janet/test/suite0009.janet

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(import ./helper :prefix "" :exit true)
(start-suite 9)

# Net testing

(defn handler
  "Simple handler for connections."
  [stream]
  (defer (:close stream)
    (def id (gensym))
    (def b @"")
    (:read stream 1024 b)
    (:write stream b)
    (buffer/clear b)))

(def s (net/server "127.0.0.1" "8000" handler))
(assert s "made server 1")

# We need some sleep for windows to let the server stabilize
# or else the first read can fail. Might be a strange windows
# "bug", but needs further investigating. Otherwise, `build_win test`
# can sometimes fail on windows, leading to flaky testing.
(ev/sleep 0.3)

(defn test-echo [msg]
  (with [conn (net/connect "127.0.0.1" "8000")]
    (:write conn msg)
    (def res (:read conn 1024))
    (assert (= (string res) msg) (string "echo " msg))))

(test-echo "hello")
(test-echo "world")
(test-echo (string/repeat "abcd" 200))

(:close s)

# Create pipe

(var pipe-counter 0)
(def chan (ev/chan 10))
(let [[reader writer] (os/pipe)]
  (ev/sleep 0.3)
  (ev/spawn
    (while (ev/read reader 3)
      (++ pipe-counter))
    (assert (= 20 pipe-counter) "ev/pipe 1")
    (ev/give chan 1))

  (for i 0 10
    (ev/write writer "xxx---"))

  (ev/close writer)
  (ev/take chan))

(var result nil)
(def fiber
  (ev/spawn 
    (set result (protect (ev/sleep 0.4)))
    (assert (= result '(false "boop")) "ev/cancel 1")))
(ev/sleep 0.1)
(ev/cancel fiber "boop")
(ev/sleep 0.1)

(assert-error "bad arity to ev/call" (ev/call inc 1 2 3))

# Subprocess
(let [p (os/spawn [(dyn :executable) "-e" `(print "hello")`] :p {:out :pipe})]
  (assert (deep= @"hello\n" (:read (p :out) :all)) "capture stdout from os/spawn")
  (os/proc-wait p))

(end-suite)