Prevent result accumulation within LCP's tests

Summary:
PROVE:PLAN clears the previously stored results for the current suite (which is
the suite associated with the current package) and prevents "result
accumulation" (and the accompanying huge and partly outdated reports).

Reviewers: mtomic, teon.banek

Reviewed By: teon.banek

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D1909

src/lisp/lcp-test.lisp

@@ -24,8 +24,6 @@
         (lcp::parse-cpp-type-declaration type-decl2)
         :test #'lcp::cpp-type=))
 
-(plan nil)
-
 (deftest "supported"
   (subtest "designators"
     (mapc (lambda (sym)

src/lisp/lcp.asd

@@ -15,4 +15,7 @@
 (defsystem "lcp/test"
   :depends-on ("lcp" "prove")
   :components ((:file "lcp-test"))
-  :perform (test-op :after (op s) (symbol-call :prove :run-test-package :lcp-test)))
+  :perform (test-op :after (op s)
+                    (let ((*package* (find-package :lcp-test)))
+                      (symbol-call :prove :plan nil)
+                      (symbol-call :prove :run-test-package :lcp-test))))

tests/unit/test_lcp.lisp

@@ -8,6 +8,7 @@
 (setf uiop:*image-entry-point*
       (lambda ()
         (let ((prove:*default-reporter* :fiveam))
+          (prove:plan nil)
           (unless (prove:run-test-package :lcp-test)
             (uiop:quit 1)))))
 (uiop:dump-image "test_lcp" :executable t)