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rose-ash/lib/dream/tests/error.sx
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dream: error-handling middleware (dream-catch) + status reason phrases + 15 tests
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-07 15:03:17 +00:00

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;; lib/dream/tests/error.sx — status phrases + dream-catch.
(define dream-er-pass 0)
(define dream-er-fail 0)
(define dream-er-fails (list))
(define
dream-er-test
(fn
(name actual expected)
(if
(= actual expected)
(set! dream-er-pass (+ dream-er-pass 1))
(begin
(set! dream-er-fail (+ dream-er-fail 1))
(append! dream-er-fails {:name name :actual actual :expected expected})))))
;; ── status phrases ─────────────────────────────────────────────────
(dream-er-test "200 OK" (dream-status-text 200) "OK")
(dream-er-test "404 Not Found" (dream-status-text 404) "Not Found")
(dream-er-test
"405 phrase"
(dream-status-text 405)
"Method Not Allowed")
(dream-er-test
"500 phrase"
(dream-status-text 500)
"Internal Server Error")
(dream-er-test "unknown phrase" (dream-status-text 599) "Unknown")
(dream-er-test "status line" (dream-status-line 404) "404 Not Found")
(dream-er-test
"status page status"
(dream-status (dream-status-page 403))
403)
(dream-er-test
"status page body"
(dream-resp-body (dream-status-page 403))
"<h1>403 Forbidden</h1>")
;; ── dream-catch ────────────────────────────────────────────────────
(define dream-er-boom (fn (req) (error "kaboom")))
(define dream-er-ok (fn (req) (dream-text "fine")))
(dream-er-test
"catch normal passes through"
(dream-resp-body
((dream-catch dream-er-ok) (dream-request "GET" "/" {} "")))
"fine")
(dream-er-test
"catch error -> 500"
(dream-status
((dream-catch dream-er-boom) (dream-request "GET" "/" {} "")))
500)
(dream-er-test
"catch 500 body"
(dream-resp-body
((dream-catch dream-er-boom) (dream-request "GET" "/" {} "")))
"<h1>500 Internal Server Error</h1>")
;; custom error page receives the error
(define
dream-er-custom
(dream-catch-with (fn (req e) (dream-text (str "ERR:" e)))))
(dream-er-test
"custom error page"
(dream-resp-body
((dream-er-custom dream-er-boom) (dream-request "GET" "/" {} "")))
"ERR:kaboom")
(dream-er-test
"custom passes normal through"
(dream-resp-body
((dream-er-custom dream-er-ok) (dream-request "GET" "/" {} "")))
"fine")
;; catch composes around a router
(define
dream-er-app
(dream-catch
(dream-router
(list (dream-get "/boom" dream-er-boom) (dream-get "/ok" dream-er-ok)))))
(dream-er-test
"router error caught"
(dream-status (dream-er-app (dream-request "GET" "/boom" {} "")))
500)
(dream-er-test
"router ok intact"
(dream-resp-body (dream-er-app (dream-request "GET" "/ok" {} "")))
"fine")
(define dream-er-tests-run! (fn () {:total (+ dream-er-pass dream-er-fail) :passed dream-er-pass :failed dream-er-fail :fails dream-er-fails}))