3 (in-package :it.bese.FiveAM)
7 ;;;; At the lowest level testing the system requires that certain
8 ;;;; forms be evaluated and that certain post conditions are met: the
9 ;;;; value returned must satisfy a certain predicate, the form must
10 ;;;; (or must not) signal a certain condition, etc. In FiveAM these
11 ;;;; low level operations are called 'checks' and are defined using
12 ;;;; the various checking macros.
14 ;;;; Checks are the basic operators for collecting results. Tests and
15 ;;;; test suites on the other hand allow grouping multiple checks into
16 ;;;; logic collections.
18 (defvar *test-dribble* t)
20 (defmacro with-*test-dribble* (stream &body body)
21 `(let ((*test-dribble* ,stream))
22 (declare (special *test-dribble*))
25 (eval-when (:compile-toplevel :load-toplevel :execute)
26 (def-special-environment run-state ()
30 ;;;; ** Types of test results
32 ;;;; Every check produces a result object.
34 (defclass test-result ()
35 ((reason :accessor reason :initarg :reason :initform "no reason given")
36 (test-case :accessor test-case :initarg :test-case)
37 (test-expr :accessor test-expr :initarg :test-expr))
38 (:documentation "All checking macros will generate an object of
41 (defclass test-passed (test-result)
43 (:documentation "Class for successful checks."))
45 (defgeneric test-passed-p (object)
47 (:method ((o test-passed)) t))
49 (defclass test-failure (test-result)
51 (:documentation "Class for unsuccessful checks."))
53 (defgeneric test-failure-p (object)
55 (:method ((o test-failure)) t))
57 (defclass unexpected-test-failure (test-failure)
58 ((actual-condition :accessor actual-condition :initarg :condition))
59 (:documentation "Represents the result of a test which neither
60 passed nor failed, but signaled an error we couldn't deal
63 Note: This is very different than a SIGNALS check which instead
64 creates a TEST-PASSED or TEST-FAILURE object."))
66 (defclass test-skipped (test-result)
68 (:documentation "A test which was not run. Usually this is due
69 to unsatisfied dependencies, but users can decide to skip test
72 (defgeneric test-skipped-p (object)
74 (:method ((o test-skipped)) t))
76 (defparameter *debug-on-failure* nil
77 "If non-NIL then we drop into a debugger at each test failure.")
79 (define-condition debug-test-failure (error)
80 ((failed-result :initarg :failed-result :accessor failed-result)
81 (failed-test :initarg :failed-test :accessor failed-test))
82 (:report (lambda (condition stream)
83 (format stream "Test ~S failed with ~S."
84 (failed-test condition)
85 (failed-result condition)))))
87 (defun add-result (result-type &rest make-instance-args)
88 "Create a TEST-RESULT object of type RESULT-TYPE passing it the
89 initialize args MAKE-INSTANCE-ARGS and adds the resulting
90 object to the list of test results."
91 (with-run-state (result-list current-test)
92 (let ((result (apply #'make-instance result-type
93 (append make-instance-args (list :test-case current-test)))))
95 (test-passed (format *test-dribble* "."))
96 (unexpected-test-failure (format *test-dribble* "X"))
98 (when *debug-on-failure*
100 (invoke-debugger (make-instance 'debug-test-failure
101 :failed-test current-test
102 :failed-result result))
104 :report "Report a test failure and continue.")))
105 (format *test-dribble* "f"))
106 (test-skipped (format *test-dribble* "s")))
107 (push result result-list))))
109 ;;;; ** The check operators
111 ;;;; *** The IS check
113 (defmacro is (test &rest reason-args)
114 "The DWIM checking operator.
116 If TEST returns a true value a test-passed result is generated,
117 otherwise a test-failure result is generated and the reason,
118 unless REASON-ARGS is provided, is generated based on the form of
121 (predicate expected actual) - Means that we want to check
122 whether, according to PREDICATE, the ACTUAL value is
123 in fact what we EXPECTED.
125 (predicate value) - Means that we want to ensure that VALUE
128 Wrapping the TEST form in a NOT simply preducse a negated reason string."
131 "Argument to IS must be a list, not ~S" test)
132 (let (bindings effective-test default-reason-args)
133 (with-unique-names (e a v)
134 (list-match-case test
135 ((not (?predicate ?expected ?actual))
136 (setf bindings (list (list e ?expected)
138 effective-test `(not (,?predicate ,e ,a))
139 default-reason-args (list "~S was ~S to ~S" a `',?predicate e)))
140 ((not (?satisfies ?value))
141 (setf bindings (list (list v ?value))
142 effective-test `(not (,?satisfies ,v))
143 default-reason-args (list "~S satisfied ~S" v `',?satisfies)))
144 ((?predicate ?expected ?actual)
145 (setf bindings (list (list e ?expected)
147 effective-test `(,?predicate ,e ,a)
148 default-reason-args (list "~S was not ~S to ~S" a `',?predicate e)))
150 (setf bindings (list (list v ?value))
151 effective-test `(,?satisfies ,v)
152 default-reason-args (list "~S did not satisfy ~S" v `',?satisfies)))
156 default-reason-args "No reason supplied.")))
159 (add-result 'test-passed :test-expr ',test)
160 (add-result 'test-failure
161 :reason ,(if (null reason-args)
162 `(format nil ,@default-reason-args)
163 `(format nil ,@reason-args))
164 :test-expr ',test))))))
166 ;;;; *** Other checks
168 (defmacro skip (&rest reason)
169 "Generates a TEST-SKIPPED result."
171 (format *test-dribble* "s")
172 (add-result 'test-skipped :reason (format nil ,@reason))))
174 (defmacro is-true (condition &rest reason-args)
175 "Like IS this check generates a pass if CONDITION returns true
176 and a failure if CONDITION returns false. Unlike IS this check
177 does not inspect CONDITION to determine how to report the
180 (add-result 'test-passed :test-expr ',condition)
181 (add-result 'test-failure :reason ,(if reason-args
182 `(format nil ,@reason-args)
183 `(format nil "~S did not return a true value" ',condition))
184 :test-expr ',condition)))
186 (defmacro is-false (condition &rest reason-args)
187 "Generates a pass if CONDITION returns false, generates a
188 failure otherwise. Like IS-TRUE, and unlike IS, IS-FALSE does
189 not inspect CONDITION to determine what reason to give it case
192 (add-result 'test-failure :reason ,(if reason-args
193 `(format nil ,@reason-args)
194 `(format nil "~S returned a true value" ',condition))
195 :test-expr ',condition)
196 (add-result 'test-passed :test-expr ',condition)))
198 (defmacro signals (condition &body body)
199 "Generates a pass if BODY signals a condition of type
200 CONDITION. BODY is evaluated in a block named NIL, CONDITION is
202 (let ((block-name (gensym)))
204 (handler-bind ((,condition (lambda (c)
206 ;; ok, body threw condition
207 (add-result 'test-passed
208 :test-expr ',condition)
209 (return-from ,block-name t))))
212 (add-result 'test-failure
213 :reason (format nil "Failed to signal a ~S" ',condition)
214 :test-expr ',condition)
215 (return-from ,block-name nil))))))
217 (defmacro finishes (&body body)
218 "Generates a pass if BODY executes to normal completion. In
219 other words if body does signal, return-from or throw this test
227 (add-result 'test-passed :test-expr ',body)
228 (add-result 'test-failure
229 :reason (format nil "Test didn't finish")
230 :test-expr ',body)))))
232 (defmacro pass (&rest message-args)
233 "Simply generate a PASS."
234 `(add-result 'test-passed
235 :test-expr ',message-args
237 `(:reason (format nil ,@message-args)))))
239 (defmacro fail (&rest message-args)
240 "Simply generate a FAIL."
241 `(add-result 'test-failure
242 :test-expr ',message-args
244 `(:reason (format nil ,@message-args)))))
246 ;; Copyright (c) 2002-2003, Edward Marco Baringer
247 ;; All rights reserved.
249 ;; Redistribution and use in source and binary forms, with or without
250 ;; modification, are permitted provided that the following conditions are
253 ;; - Redistributions of source code must retain the above copyright
254 ;; notice, this list of conditions and the following disclaimer.
256 ;; - Redistributions in binary form must reproduce the above copyright
257 ;; notice, this list of conditions and the following disclaimer in the
258 ;; documentation and/or other materials provided with the distribution.
260 ;; - Neither the name of Edward Marco Baringer, nor BESE, nor the names
261 ;; of its contributors may be used to endorse or promote products
262 ;; derived from this software without specific prior written permission.
264 ;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
265 ;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
266 ;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
267 ;; A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
268 ;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
269 ;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
270 ;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
271 ;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
272 ;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
273 ;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
274 ;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE