SERVER-42049 IDLify MapReduce for use behind Mr Agg feature flag only

1 files changed, 159 insertions, 0 deletions

diff --git a/src/mongo/db/commands/map_reduce_parse_test.cpp b/src/mongo/db/commands/map_reduce_parse_test.cpp
new file mode 100644
index 00000000000..fa3533c19b3
--- /dev/null
+++ b/src/mongo/db/commands/map_reduce_parse_test.cpp
@@ -0,0 +1,159 @@
+/**
+ *    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/base/string_data.h"
+#include "mongo/bson/bsonmisc.h"
+#include "mongo/db/commands/map_reduce_gen.h"
+#include "mongo/idl/idl_parser.h"
+#include "mongo/util/assert_util.h"
+
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+namespace {
+
+// The parser treats Javascript objects as black boxes so there's no need for realistic examples
+// here.
+constexpr auto initJavascript = "init!"_sd;
+constexpr auto mapJavascript = "map!"_sd;
+constexpr auto reduceJavascript = "reduce!"_sd;
+constexpr auto finalizeJavascript = "finalize!"_sd;
+
+TEST(MapReduceParseTest, failedParse) {
+    auto ctx = IDLParserErrorContext("mapReduce");
+    // Missing fields.
+    ASSERT_THROWS(MapReduce::parse(ctx,
+                                   BSON(""
+                                        << ""
+                                        << "$db"
+                                        << "db")),
+                  DBException);
+    ASSERT_THROWS(MapReduce::parse(ctx,
+                                   BSON("mapReduce"
+                                        << "foo"
+                                        << "$db"
+                                        << "db")),
+                  DBException);
+    ASSERT_THROWS(MapReduce::parse(ctx,
+                                   BSON("map" << mapJavascript << "reduce" << reduceJavascript
+                                              << "out" << BSON("inline" << 1) << "$db"
+                                              << "db")),
+                  DBException);
+
+    // Extra fields.
+    ASSERT_THROWS(MapReduce::parse(ctx,
+                                   BSON("mapReduce"
+                                        << "theSource"
+                                        << "map" << mapJavascript << "reduce" << reduceJavascript
+                                        << "out" << BSON("inline" << 1) << "alloy"
+                                        << "chromium steel"
+                                        << "$db"
+                                        << "db")),
+                  DBException);
+    ASSERT_THROWS(MapReduce::parse(ctx,
+                                   BSON("mapReduce"
+                                        << "theSource"
+                                        << "map" << mapJavascript << "reduce" << reduceJavascript
+                                        << "out" << BSON("inline" << 1 << "notinline" << 0) << "$db"
+                                        << "db")),
+                  DBException);
+}
+
+TEST(MapReduceParseTest, parseOutputTypes) {
+    auto ctx = IDLParserErrorContext("mapReduce");
+
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << BSON("inline" << 1) << "$db"
+                          << "db"));
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << "theSink"
+                          << "$db"
+                          << "db"));
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << BSON("replace"
+                                  << "theSink"
+                                  << "db"
+                                  << "myDb")
+                          << "$db"
+                          << "db"));
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << BSON("merge"
+                                  << "theSink")
+                          << "$db"
+                          << "db"));
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << BSON("reduce"
+                                  << "theSink"
+                                  << "db"
+                                  << "myDb"
+                                  << "sharded" << true)
+                          << "$db"
+                          << "db"));
+    ASSERT(true);
+}
+
+TEST(MapReduceParseTest, parseAllOptionalFields) {
+    auto ctx = IDLParserErrorContext("mapReduce");
+
+    MapReduce::parse(ctx,
+                     BSON("mapReduce"
+                          << "theSource"
+                          << "map" << mapJavascript << "reduce" << reduceJavascript << "out"
+                          << BSON("inline" << 1) << "query"
+                          << BSON("author"
+                                  << "dave")
+                          << "sort" << BSON("bottlecaps" << 1) << "collation"
+                          << BSON("locale"
+                                  << "zh@collation=pinyin")
+                          << "limit" << 86 << "finalize" << finalizeJavascript << "scope"
+                          << BSON("global" << initJavascript) << "verbose" << false
+                          << "bypassDocumentValidation" << true << "writeConcern"
+                          << BSON("w" << 1 << "j" << false << "wtimeout" << 1498) << "$db"
+                          << "db"));
+}
+
+}  // namespace
+}  // namespace mongo