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(chibi test): add a type test for exceptions in test-error

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Daphne Preston-Kendal 2024-08-25 21:28:28 +01:00
parent 24b5837562
commit 5bc498b32a
1 changed files with 23 additions and 5 deletions
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28
lib/chibi/test.scm
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@ -144,10 +144,11 @@
(test name (call-with-values (lambda () expect) (lambda results results))
(call-with-values (lambda () expr) (lambda results results))))))
;;> \macro{(test-error [name] expr)}
;;> \macro{(test-error [name [pred]] expr)}
;;> Like \scheme{test} but evaluates \var{expr} and checks that it
;;> raises an error.
;;> raises an error. If \var{pred} is provided, the raised error
;;> object must additionally satisfy the given type test.
(define-syntax test-error
(syntax-rules ()
@ -155,8 +156,12 @@
(test-error #f expr))
((_ name expr)
(test-propagate-info name #f expr ((expect-error . #t))))
((_ name pred expr)
(test-propagate-info name #f expr ((expect-error . #t)
(error-type-test . ,pred)
(error-type-test-expr . pred))))
((test a ...)
(test-syntax-error 'test-error "1 or 2 arguments required"
(test-syntax-error 'test-error "1, 2, or 3 arguments required"
(test a ...)))))
;;> Low-level macro to pass alist info to the underlying \var{test-run}.
@ -535,6 +540,12 @@
(expect))))
(guard
(exn
((and (assq-ref info 'expect-error)
(assq-ref info 'error-type-test))
=> (lambda (pred)
((current-test-reporter)
(if (pred exn) 'PASS 'FAIL)
(append `((exception . ,exn)) info))))
(else
((current-test-reporter)
(if (assq-ref info 'expect-error) 'PASS 'ERROR)
@ -595,8 +606,15 @@
(display "assertion failed"))
((and (eq? status 'FAIL) (assq-ref info 'expect-error))
(display indent)
(display "expected an error but got ")
(write (assq-ref info 'result)))
(if (assq-ref info 'exception)
(begin
(display "error should satisfy ")
(write (assq-ref info 'error-type-test-expr))
(display " but raised ")
(write (assq-ref info 'exception)))
(begin
(display "expected an error but got ")
(write (assq-ref info 'result)))))
((eq? status 'FAIL)
(display indent)
(display-expected/actual