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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * semaphoretest.cc
+ *
+ * Tue Jun 14 22:04:24 CEST 2016
+ * Copyright 2016 Bent Bisballe Nyeng
+ * deva@aasimon.org
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <cassert>
+
+#include <chrono>
+#include <iostream>
+
+#include "../src/semaphore.h"
+
+std::chrono::nanoseconds dist(const std::chrono::duration<float>& a,
+ const std::chrono::duration<float>& b)
+{
+ if(a > b)
+ {
+ return std::chrono::duration_cast<std::chrono::nanoseconds>(a - b);
+ }
+
+ return std::chrono::duration_cast<std::chrono::nanoseconds>(b - a);
+}
+
+class SemaphoreTest
+ : public CppUnit::TestFixture
+{
+ CPPUNIT_TEST_SUITE(SemaphoreTest);
+ CPPUNIT_TEST(timeoutTest);
+ CPPUNIT_TEST_SUITE_END();
+
+public:
+ void setUp() {}
+ void tearDown() {}
+
+ void timeoutTest()
+ {
+ Semaphore sem(0);
+
+ { // 1000ms timeout
+ auto start = std::chrono::steady_clock::now();
+ bool res = sem.wait(std::chrono::milliseconds(1000));
+ CPPUNIT_ASSERT(!res); // false means timeout
+ auto stop = std::chrono::steady_clock::now();
+
+ // Allow +/-1ms skew
+ CPPUNIT_ASSERT(dist((stop - start), std::chrono::milliseconds(1000))
+ < std::chrono::milliseconds(1));
+ }
+
+ { // 100ms timeout
+ auto start = std::chrono::steady_clock::now();
+ bool res = sem.wait(std::chrono::milliseconds(100));
+ CPPUNIT_ASSERT(!res); // false means timeout
+ auto stop = std::chrono::steady_clock::now();
+
+ // Allow +/-1ms skew
+ CPPUNIT_ASSERT(dist((stop - start), std::chrono::milliseconds(100))
+ < std::chrono::milliseconds(1));
+ }
+ }
+};
+
+// Registers the fixture into the 'registry'
+CPPUNIT_TEST_SUITE_REGISTRATION(SemaphoreTest);