Bits-And-Pieces/Common-Lisp-Bits-And-Pieces/Chapter-09/testing-framework.lisp

39 lines
1.2 KiB
Common Lisp

(defpackage :BARRA-TESTING-FRAMEWORK
(:use :common-lisp))
(in-package "BARRA-TESTING-FRAMEWORK")
(defvar *test-name* nil)
(defmacro with-gensyms ((&rest names) &body body)
`(let ,(loop for n in names collect `(,n (gensym)))
,@body))
(defmacro deftest (name parameters &body body)
"Define a test function. Within a test function we can call
other test functions or use 'check' to run individual test
cases."
`(defun ,name ,parameters
(let ((*test-name* (append *test-name* (list ',name))))
,@body)))
(defmacro check (&body forms)
"Run each expression in 'forms' as a test case."
`(combine-results
,@(loop for f in forms collect `(report-result ,f ',f))))
(defmacro combine-results (&body forms)
"Combine the results (as booleans) of evaluating 'forms' in order."
(with-gensyms (result)
`(let ((,result t))
,@(loop for f in forms collect `(unless ,f (setf ,result nil)))
,result)))
(defun report-result (result form)
"Report the results of a single test case. Called by 'check'."
(format t "~:[FAIL~;PASS~] - ~a: ~a~%" result *test-name* form)
result)
(let ((pack (find-package :foo)))
(do-all-symbols (sym pack) (when (eql (symbol-package sym) pack) (export sym))))