7f68a5872c
The ex-info value exposes :jolt/type/:message/:data/:cause via get (it's the
caught value too), so the accessors are pure over get — no host surface. The
constructor (ex-info) stays in Janet since it wires into throw. A thrown
non-ex-info arrives wrapped as {:jolt/type :jolt/exception :value v}; the
overlay unwraps that, matching the old Janet helper. ex-cause now unwraps and
returns nil (not false) on non-ex values, matching Clojure. Added non-ex-info
and string regression cases.
41 lines
2 KiB
Text
41 lines
2 KiB
Text
# Specification: exceptions — try/catch/finally, throw, ex-info.
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(use ../support/harness)
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(defspec "exceptions / try-catch"
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["catch :default" ":caught"
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"(try (throw (ex-info \"boom\" {})) (catch :default e :caught))"]
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["catch by class" ":caught"
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"(try (throw (ex-info \"boom\" {})) (catch Exception e :caught))"]
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["catch binds error" "\"boom\""
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"(try (throw (ex-info \"boom\" {})) (catch :default e (ex-message e)))"]
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["no throw -> body" "1"
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"(try 1 (catch :default e :caught))"]
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["finally runs on ok" "2"
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"(let [a (atom 0)] (try 2 (finally (reset! a 9))) )"]
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["finally runs on throw" "9"
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"(let [a (atom 0)] (try (throw (ex-info \"x\" {})) (catch :default e nil) (finally (reset! a 9))) @a)"]
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["catch value of body" "5"
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"(try (+ 2 3) (catch :default e 0))"])
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(defspec "exceptions / assert"
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["assert true -> ok" ":ok" "(do (assert true) :ok)"]
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["assert expr -> ok" ":ok" "(do (assert (= 1 1)) :ok)"]
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["assert false throws" :throws "(assert false)"]
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["assert nil throws" :throws "(assert nil)"])
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(defspec "exceptions / ex-info"
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["ex-message" "\"oops\"" "(ex-message (ex-info \"oops\" {}))"]
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["ex-data" "{:k 1}" "(ex-data (ex-info \"oops\" {:k 1}))"]
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["ex-data via catch" "{:code 42}"
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"(try (throw (ex-info \"e\" {:code 42})) (catch :default e (ex-data e)))"]
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["ex-cause" "true"
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"(let [c (ex-info \"root\" {})] (= c (ex-cause (ex-info \"outer\" {} c))))"]
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["propagates to outer" "\"inner\""
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"(try (try (throw (ex-info \"inner\" {})) (finally nil)) (catch :default e (ex-message e)))"]
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["catch binds thrown value" "42"
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"(try (throw 42) (catch :default e e))"]
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["rethrow preserves ex" "\"inner\""
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"(try (try (throw (ex-info \"inner\" {})) (catch :default e (throw e))) (catch :default e (ex-message e)))"]
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["ex-data on non-ex" "nil" "(ex-data 42)"]
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["ex-cause on non-ex" "nil" "(ex-cause {:k 1})"]
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["ex-message of string" "\"hi\"" "(ex-message \"hi\")"])
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