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rose-ash/lib/dream/tests/session.sx
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dream: signed session cookies (tamper-evident sid) + 11 tests
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 15:10:03 +00:00

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;; lib/dream/tests/session.sx — cookies, store, session round-trip, signed cookies.
(define dream-ss-pass 0)
(define dream-ss-fail 0)
(define dream-ss-fails (list))
(define
dream-ss-test
(fn
(name actual expected)
(if
(= actual expected)
(set! dream-ss-pass (+ dream-ss-pass 1))
(begin
(set! dream-ss-fail (+ dream-ss-fail 1))
(append! dream-ss-fails {:name name :actual actual :expected expected})))))
;; ── cookie parsing ─────────────────────────────────────────────────
(define dream-ss-creq (dream-request "GET" "/" {:Cookie "a=1; b=2; dream.session=s9"} ""))
(dream-ss-test "parse cookie a" (dream-cookie dream-ss-creq "a") "1")
(dream-ss-test "parse cookie b" (dream-cookie dream-ss-creq "b") "2")
(dream-ss-test
"parse session cookie"
(dream-cookie dream-ss-creq "dream.session")
"s9")
(dream-ss-test "missing cookie nil" (dream-cookie dream-ss-creq "z") nil)
(dream-ss-test
"no cookie header"
(dream-cookie (dream-request "GET" "/" {} "") "a")
nil)
;; ── cookie building ────────────────────────────────────────────────
(dream-ss-test
"build basic cookie"
(dr/build-cookie "k" "v" {})
"k=v; Path=/")
(dream-ss-test
"build httponly samesite"
(dr/build-cookie "sid" "x" {:http-only true :same-site "Lax"})
"sid=x; Path=/; HttpOnly; SameSite=Lax")
(dream-ss-test
"build max-age"
(dr/build-cookie "k" "v" {:max-age 0})
"k=v; Path=/; Max-Age=0")
(dream-ss-test
"set-cookie appends"
(len
(dream-resp-cookies
(dream-set-cookie (dream-html "x") "k" "v" {})))
1)
(dream-ss-test
"set-cookie two"
(len
(dream-resp-cookies
(dream-set-cookie
(dream-set-cookie (dream-html "x") "a" "1" {})
"b"
"2"
{})))
2)
(dream-ss-test
"drop cookie max-age 0"
(contains?
(first (dream-resp-cookies (dream-drop-cookie (dream-html "x") "k")))
"Max-Age=0")
true)
;; ── signed cookie values ───────────────────────────────────────────
(dream-ss-test
"sign/unsign roundtrip"
(dream-cookie-unsign "k" (dream-cookie-sign "k" "s5"))
"s5")
(dream-ss-test
"unsign wrong secret"
(dream-cookie-unsign "k2" (dream-cookie-sign "k" "s5"))
nil)
(dream-ss-test "unsign tampered" (dream-cookie-unsign "k" "s5.999") nil)
(dream-ss-test "unsign no dot" (dream-cookie-unsign "k" "s5") nil)
(dream-ss-test "unsign nil" (dream-cookie-unsign "k" nil) nil)
;; ── in-memory store ────────────────────────────────────────────────
(define dream-ss-store (dream-memory-sessions))
(define dream-ss-sid (dream-ss-store {:op "session/create"}))
(dream-ss-test "create returns id" dream-ss-sid "s1")
(dream-ss-test "new session exists" (dream-ss-store {:op "session/exists" :sid "s1"}) true)
(dream-ss-test "absent session not exists" (dream-ss-store {:op "session/exists" :sid "s99"}) false)
(dream-ss-test "get missing key nil" (dream-ss-store {:key "k" :op "session/get" :sid "s1"}) nil)
(dream-ss-store {:val "ada" :key "user" :op "session/set" :sid "s1"})
(dream-ss-test "set then get" (dream-ss-store {:key "user" :op "session/get" :sid "s1"}) "ada")
(dream-ss-store {:val "admin" :key "role" :op "session/set" :sid "s1"})
(dream-ss-test "load all fields" (dream-ss-store {:op "session/load" :sid "s1"}) {:role "admin" :user "ada"})
(dream-ss-test "second create distinct" (dream-ss-store {:op "session/create"}) "s2")
(dream-ss-store {:op "session/clear" :sid "s1"})
(dream-ss-test "clear removes" (dream-ss-store {:op "session/exists" :sid "s1"}) false)
;; ── middleware round-trip ──────────────────────────────────────────
(define dream-ss-backend (dream-memory-sessions))
(define
dream-ss-counter-h
(fn
(req)
(let
((n (or (dream-session-field req "count") 0)))
(begin
(dream-set-session-field req "count" (+ n 1))
(dream-text (str "count=" (+ n 1)))))))
(define dream-ss-app ((dream-sessions dream-ss-backend) dream-ss-counter-h))
(define dream-ss-r1 (dream-ss-app (dream-request "GET" "/" {} "")))
(dream-ss-test "first body count=1" (dream-resp-body dream-ss-r1) "count=1")
(dream-ss-test
"first sets one cookie"
(len (dream-resp-cookies dream-ss-r1))
1)
(dream-ss-test
"session cookie name+id"
(contains? (first (dream-resp-cookies dream-ss-r1)) "dream.session=s1")
true)
(dream-ss-test
"session cookie httponly"
(contains? (first (dream-resp-cookies dream-ss-r1)) "HttpOnly")
true)
(define dream-ss-r2 (dream-ss-app (dream-request "GET" "/" {:Cookie "dream.session=s1"} "")))
(dream-ss-test "second body count=2" (dream-resp-body dream-ss-r2) "count=2")
(dream-ss-test
"second sets no cookie"
(len (dream-resp-cookies dream-ss-r2))
0)
(define dream-ss-r3 (dream-ss-app (dream-request "GET" "/" {:Cookie "dream.session=s1"} "")))
(dream-ss-test "third body count=3" (dream-resp-body dream-ss-r3) "count=3")
(define dream-ss-r4 (dream-ss-app (dream-request "GET" "/" {:Cookie "dream.session=bogus"} "")))
(dream-ss-test
"bogus id starts fresh"
(dream-resp-body dream-ss-r4)
"count=1")
(dream-ss-test
"bogus id gets new cookie"
(len (dream-resp-cookies dream-ss-r4))
1)
;; ── session-all + invalidate via middleware ────────────────────────
(dream-ss-test
"session-all shows count"
(dream-session-all
(assoc (dream-request "GET" "/" {} "") :dream-session {:io dream-ss-backend :sid "s1"}))
{:count 3})
(define
dream-ss-invalidate-h
(fn (req) (begin (dream-invalidate-session req) (dream-text "bye"))))
(define
dream-ss-app3
((dream-sessions dream-ss-backend) dream-ss-invalidate-h))
(dream-ss-app3 (dream-request "GET" "/" {:Cookie "dream.session=s1"} ""))
(dream-ss-test "invalidate clears store" (dream-ss-backend {:op "session/exists" :sid "s1"}) false)
;; ── signed session middleware ──────────────────────────────────────
(define dream-ss-sbackend (dream-memory-sessions))
(define
dream-ss-sapp
((dream-sessions-signed dream-ss-sbackend "topsecret")
(fn (req) (dream-text (dream-session-id req)))))
(define dream-ss-sr1 (dream-ss-sapp (dream-request "GET" "/" {} "")))
(dream-ss-test "signed first sid" (dream-resp-body dream-ss-sr1) "s1")
(dream-ss-test
"signed cookie is signed"
(contains? (first (dream-resp-cookies dream-ss-sr1)) "dream.session=s1.")
true)
;; forged plaintext sid (no signature) is rejected -> a fresh session is made
(dream-ss-test
"forged plaintext rejected -> new session"
(dream-resp-body (dream-ss-sapp (dream-request "GET" "/" {:Cookie "dream.session=s1"} "")))
"s2")
;; a validly-signed cookie reuses the session
(define dream-ss-signed-val (dream-cookie-sign "topsecret" "s1"))
(define dream-ss-sr3 (dream-ss-sapp (dream-request "GET" "/" {:Cookie (str "dream.session=" dream-ss-signed-val)} "")))
(dream-ss-test "valid signed reuses s1" (dream-resp-body dream-ss-sr3) "s1")
(dream-ss-test
"valid signed sets no new cookie"
(len (dream-resp-cookies dream-ss-sr3))
0)
;; a cookie signed with the wrong secret is rejected
(dream-ss-test
"wrong-secret signed rejected"
(=
(dream-resp-body (dream-ss-sapp (dream-request "GET" "/" {:Cookie (str "dream.session=" (dream-cookie-sign "other" "s1"))} "")))
"s1")
false)
(define dream-ss-tests-run! (fn () {:total (+ dream-ss-pass dream-ss-fail) :passed dream-ss-pass :failed dream-ss-fail :fails dream-ss-fails}))