From 0f9afb1f15fe10f98f321b7901fb1330eafe6b69 Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Sun, 24 Jul 2016 10:35:34 +0200
Subject: Added semaphore unit test.

---
 test/Makefile.am      | 12 ++++++-
 test/semaphoretest.cc | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+), 1 deletion(-)
 create mode 100644 test/semaphoretest.cc

diff --git a/test/Makefile.am b/test/Makefile.am
index 1b4470d..e8d9a75 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -5,7 +5,8 @@ include $(top_srcdir)/src/Makefile.am.drumgizmo
 
 TESTS = resource engine gui resampler lv2 configfile audiocache \
 	audiocachefile audiocacheidmanager audiocacheeventhandler \
-	memchecker randomtest atomictest syncedsettingstest imagecachetest
+	memchecker randomtest atomictest syncedsettingstest imagecachetest \
+	semaphoretest
 
 check_PROGRAMS = $(TESTS)
 
@@ -164,3 +165,12 @@ imagecachetest_SOURCES = \
 	$(top_srcdir)/plugingui/colour.cc \
 	imagecachetest.cc \
 	test.cc
+
+semaphoretest_CXXFLAGS = -DOUTPUT=\"semaphoretest\" $(CPPUNIT_CFLAGS) \
+	-I$(top_srcdir)/src -I$(top_srcdir)/hugin
+semaphoretest_LDFLAGS = $(CPPUNIT_LIBS)
+semaphoretest_SOURCES = \
+	$(top_srcdir)/hugin/hugin.c \
+	$(top_srcdir)/src/semaphore.cc \
+	semaphoretest.cc \
+	test.cc
diff --git a/test/semaphoretest.cc b/test/semaphoretest.cc
new file mode 100644
index 0000000..3211930
--- /dev/null
+++ b/test/semaphoretest.cc
@@ -0,0 +1,87 @@
+/* -*- 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);
-- 
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