)))
+ (push 5))
+ (lambda (key . args)
+ (push 6)))
+ (push 7))
+ (lambda (key . args)
+ (push 8))))
+
+ (throw-test "throw handlers throwing to each other recursively"
+ '(1 2 3 4 8 6 10 12)
+ (catch #t
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 2)
+ (with-throw-handler 'b
+ (lambda ()
+ (push 3)
+ (with-throw-handler 'c
+ (lambda ()
+ (push 4)
+ (throw 'b)
+ (push 5))
+ (lambda (key . args)
+ (push 6)
+ (throw 'a)))
+ (push 7))
+ (lambda (key . args)
+ (push 8)
+ (throw 'c)))
+ (push 9))
+ (lambda (key . args)
+ (push 10)
+ (throw 'b)))
+ (push 11))
+ (lambda (key . args)
+ (push 12))))
+
+ (throw-test "throw handler throwing to lexically inside catch"
+ '(1 2 7 5 4 6 9)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 1)
+ (catch 'b
+ (lambda ()
+ (push 2)
+ (throw 'a)
+ (push 3))
+ (lambda (key . args)
+ (push 4))
+ (lambda (key . args)
+ (push 5)))
+ (push 6))
+ (lambda (key . args)
+ (push 7)
+ (throw 'b)
+ (push 8)))
+ (push 9))
+
+ (throw-test "reuse of same throw handler after lexically inside catch"
+ '(0 1 2 7 5 4 6 7 10)
+ (catch 'b
+ (lambda ()
+ (push 0)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 1)
+ (catch 'b
+ (lambda ()
+ (push 2)
+ (throw 'a)
+ (push 3))
+ (lambda (key . args)
+ (push 4))
+ (lambda (key . args)
+ (push 5)))
+ (push 6)
+ (throw 'a))
+ (lambda (key . args)
+ (push 7)
+ (throw 'b)
+ (push 8)))
+ (push 9))
+ (lambda (key . args)
+ (push 10))))
+
+ (throw-test "again but with two chained throw handlers"
+ '(0 1 11 2 13 7 5 4 12 13 7 10)
+ (catch 'b
+ (lambda ()
+ (push 0)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 1)
+ (with-throw-handler 'a
+ (lambda ()
+ (push 11)
+ (catch 'b
+ (lambda ()
+ (push 2)
+ (throw 'a)
+ (push 3))
+ (lambda (key . args)
+ (push 4))
+ (lambda (key . args)
+ (push 5)))
+ (push 12)
+ (throw 'a))
+ (lambda (key . args)
+ (push 13)))
+ (push 6))
+ (lambda (key . args)
+ (push 7)
+ (throw 'b)))
+ (push 9))
+ (lambda (key . args)
+ (push 10))))
+
+ )
+
+(with-test-prefix "false-if-exception"
+
+ (pass-if (false-if-exception #t))
+ (pass-if (not (false-if-exception #f)))
+ (pass-if (not (false-if-exception (error "xxx"))))
+
+ ;; Not yet working.
+ ;;
+ ;; (with-test-prefix "in empty environment"
+ ;; ;; an environment with no bindings at all
+ ;; (define empty-environment
+ ;; (make-module 1))
+ ;;
+ ;; (pass-if "#t"
+ ;; (eval `(,false-if-exception #t)
+ ;; empty-environment))
+ ;; (pass-if "#f"
+ ;; (not (eval `(,false-if-exception #f)
+ ;; empty-environment)))
+ ;; (pass-if "exception"
+ ;; (not (eval `(,false-if-exception (,error "xxx"))
+ ;; empty-environment))))
+ )
HCoop / bpt / guile.git / blobdiff