SERVER-27743: Implement LogicalTime

1 files changed, 101 insertions, 0 deletions

diff --git a/src/mongo/db/logical_time_test.cpp b/src/mongo/db/logical_time_test.cpp
new file mode 100644
index 00000000000..dbff22f8ce3
--- /dev/null
+++ b/src/mongo/db/logical_time_test.cpp
@@ -0,0 +1,101 @@
+/**
+ *    Copyright (C) 2017 MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or  modify
+ *    it under the terms of the GNU Affero General Public License, version 3,
+ *    as published by the Free Software Foundation.
+ *
+ *    This program 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 Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the GNU Affero General Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+
+#include "mongo/db/logical_time.h"
+#include "mongo/bson/timestamp.h"
+#include "mongo/db/signed_logical_time.h"
+#include "mongo/db/time_proof_service.h"
+#include "mongo/platform/basic.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+namespace {
+
+TEST(LogicalTime, comparisons) {
+    Timestamp tX(1);
+    Timestamp tY(2);
+
+    ASSERT_TRUE(tX < tY);
+
+    ASSERT_TRUE(LogicalTime(tX) < LogicalTime(tY));
+    ASSERT_TRUE(LogicalTime(tX) <= LogicalTime(tY));
+    ASSERT_TRUE(LogicalTime(tY) > LogicalTime(tX));
+    ASSERT_TRUE(LogicalTime(tY) >= LogicalTime(tX));
+    ASSERT_TRUE(LogicalTime(tX) != LogicalTime(tY));
+    ASSERT_TRUE(LogicalTime(tX) == LogicalTime(tX));
+
+    ASSERT_FALSE(LogicalTime(tX) > LogicalTime(tY));
+    ASSERT_FALSE(LogicalTime(tX) >= LogicalTime(tY));
+    ASSERT_FALSE(LogicalTime(tY) < LogicalTime(tX));
+    ASSERT_FALSE(LogicalTime(tY) <= LogicalTime(tX));
+    ASSERT_FALSE(LogicalTime(tX) == LogicalTime(tY));
+    ASSERT_FALSE(LogicalTime(tX) != LogicalTime(tX));
+}
+
+TEST(LogicalTime, roundtrip) {
+    Timestamp tX(1);
+    auto tY = LogicalTime(tX).asTimestamp();
+
+    ASSERT_TRUE(tX == tY);
+}
+
+TEST(LogicalTime, addTicks) {
+    Timestamp tX(1);
+    Timestamp tY(2);
+
+    auto lT = LogicalTime(tX);
+    lT.addTicks(1);
+
+    ASSERT_TRUE(tY == lT.asTimestamp());
+}
+
+TEST(LogicalTime, addTicksConst) {
+    Timestamp tX(1);
+    Timestamp tY(2);
+
+    const auto lT = LogicalTime(tX);
+    auto lQ = lT.addTicks(1);
+
+    ASSERT_TRUE(tX == lT.asTimestamp());
+    ASSERT_TRUE(tY == lQ.asTimestamp());
+}
+
+TEST(SignedLogicalTime, roundtrip) {
+    Timestamp tX(1);
+    TimeProofService tps;
+    auto time = LogicalTime(tX);
+    auto proof = tps.getProof(time);
+
+    SignedLogicalTime signedTime(time, proof);
+    ASSERT_TRUE(time == signedTime.getTime());
+    ASSERT_TRUE(proof == signedTime.getProof());
+}
+
+}  // unnamed namespace
+}  // namespace mongo