[unit-tests] copier and mem_pool tests.

More to come

unit-tests/copier_t.cc

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+// 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/copier.h"
+#include "test_utils.h"
+
+
+#include <fcntl.h>
+
+using namespace boost;
+using namespace std;
+using namespace test;
+using namespace testing;
+
+//----------------------------------------------------------------
+
+namespace {
+	class temp_file {
+	public:
+		temp_file(string const &name_base, unsigned meg_size)
+			: path_(gen_path(name_base)) {
+
+			int fd = ::open(path_.c_str(), O_CREAT | O_RDWR, 0666);
+			if (fd < 0)
+				throw runtime_error("couldn't open file");
+
+			if (::fallocate(fd, 0, 0, 1024 * 1024 * meg_size))
+				throw runtime_error("couldn't fallocate");
+
+			::close(fd);
+		}
+
+		~temp_file() {
+			::unlink(path_.c_str());
+		}
+
+		string const &get_path() const {
+			return path_;
+		}
+
+	private:
+		static string gen_path(string const &base) {
+			return string("./") + base + string(".tmp");
+		}
+
+		string path_;
+	};
+
+	class CopierTests : public Test {
+	public:
+		CopierTests()
+			: src_file_("copy_src", 32),
+			  dest_file_("copy_dest", 32),
+			  copier_(src_file_.get_path(),
+				  dest_file_.get_path(),
+				  64, 1 * 1024 * 1024) {
+		}
+
+		copier &get_copier() {
+			return copier_;
+		}
+
+	private:
+		temp_file src_file_;
+		temp_file dest_file_;
+
+		copier copier_;
+	};
+}
+
+//----------------------------------------------------------------
+
+TEST_F(CopierTests, empty_test)
+{
+	// Copy first block
+	copy_op op1(0, 1, 0);
+	get_copier().issue(op1);
+	auto mop = get_copier().wait();
+
+	if (mop) {
+		cerr << "op completed\n";
+	} else {
+		cerr << "no op completed\n";
+	}
+}
+
+//----------------------------------------------------------------