SERVER-23891 implement ShardId class

1 files changed, 107 insertions, 0 deletions

diff --git a/src/mongo/s/shard_id_test.cpp b/src/mongo/s/shard_id_test.cpp
new file mode 100644
index 00000000000..6393c9e9a9e
--- /dev/null
+++ b/src/mongo/s/shard_id_test.cpp
@@ -0,0 +1,107 @@
+/*    Copyright 2016 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/s/shard_id.h"
+
+#include "mongo/base/string_data.h"
+#include "mongo/platform/basic.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+namespace {
+
+using std::string;
+using namespace mongo;
+
+TEST(ShardId, Valid) {
+    ShardId shardId("my_shard_id");
+    ASSERT(shardId.isValid());
+}
+
+TEST(ShardId, Invalid) {
+    ShardId shardId("");
+    ASSERT(!shardId.isValid());
+}
+
+TEST(ShardId, Roundtrip) {
+    string shard_id_str("my_shard_id");
+    ShardId shardId(shard_id_str);
+    ASSERT(shard_id_str == shardId.toString());
+}
+
+TEST(ShardId, ToStringData) {
+    string shard_id_str("my_shard_id");
+    ShardId shardId(shard_id_str);
+    StringData stringData(shardId);
+    ASSERT(stringData == shard_id_str);
+}
+
+TEST(ShardId, Assign) {
+    ShardId shardId1("my_shard_id");
+    auto shardId2 = shardId1;
+    ASSERT(shardId1 == shardId2);
+}
+
+TEST(ShardId, Less) {
+    string a("aaa");
+    string a1("aaa");
+    string b("bbb");
+    ShardId sa(a);
+    ShardId sa1(a1);
+    ShardId sb(b);
+    ASSERT_EQUALS(sa < sa1, a < a1);
+    ASSERT_EQUALS(sb < sa1, b < a1);
+    ASSERT_EQUALS(sa < sb, a < b);
+}
+
+TEST(ShardId, Compare) {
+    string a("aaa");
+    string a1("aaa");
+    string b("bbb");
+    ShardId sa(a);
+    ShardId sa1(a1);
+    ShardId sb(b);
+    ASSERT_EQUALS(sa.compare(sa1), a.compare(a1));
+    ASSERT_EQUALS(sb.compare(sa1), b.compare(a1));
+    ASSERT_EQUALS(sa.compare(sb), a.compare(b));
+}
+
+TEST(ShardId, Equals) {
+    string a("aaa");
+    string a1("aaa");
+    string b("bbb");
+    ShardId sa(a);
+    ShardId sa1(a1);
+    ShardId sb(b);
+    ASSERT(sa == sa1);
+    ASSERT(sa != sb);
+    ASSERT(sa == "aaa");
+    ASSERT(sa != "bbb");
+}
+
+}  // namespace
+}  // namespace mongo