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;; SPDX-License-Identifier: EUPL-1.2
;; SPDX-FileCopyrightText: 2025 Uko Kokņevičs <perkontevs@gmail.com>
(defpackage :ukkoclot/test/rw-lock
(:documentation "Test-suite for :ukkoclot/src/rw-lock.")
(:use :c2cl :fiveam :ukkoclot/src/rw-lock)
(:import-from :bt2 :with-timeout))
(in-package :ukkoclot/test/rw-lock)
(def-suite :ukkoclot/rw-lock)
(in-suite :ukkoclot/rw-lock)
(test rw-lock.typep
(is (typep (make-rw-lock) 'rw-lock)))
(test rw-lock-p
(is (rw-lock-p (make-rw-lock))))
(test acquire-read-lock.no-contention
(with-timeout (5)
(let ((lock (make-rw-lock)))
(is-true (acquire-read-lock lock :wait t))
(is (rw-lock-p (release-read-lock lock)))
(is-true (acquire-read-lock lock :wait nil))
(is (rw-lock-p (release-read-lock lock))))))
(test acquire-read-lock.multiple
(with-timeout (5)
(let ((lock (make-rw-lock)))
(is-true (acquire-read-lock lock :wait t))
(is-true (acquire-read-lock lock :wait nil))
(is-true (acquire-read-lock lock :wait t))
(is (rw-lock-p (release-read-lock lock)))
(is (rw-lock-p (release-read-lock lock)))
(is (rw-lock-p (release-read-lock lock))))))
(test release-read-lock.failing
(let ((lock (make-rw-lock)))
(signals error (release-read-lock lock))
(is-true (acquire-write-lock lock :wait nil))
(signals error (release-read-lock lock))))
(test acquire-write-lock.no-contention
(let ((lock (make-rw-lock)))
(is-true (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))
(is-true (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))))
(test acquire-write-lock.contention
(let ((lock (make-rw-lock)))
(is-true (acquire-write-lock lock :wait nil))
(is-false (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))))
(test acquire-write-lock.failing
(let ((lock (make-rw-lock)))
(signals error (release-write-lock lock))
(is-true (acquire-read-lock lock :wait nil))
(signals error (release-write-lock lock))))
(test acquire-read&write-lock.contention
(let ((lock (make-rw-lock)))
(is-true (acquire-read-lock lock :wait nil))
(is-true (acquire-read-lock lock :wait nil))
(is-false (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-read-lock lock)))
(is (rw-lock-p (release-read-lock lock)))
(is-true (acquire-write-lock lock :wait nil))
(is-false (acquire-read-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))))
(test with-read-lock.simple
(let ((lock (make-rw-lock)))
(with-read-lock (lock)
(is-true (acquire-read-lock lock :wait nil))
(is (rw-lock-p (release-read-lock lock)))
(is-false (acquire-write-lock lock :wait nil)))
(is-true (acquire-read-lock lock :wait nil))
(is (rw-lock-p (release-read-lock lock)))
(is-true (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))))
(test with-write-lock.simple
(let ((lock (make-rw-lock)))
(with-write-lock (lock)
(is-false (acquire-read-lock lock :wait nil))
(is-false (acquire-write-lock lock :wait nil)))
(is-true (acquire-read-lock lock :wait nil))
(is (rw-lock-p (release-read-lock lock)))
(is-true (acquire-write-lock lock :wait nil))
(is (rw-lock-p (release-write-lock lock)))))
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