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diff --git a/src/mongo/db/query/canonical_query_test_util.h b/src/mongo/db/query/canonical_query_test_util.h
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+/**
+ *    Copyright (C) 2021-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/db/query/canonical_query.h"
+
+namespace mongo {
+
+const NamespaceString nss("test.collection");
+
+std::unique_ptr<CanonicalQuery> canonicalize(const BSONObj& queryObj);
+std::unique_ptr<CanonicalQuery> canonicalize(StringData queryStr);
+std::unique_ptr<CanonicalQuery> canonicalize(BSONObj query,
+                                             BSONObj sort,
+                                             BSONObj proj,
+                                             BSONObj collation);
+std::unique_ptr<CanonicalQuery> canonicalize(const char* queryStr,
+                                             const char* sortStr,
+                                             const char* projStr,
+                                             const char* collationStr);
+std::unique_ptr<CanonicalQuery> canonicalize(const char* queryStr,
+                                             const char* sortStr,
+                                             const char* projStr,
+                                             long long skip,
+                                             long long limit,
+                                             const char* hintStr,
+                                             const char* minStr,
+                                             const char* maxStr);
+std::unique_ptr<CanonicalQuery> canonicalize(const char* queryStr,
+                                             const char* sortStr,
+                                             const char* projStr,
+                                             long long skip,
+                                             long long limit,
+                                             const char* hintStr,
+                                             const char* minStr,
+                                             const char* maxStr,
+                                             bool explain);
+}  // namespace mongo