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henryw374/same_thread_executor.clj

Created June 8, 2022 08:18
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clojure executorservice concurrency testing
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same_thread_executor.clj
(ns same-thread-executor
"handy in unit tests to have things happen straight away"
(:import (java.util.concurrent ExecutorService Future)))
(defn executor []
(reify ExecutorService
(^Future submit [_ ^Callable f]
(let [r (f)]
(reify Future
(get [_] r))))))
(comment
@(.submit (executor) (fn [] "yay"))
;=> "yay"
)
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