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diff --git a/src/mongo/db/commands/invalidate_view_catalog_command.cpp b/src/mongo/db/commands/invalidate_view_catalog_command.cpp
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+++ b/src/mongo/db/commands/invalidate_view_catalog_command.cpp
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+/**
+ * Copyright (C) 2018 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/platform/basic.h"
+
+#include "mongo/db/catalog_raii.h"
+#include "mongo/db/commands.h"
+#include "mongo/db/commands/test_commands_enabled.h"
+
+namespace mongo {
+/**
+ * Testing-only command that invalidates a database's view catalog.
+ */
+class InvalidateViewCatalogCmd final : public BasicCommand {
+public:
+    InvalidateViewCatalogCmd() : BasicCommand("invalidateViewCatalog") {}
+
+    Status checkAuthForOperation(OperationContext* opCtx,
+                                 const std::string& dbname,
+                                 const BSONObj& cmdObj) const final {
+        // No auth checks as this is a testing-only command.
+        return Status::OK();
+    }
+
+    bool adminOnly() const final {
+        return false;
+    }
+
+    bool maintenanceMode() const final {
+        return true;
+    }
+
+    bool maintenanceOk() const final {
+        return true;
+    }
+
+    AllowedOnSecondary secondaryAllowed(ServiceContext*) const final {
+        return AllowedOnSecondary::kAlways;
+    }
+
+    bool supportsWriteConcern(const BSONObj& cmd) const final {
+        return false;
+    }
+
+    std::string help() const final {
+        return "invalidate view catalog\n"
+               "Internal command for testing only. Invalidates a database's view catalog,\n"
+               "forcing a reload on the next view operation.\n";
+    }
+
+    bool run(OperationContext* opCtx,
+             const std::string& dbName,
+             const BSONObj& cmdObj,
+             BSONObjBuilder& result) final {
+        AutoGetDb dblock(opCtx, dbName, LockMode::MODE_IS);
+        auto db = dblock.getDb();
+        uassert(ErrorCodes::NamespaceNotFound,
+                str::stream() << "database " << dbName << " does not exist",
+                db);
+
+        db->getViewCatalog()->invalidate();
+        return true;
+    }
+};
+
+MONGO_REGISTER_TEST_COMMAND(InvalidateViewCatalogCmd);
+
+}  // namespace mongo