[unit-tests] copier and mem_pool tests.

More to come

unit-tests/mem_pool_t.cc

@@ -0,0 +1,97 @@
+// Copyright (C) 2016 Red Hat, Inc. All rights reserved.
+//
+// This file is part of the thin-provisioning-tools source.
+//
+// thin-provisioning-tools is free software: you can redistribute it
+// and/or modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3 of
+// the License, or (at your option) any later version.
+//
+// thin-provisioning-tools 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 General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with thin-provisioning-tools.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+#include "gmock/gmock.h"
+#include "block-cache/mem_pool.h"
+#include "test_utils.h"
+
+#include <fcntl.h>
+
+using namespace boost;
+using namespace std;
+using namespace test;
+using namespace testing;
+
+//----------------------------------------------------------------
+
+namespace {
+	class MempoolTests : public Test {
+	public:
+		bool aligned(void *data, size_t alignment) {
+			return (reinterpret_cast<size_t>(data) % alignment) == 0;
+		}
+
+	private:
+
+	};
+}
+
+//----------------------------------------------------------------
+
+TEST_F(MempoolTests, empty_test)
+{
+}
+
+TEST_F(MempoolTests, create_destroy_cycle)
+{
+	for (size_t bs = 64; bs <= 512; bs *= 2) {
+		mempool mp(bs, 4 * 1024 * 1024, bs);
+	}
+}
+
+TEST_F(MempoolTests, alignments_observed)
+{
+	for (size_t bs = 64; bs <= 512; bs *= 2) {
+		mempool mp(bs, 512 * 1024, bs);
+
+		for (unsigned i = 0; i < 100; i++) {
+			auto md = mp.alloc();
+
+			if (!md)
+				throw runtime_error("couldn't alloc");
+
+			ASSERT_THAT(aligned(*md, bs), Eq(true));
+		}
+	}
+}
+
+TEST_F(MempoolTests, alloc_free_cycle)
+{
+	mempool mp(512, 512 * 1024, 512);
+
+	for (unsigned i = 0; i < 10000; i++) {
+		auto md = mp.alloc();
+		mp.free(*md);
+	}
+}
+
+TEST_F(MempoolTests, exhaust_pool)
+{
+	mempool mp(512, 100 * 512, 512);
+
+	for (unsigned i = 0; i < 100; i++) {
+		auto md = mp.alloc();
+
+		ASSERT_THAT(*md, NEq(0));
+	}
+
+	auto md = mp.alloc();
+	ASSERT(*md, Eq(0));
+}
+
+//----------------------------------------------------------------