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diff --git a/src/mongo/db/query/util/deferred_test.cpp b/src/mongo/db/query/util/deferred_test.cpp
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+/**
+ *    Copyright (C) 2023-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/util/deferred.h"
+
+#include "mongo/unittest/unittest.h"
+
+namespace mongo {
+using std::string;
+using namespace std::string_literals;
+
+
+TEST(DeferredTest, EagerInitialization) {
+    Deferred<string> eager{"someString"};
+    ASSERT_TRUE(eager.isInitialized());
+    ASSERT_EQ(eager.get(), "someString"s);
+    ASSERT_EQ(*eager, "someString"s);
+}
+
+TEST(DeferredTest, DeferredInitialization) {
+    size_t initializationCount = 0;
+    Deferred<string> deferred{[&]() {
+        initializationCount++;
+        return "someString"s;
+    }};
+    ASSERT_FALSE(deferred.isInitialized());
+
+    // Ensure the deferred object wasn't initialized on creation.
+    ASSERT_EQ(initializationCount, 0);
+
+    // Ensure that the deferred object is initialized on pointer dereferences.
+    ASSERT_FALSE(deferred->empty());
+    ASSERT_TRUE(deferred.isInitialized());
+
+    ASSERT_EQ(initializationCount, 1);
+
+    // Ensure that the content of the deferred object is equal to its raw counterpart, while also
+    // verifing that it is initialized at most once.
+    ASSERT_EQ(deferred.get(), "someString"s);
+    ASSERT_EQ(initializationCount, 1);
+}
+
+TEST(DeferredTest, DeferredInitializationWithOneArgument) {
+    size_t initializationCount = 0;
+    Deferred<string, const string&> deferred{[&](const string& input) {
+        initializationCount++;
+        return "{" + input + "}";
+    }};
+
+    // Ensure the deferred object wasn't initialized on creation.
+    ASSERT_EQ(initializationCount, 0);
+
+    // Ensure that the content of the deferred object is equal to its raw counterpart, while also
+    // verifing that it is initialized at most once.
+    ASSERT_EQ(deferred.get("more curlies"), "{more curlies}"s);
+    ASSERT_EQ(initializationCount, 1);
+
+    // Note that the value is cached, so it's not really valid to call it with a different argument.
+    ASSERT_EQ(deferred.get("merganser"), "{more curlies}"s);
+    ASSERT_EQ(initializationCount, 1);
+}
+
+TEST(DeferredTest, DeferredInitializationWithTwoArgs) {
+    Deferred<string, const string&, const string&> deferred{
+        [&](const auto& input, const auto& prefix) { return prefix + input; }};
+
+    ASSERT_EQ(deferred.get("cowbell", "more "), "more cowbell"s);
+    ASSERT_EQ(deferred.get("cowbell", "more "), "more cowbell"s);
+    ASSERT_EQ(deferred.get("cowbell", "less?"), "more cowbell"s);
+    ASSERT_EQ(deferred.get("tests", "better"), "more cowbell"s);
+}
+}  // namespace mongo