Megatest

	     (getenv "MT_TARGET")    "/"
	     (getenv "MT_RUNNAME")   "/"
	     (getenv "MT_TEST_NAME") "/"
	     (if (or (getenv "MT_ITEMPATH")
		     (not (string=? "" (getenv "MT_ITEMPATH"))))
		 (conc "/" (getenv "MT_ITEMPATH"))))))

;; if .testconfig exists in test directory read and return it
;; else if have cached copy in *testconfigs* return it IFF there is a section "have fulldata"
;; else read the testconfig file
;;   if have path to test directory save the config as .testconfig and return it
;;
(define (tests:get-testconfig test-name test-registry system-allowed #!key (force-create #f))
  (let* ((cache-path   (tests:get-test-path-from-environment))
	 (cache-file   (and cache-path (conc cache-path "/.testconfig")))
	 (cache-exists (and cache-file
			    (not force-create)  ;; if force-create then pretend there is no cache to read
			    (file-exists? cache-file)))
	 (cached-dat   (if (and (not force-create)
				cache-exists)
			   (handle-exceptions
			    exn
			    #f ;; any issues, just give up with the cached version and re-read
			    (configf:read-alist cache-file))
			   #f)))
    (if cached-dat
	cached-dat
	(let ((dat (hash-table-ref/default *testconfigs* test-name #f)))
	  (if (and  dat ;; have a locally cached version
		    (hash-table-ref/default dat "have fulldata" #f)) ;; marked as good data?
	      dat
	      ;; no cached data available
  (let* ((treg              (or test-registry
				(tests:get-all)))
	 (test-path         (hash-table-ref/default 
			     treg test-name 
		     (test-path    (or (hash-table-ref/default treg test-name #f)
			     (conc *toppath* "/tests/" test-name)))
	 (test-configf (conc test-path "/testconfig"))
	 (testexists   (and (file-exists? test-configf)(file-read-access? test-configf)))
	 (cache-path   (tests:get-test-path-from-environment))
	 (cache-exists (and cache-path 
			    (not force-create)  ;; if force-create then pretend there is no cache to read
			    (file-exists? (conc cache-path "/.testconfig"))))
	 (cache-file   (conc cache-path "/.testconfig"))
	 (tcfg         (if testexists
			   (or (and (not force-create)
				    cache-exists
				    (handle-exceptions
				     exn
				     (begin
				       (debug:print 0 "WARNING: Failed to read " cache-file) 
				       (make-hash-table)) ;; better to return a hash and keep going - I think
				     (configf:read-alist cache-file)))
			       (read-config test-configf #f system-allowed environ-patt: (if system-allowed
				       (read-config test-configf #f system-allowed
						    environ-patt: (if system-allowed
											     "pre-launch-env-vars"
											     #f)))
								      #f))
			   #f)))
		(if cache-file (hash-table-set! tcfg "have fulldata" #t)) ;; mark this as fully read data
    (hash-table-set! *testconfigs* test-name tcfg)
		(if tcfg (hash-table-set! *testconfigs* test-name tcfg))
    (if (and testexists
	     cache-path
			 cache-file
	     (not cache-exists)
	     (file-write-access? cache-path))
	(let ((tpath (conc cache-path "/.testconfig")))
	  (debug:print-info 1 "Caching testconfig for " test-name " in " tpath)
	  (configf:write-alist tcfg tpath)))
    tcfg))
		tcfg))))))
  
;; sort tests by priority and waiton
;; Move test specific stuff to a test unit FIXME one of these days
(define (tests:sort-by-priority-and-waiton test-records)
  (let* ((mungepriority (lambda (priority)
			  (if priority
			      (let ((tmp (any->number priority)))