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rose-ash/lib/haskell/tests/program-person.sx
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haskell: Phase 14 conformance — person.hs (7/7) + config.hs (10/10), Phase 14 complete
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
2026-05-07 17:28:28 +00:00

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;; person.hs — record type with accessors, update, deriving Show.
;;
;; Exercises Phase 14: data with record syntax, accessor functions,
;; record creation, record update, deriving Show on a record.
(define
hk-person-source
"data Person = Person { name :: String, age :: Int } deriving (Show)\n\nalice = Person { name = \"alice\", age = 30 }\nbob = Person { name = \"bob\", age = 25 }\n\nbirthday p = p { age = age p + 1 }\n")
(hk-test
"person.hs — alice's name"
(hk-deep-force (hk-run (str hk-person-source "main = name alice")))
"alice")
(hk-test
"person.hs — alice's age"
(hk-deep-force (hk-run (str hk-person-source "main = age alice")))
30)
(hk-test
"person.hs — birthday adds one year"
(hk-deep-force
(hk-run (str hk-person-source "main = age (birthday alice)")))
31)
(hk-test
"person.hs — birthday preserves name"
(hk-deep-force
(hk-run (str hk-person-source "main = name (birthday alice)")))
"alice")
(hk-test
"person.hs — show alice"
(hk-deep-force (hk-run (str hk-person-source "main = show alice")))
"Person \"alice\" 30")
(hk-test
"person.hs — bob has different name"
(hk-deep-force (hk-run (str hk-person-source "main = name bob")))
"bob")
(hk-test
"person.hs — pattern match in function"
(hk-deep-force
(hk-run
(str
hk-person-source
"greet (Person { name = n }) = \"Hi, \" ++ n\nmain = greet alice")))
"Hi, alice")
{:fails hk-test-fails :pass hk-test-pass :fail hk-test-fail}