Commit 0841118f authored by Ludovic Courtès's avatar Ludovic Courtès
Browse files

messaging: Make "execute_request" more robust.

* tests/kernels.scm ("execute_request"): Rewrite to remove assumptions
about ordering, and to account for all the replies.
parent 3c2884bc
......@@ -21,7 +21,9 @@
#:use-module (json)
#:use-module (rnrs bytevectors)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-64))
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-64)
#:use-module (ice-9 match))
(define %context
......@@ -97,28 +99,49 @@
;; in the request-reply pattern, we first receive on the iopub socket a
;; "status" message, then our input is broadcast on iopub, and then we
;; get the result.
(let* ((reply1 (read-message %kernel))
(reply2 (read-message %kernel))
(reply3 (read-message %kernel))
(replies (pk 'replies (list reply1 reply2 reply3))))
(and (every message? replies)
(every (compose bytevector? message-sender) replies)
(string=? "status" (message-type reply1))
(string=? "busy"
(assoc-ref (json-string->scm (message-content reply1))
(equal? (message-parent-header reply1) (message-header request))
(string=? "execute_input" (message-type reply2))
(equal? (message-parent-header reply2) (message-header request))
(string=? (message-type reply3) "execute_result")
(equal? (message-parent-header reply3) (message-header request))
(let* ((content (json-string->scm (message-content reply3)))
(data (assoc-ref content "data"))
(text (assoc-ref data "text/plain")))
(string->number text))))))
;; However, ordering is not guaranteed: since we poll on all these
;; sockets, we might get the iopub message before the shell message.
;; Thus, this test does not make any assumptions on ordering.
(let* ((replies (unfold (cut > <> 4)
(lambda (_)
(read-message %kernel 10000))
1+ 0)))
(define (type-predicate type)
(lambda (message)
(string=? (message-type message) type)))
(and (every message? (pk 'replies replies))
(match (filter (type-predicate "status") replies)
((busy idle)
;; We got two message: busy *then* idle.
(and (string=? "busy"
(assoc-ref (json-string->scm
(message-content busy))
(string=? "idle"
(assoc-ref (json-string->scm
(message-content idle))
(equal? (message-parent-header busy)
(message-header request))
(equal? (message-parent-header idle)
(message-header request)))))
(let ((input (find (type-predicate "execute_input") replies)))
(equal? (message-parent-header input) (message-header request)))
(let ((reply (find (type-predicate "execute_reply") replies)))
(equal? (message-parent-header reply) (message-header request)))
(let ((result (find (type-predicate "execute_result") replies)))
(and (equal? (message-parent-header result)
(message-header request))
(let* ((content (json-string->scm (message-content result)))
(data (assoc-ref content "data"))
(text (assoc-ref data "text/plain")))
(string->number text))))))))
(when %kernel
(close-kernel %kernel)
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