217 lines
9.8 KiB
Clojure
217 lines
9.8 KiB
Clojure
(ns aging-session.memory_test
|
|
(:require
|
|
[clojure.test :refer :all]
|
|
[ring.middleware.session.store :refer :all]
|
|
[aging-session.memory :refer :all]))
|
|
|
|
(defn ->basic-aging-memory-store
|
|
[& [opts]]
|
|
(aging-memory-store
|
|
30
|
|
(merge
|
|
{:refresh-on-read true
|
|
:refresh-on-write true
|
|
:sweep-threshold nil
|
|
:sweep-interval 15}
|
|
opts)))
|
|
|
|
(deftest basic-read-empty
|
|
(testing "Test session reads when there is no session value for that key."
|
|
(let [as (->basic-aging-memory-store)]
|
|
(is (nil? (read-session as "mykey"))
|
|
"returns nil for non-existent session read"))))
|
|
|
|
(deftest basic-write
|
|
(testing "Test session writes and reads."
|
|
(let [as (->basic-aging-memory-store)]
|
|
(write-session as "mykey" {:a 1})
|
|
(is (= (read-session as "mykey") {:a 1})
|
|
"session value was written")
|
|
(write-session as "mykey" {:a 2})
|
|
(is (= (read-session as "mykey") {:a 2})
|
|
"session value was updated"))))
|
|
|
|
(deftest basic-delete
|
|
(testing "Test session delete."
|
|
(let [as (->basic-aging-memory-store)]
|
|
(write-session as "mykey" {:a 1})
|
|
(is (= (read-session as "mykey") {:a 1})
|
|
"session value was written")
|
|
(delete-session as "mykey")
|
|
(is (nil? (read-session as "mykey"))
|
|
"session value is no longer present"))))
|
|
|
|
(deftest timestamp-on-creation
|
|
(testing "Test the behaviour where each entry's timestamp is set only on session creation."
|
|
(let [as (->basic-aging-memory-store
|
|
{:refresh-on-read false
|
|
:refresh-on-write false})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(let [ts1 (read-timestamp as "mykey")]
|
|
(is (integer? ts1)
|
|
"timestamp was set on session write")
|
|
(write-session as "mykey" {:foo 2})
|
|
(Thread/sleep 10)
|
|
(is (= ts1 (read-timestamp as "mykey"))
|
|
"timestamp is unchanged for this session entry after it was updated")
|
|
(is (= (read-session as "mykey") {:foo 2})
|
|
"updated session entry value was written successfully")))))
|
|
|
|
(deftest timestamp-on-write-only
|
|
(testing "Test the behaviour where each entry's timestamp is refreshed on write (not read)."
|
|
(let [as (->basic-aging-memory-store
|
|
{:refresh-on-read false
|
|
:refresh-on-write true})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(let [ts1 (read-timestamp as "mykey")]
|
|
(is (integer? ts1)
|
|
"timestamp was set on session write")
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session value can be read")
|
|
(Thread/sleep 10)
|
|
(is (= ts1 (read-timestamp as "mykey"))
|
|
"reading the session value did not update its timestamp")
|
|
(write-session as "mykey" {:foo 2})
|
|
(Thread/sleep 10)
|
|
(is (not (= ts1 (read-timestamp as "mykey")))
|
|
"timestamp of the session entry was updated after its value was updated")
|
|
(is (= (read-session as "mykey") {:foo 2})
|
|
"session value was updated successfully")))))
|
|
|
|
(deftest timestamp-on-read-only
|
|
(testing "Test the behaviour where each entry's timestamp is refreshed on read (not write)."
|
|
(let [as (->basic-aging-memory-store
|
|
{:refresh-on-read true
|
|
:refresh-on-write false})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(let [ts1 (read-timestamp as "mykey")]
|
|
(is (integer? ts1)
|
|
"timestamp was set on session write")
|
|
(Thread/sleep 10)
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session value can be read")
|
|
(let [ts2 (read-timestamp as "mykey")]
|
|
(is (not (= ts1 ts2))
|
|
"timestamp of the session entry was updated after its value was read")
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session value can still be read successfully")
|
|
(Thread/sleep 10)
|
|
(let [ts3 (read-timestamp as "mykey")]
|
|
(write-session as "mykey" {:foo 2})
|
|
(Thread/sleep 10)
|
|
(is (= ts3 (read-timestamp as "mykey"))
|
|
"timestamp of the session entry was not updated after its value was written")
|
|
(is (= (read-session as "mykey") {:foo 2})
|
|
"session value was updated successfully")
|
|
(Thread/sleep 10)
|
|
(is (not (= ts3 (read-timestamp as "mykey")))
|
|
"timestamp of the session entry was updated after its new value was read")))))))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
|
|
(deftest individual-session-entries-are-expired-when-read
|
|
(testing "Individual session entries are expired appropriately when read, independently of the sweep thread."
|
|
(let [as (aging-memory-store
|
|
1 ; expire after 1 second
|
|
{:sweep-threshold 1 ; sweeper thread write threshold is after every single write
|
|
:sweep-interval 10 ; sweeper thread tries to run every 10 seconds
|
|
})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session entry was written")
|
|
(Thread/sleep 1500) ; little delay, but too short for sweeper thread to have run
|
|
(is (nil? (read-session as "mykey"))
|
|
"session entry should no longer be present"))))
|
|
|
|
(deftest sweeper-thread-expires-entries-at-interval-only-when-threshold-reached
|
|
(testing "When a threshold is specified, the sweeper thread expires entries whenever it runs only when the operation (write) threshold is reached."
|
|
(let [as (aging-memory-store
|
|
1 ; expire after 1 second
|
|
{:refresh-on-read true
|
|
:refresh-on-write true
|
|
:sweep-threshold 5 ; only trigger sweep after 5 writes
|
|
:sweep-interval 1 ; sweeper thread tries to run every 1 second
|
|
})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(Thread/sleep 2000) ; wait long enough for session ttl to elapse
|
|
; key should still exist, even though it's expired (not enough writes have occurred)
|
|
(is (integer? (read-timestamp as "mykey"))
|
|
"session entry should still be present even though it has expired")
|
|
|
|
; key should exist for three more writes
|
|
(write-session as "other-key" {:foo 1})
|
|
(is (integer? (read-timestamp as "mykey"))
|
|
"session entry should still be present even though it has expired")
|
|
(write-session as "other-key" {:foo 1})
|
|
(is (integer? (read-timestamp as "mykey"))
|
|
"session entry should still be present even though it has expired")
|
|
(write-session as "other-key" {:foo 1})
|
|
(is (integer? (read-timestamp as "mykey"))
|
|
"session entry should still be present even though it has expired")
|
|
|
|
; on the fifth write and after 1 second, key should not exist
|
|
(write-session as "other-key" {:foo 1})
|
|
(Thread/sleep 2000) ; allow time for sweeper thread to run
|
|
(is (nil? (read-timestamp as "mykey"))
|
|
"session entry should have been removed now"))))
|
|
|
|
(deftest sweeper-thread-expires-entries-at-interval-with-no-threshold-set
|
|
(testing "When a threshold is NOT specified, the sweeper thread expires entries whenever it runs."
|
|
(let [as (aging-memory-store
|
|
1 ; expire after 1 second
|
|
{:refresh-on-read true
|
|
:refresh-on-write true
|
|
:sweep-threshold nil ; no sweeper thread threshold
|
|
:sweep-interval 1 ; sweeper thread tries to run every 1 second
|
|
})]
|
|
(write-session as "mykey" {:foo 1})
|
|
(Thread/sleep 20)
|
|
(is (integer? (read-timestamp as "mykey"))
|
|
"session entry should still be present")
|
|
|
|
; do nothing in the mean time (no write operations)
|
|
|
|
(Thread/sleep 2000) ; wait long enough for session ttl to elapse
|
|
(is (nil? (read-timestamp as "mykey"))
|
|
"session entry should have been removed now")
|
|
|
|
; now lets do this again, but read the value (thus, triggering a timestamp refresh) a couple times
|
|
|
|
(is (nil? (read-session as "mykey"))
|
|
"session entry should not be there yet")
|
|
(write-session as "mykey" {:foo 1})
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session entry should now be present")
|
|
|
|
; repeatedly re-read the session for a period of time over the session store ttl so as to not let
|
|
; it expire (because refresh-on-read is enabled)
|
|
(doseq [_ (range 10)]
|
|
(Thread/sleep 200)
|
|
(is (= (read-session as "mykey") {:foo 1})
|
|
"session entry should still be present"))
|
|
|
|
; now wait long enough without reading to let it expire
|
|
|
|
(Thread/sleep 2000)
|
|
(is (nil? (read-session as "mykey"))
|
|
"session entry should be gone now")
|
|
|
|
)))
|
|
|
|
(deftest refresh-on-read-nonexistent-key-then-sweep
|
|
(testing "Test an empty session read (with refresh-on-read enabled) then check that the expiry sweep still works"
|
|
(let [as (aging-memory-store
|
|
1 ; expire after 1 second
|
|
{:refresh-on-read true
|
|
:sweep-threshold 1 ; sweep runs after every write
|
|
:sweep-interval 1 ; sweep thread tries to run every 1 second
|
|
})]
|
|
(is (nil? (read-session as "foo"))
|
|
"no session entry present for this key")
|
|
(Thread/sleep 1500)
|
|
; read again to trigger the sweep
|
|
(is (nil? (read-session as "foo"))
|
|
"still no session entry present for this key"))))
|
|
|
|
#_(run-tests)
|