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+;;;; -*- Mode: Lisp; indent-tabs-mode: nil -*-
+
+(in-package :it.bese.fiveam)
+
+;;;; * Tests
+
+;;;; While executing checks and collecting the results is the core job
+;;;; of a testing framework it is also important to be able to
+;;;; organize checks into groups, fiveam provides two mechanisms for
+;;;; organizing checks: tests and test suites. A test is a named
+;;;; collection of checks which can be run and a test suite is a named
+;;;; collection of tests and test suites.
+
+(declaim (special *suite*))
+
+(defvar *test*
+  (make-hash-table :test 'eql)
+  "Lookup table mapping test (and test suite)
+  names to objects.")
+
+(defun get-test (key &optional default)
+  (gethash key *test* default))
+
+(defun (setf get-test) (value key)
+  (setf (gethash key *test*) value))
+
+(defun rem-test (key)
+  (remhash key *test*))
+
+(defun test-names ()
+  (hash-table-keys *test*))
+
+(defmacro test (name &body body)
+  "Create a test named NAME. If NAME is a list it must be of the
+form:
+
+  (name &key depends-on suite fixture compile-at profile)
+
+NAME is the symbol which names the test.
+
+DEPENDS-ON is a list of the form:
+
+ (AND . test-names) - This test is run only if all of the tests
+ in TEST-NAMES have passed, otherwise a single test-skipped
+ result is generated.
+
+ (OR . test-names) - If any of TEST-NAMES has passed this test is
+ run, otherwise a test-skipped result is generated.
+
+ (NOT test-name) - This is test is run only if TEST-NAME failed.
+
+AND, OR and NOT can be combined to produce complex dependencies.
+
+If DEPENDS-ON is a symbol it is interpreted as `(AND
+,depends-on), this is accomadate the common case of one test
+depending on another.
+
+FIXTURE specifies a fixture to wrap the body in.
+
+If PROFILE is T profiling information will be collected as well."
+  (destructuring-bind (name &rest args)
+      (ensure-list name)
+    `(def-test ,name (,@args) ,@body)))
+
+(defvar *default-test-compilation-time* :definition-time)
+
+(defmacro def-test (name (&key depends-on (suite '*suite* suite-p) fixture
+                            (compile-at *default-test-compilation-time*) profile)
+                    &body body)
+  "Create a test named NAME.
+
+NAME is the symbol which names the test.
+
+DEPENDS-ON is a list of the form:
+
+ (AND . test-names) - This test is run only if all of the tests
+ in TEST-NAMES have passed, otherwise a single test-skipped
+ result is generated.
+
+ (OR . test-names) - If any of TEST-NAMES has passed this test is
+ run, otherwise a test-skipped result is generated.
+
+ (NOT test-name) - This is test is run only if TEST-NAME failed.
+
+AND, OR and NOT can be combined to produce complex dependencies.
+
+If DEPENDS-ON is a symbol it is interpreted as `(AND
+,depends-on), this is accomadate the common case of one test
+depending on another.
+
+FIXTURE specifies a fixture to wrap the body in.
+
+If PROFILE is T profiling information will be collected as well."
+  (check-type compile-at (member :run-time :definition-time))
+  (multiple-value-bind (forms decls docstring)
+      (parse-body body :documentation t :whole name)
+    (let* ((description (or docstring ""))
+           (body-forms (append decls forms))
+           (suite-form (if suite-p
+                           `(get-test ',suite)
+                           (or suite '*suite*)))
+           (effective-body (if fixture
+                               (destructuring-bind (name &rest args)
+                                   (ensure-list fixture)
+                                 `((with-fixture ,name ,args ,@body-forms)))
+                               body-forms)))
+      `(progn
+         (register-test ',name ,description ',effective-body ,suite-form ',depends-on ,compile-at ,profile)
+         (when *run-test-when-defined*
+           (run! ',name))
+         ',name))))
+
+(defun register-test (name description body suite depends-on compile-at profile)
+  (let ((lambda-name
+          (format-symbol t "%~A-~A" '#:test name))
+        (inner-lambda-name
+          (format-symbol t "%~A-~A" '#:inner-test name)))
+    (setf (get-test name)
+          (make-instance 'test-case
+                         :name name
+                         :runtime-package (find-package (package-name *package*))
+                         :test-lambda
+                         (eval
+                          `(named-lambda ,lambda-name ()
+                             ,@(ecase compile-at
+                                 (:run-time `((funcall
+                                               (let ((*package* (find-package ',(package-name *package*))))
+                                                 (compile ',inner-lambda-name
+                                                          '(lambda () ,@body))))))
+                                 (:definition-time body))))
+                         :description description
+                         :depends-on depends-on
+                         :collect-profiling-info profile))
+    (setf (gethash name (tests suite)) name)))
+
+(defvar *run-test-when-defined* nil
+  "When non-NIL tests are run as soon as they are defined.")
+
+;; Copyright (c) 2002-2003, Edward Marco Baringer
+;; All rights reserved.
+;;
+;; Redistribution and use in source and binary forms, with or without
+;; modification, are permitted provided that the following conditions are
+;; met:
+;;
+;;  - Redistributions of source code must retain the above copyright
+;;    notice, this list of conditions and the following disclaimer.
+;;
+;;  - Redistributions in binary form must reproduce the above copyright
+;;    notice, this list of conditions and the following disclaimer in the
+;;    documentation and/or other materials provided with the distribution.
+;;
+;;  - Neither the name of Edward Marco Baringer, nor BESE, nor the names
+;;    of its contributors may be used to endorse or promote products
+;;    derived from this software without specific prior written permission.
+;;
+;; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+;; "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+;; LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+;; A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+;; OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+;; SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+;; LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+;; DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+;; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+;; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+;; OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.