SERVER-1599 Add support for index hint to update command

1 files changed, 76 insertions, 0 deletions

diff --git a/src/mongo/db/query/hint_parser_test.cpp b/src/mongo/db/query/hint_parser_test.cpp
new file mode 100644
index 00000000000..03b49102007
--- /dev/null
+++ b/src/mongo/db/query/hint_parser_test.cpp
@@ -0,0 +1,76 @@
+
+/**
+ *    Copyright (C) 2019-present MongoDB, Inc.
+ *
+ *    This program is free software: you can redistribute it and/or modify
+ *    it under the terms of the Server Side Public License, version 1,
+ *    as published by MongoDB, Inc.
+ *
+ *    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
+ *    Server Side Public License for more details.
+ *
+ *    You should have received a copy of the Server Side Public License
+ *    along with this program. If not, see
+ *    <http://www.mongodb.com/licensing/server-side-public-license>.
+ *
+ *    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 Server Side 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/platform/basic.h"
+
+
+#include "mongo/bson/bsonmisc.h"
+#include "mongo/bson/bsonobjbuilder.h"
+#include "mongo/db/query/hint_parser.h"
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+
+namespace {
+
+TEST(CommandParsers, ParseKeyPatternHint) {
+    auto hint = BSON("hint" << BSON("x" << 5));
+    ASSERT_BSONOBJ_EQ(parseHint(hint.firstElement()), BSON("x" << 5));
+}
+
+TEST(CommandParsers, ParseIndexNameHint) {
+    auto hint = BSON("hint"
+                     << "x_1");
+    ASSERT_BSONOBJ_EQ(parseHint(hint.firstElement()),
+                      BSON("$hint"
+                           << "x_1"));
+}
+
+TEST(CommandParsers, BadHintType) {
+    auto hint = BSON("hint" << 1);
+    ASSERT_THROWS_CODE(
+        parseHint(hint.firstElement()), AssertionException, ErrorCodes::FailedToParse);
+}
+
+TEST(CommandParsers, SerializeNonEmptyHint) {
+    auto hint = BSON("x" << 1);
+    BSONObjBuilder bob;
+    serializeHintToBSON(hint, "hint", &bob);
+    ASSERT_BSONOBJ_EQ(bob.obj(), BSON("hint" << BSON("x" << 1)));
+}
+
+TEST(CommandParsers, ShouldNotSerializeEmptyHint) {
+    BSONObjBuilder bob;
+    serializeHintToBSON(BSONObj(), "hint", &bob);
+    ASSERT_FALSE(bob.obj().hasField("hint"));
+}
+}  // namespace
+
+}  // namespace mongo
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