Add a read-write lock & a testsuite

1 files changed, 79 insertions, 0 deletions

diff --git a/test/rw-lock.lisp b/test/rw-lock.lisp
new file mode 100644
index 0000000..4460398
--- /dev/null
+++ b/test/rw-lock.lisp
@@ -0,0 +1,79 @@
+;; 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 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-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)))))