;;; -*- Lisp -*-

(load "script-support.lisp")

(load-asdf)

;;;---------------------------------------------------------------------------
;;; Here's what we are trying to test.  Let us say we have a system X that
;;; contains a file, "file1" and a module, "quux" that depends on file 1.  In
;;; turn, "quux" contains "file2" which depends on loading another system, Y
;;; (note that this dependency cannot be recorded using only the defsystem
;;; grammar; we must use an ancillary method definition).  If we over-force
;;; actions, then the recompiling of "file1" will force "quux" to be loaded,
;;; forcing "file2" load and in turn forcing the reload and recompilation of Y.
;;; If operations are done properly, a change to file1 will force recompilation
;;; and reloading of "file2," but /not/ of system Y.
;;;---------------------------------------------------------------------------

(with-test ()

  (defsystem :test-module-excessive-depend

   :components ((:file "file1")
                (:module "quux"
                 :pathname ""
                 :depends-on ("file1")
                 :components ((:file "file2")))))

  (defun find-quux ()
    (find-component :test-module-excessive-depend "quux"))

  (defun find-file2 ()
    (find-component (find-quux) "file2"))

  (defmethod component-depends-on ((op load-op)
                                   (c (eql (find-file2))))
    (cons `(load-op ,(find-system "file3-only"))
          (call-next-method)))

  (defmethod component-depends-on ((op compile-op)
                                   (c (eql (find-file2))))
    (cons `(load-op ,(find-system "file3-only"))
          (call-next-method)))

  (DBG "loading test-module-excessive-depend"
       (operate 'load-op 'test-module-excessive-depend))

  ;; test that it compiled
  (let* ((file1 (compile-file-pathname* "file1"))
         (file2 (compile-file-pathname* "file2"))
         (file3 (compile-file-pathname* "file3"))
         (file1-date (file-write-date file1))
         (file2-date (file-write-date file2))
         (file3-date (file-write-date file3)))
    (unless (and file1-date file2-date file3-date)
      (error "Failed to compile one of the three files ~

	     that should be compiled for this test: ~{~a~}"

             (mapcar #'cdr
                     (remove-if #'car
                                (pairlis (list file1-date file2-date file3-date)
                                         '("file1" "file2" "file3"))))))

    ;; and loaded
    (assert (eval (asdf::find-symbol* '#:*file1* :test-package)))
    (assert (eval (asdf::find-symbol* '#:*file3* :test-package)))

    ;; now touch file1 and check that file2 _is_ also recompiled
    ;; but that file3 is _not_ recompiled.
    ;; this will only work if the cross-module (intra-system)
    ;; dependency bug is fixed and the excessive compilation bug is fixed.

    (let ((before file3-date))
      (touch-file "file1.lisp" :timestamp (- before 60))
      (touch-file file1 :timestamp (- before 90))
      (touch-file "file2.lisp" :timestamp (- before 30))
      (touch-file file2 :timestamp (- before 15))