From 483eb2f56657e8e7f419ab1a4fab8dce9ade8609 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 27 Apr 2024 20:24:20 +0200
Subject: Adding upstream version 14.2.21.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 .../tests/unit/noncopyable_function_test.cc        | 87 ++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 src/seastar/tests/unit/noncopyable_function_test.cc

(limited to 'src/seastar/tests/unit/noncopyable_function_test.cc')

diff --git a/src/seastar/tests/unit/noncopyable_function_test.cc b/src/seastar/tests/unit/noncopyable_function_test.cc
new file mode 100644
index 00000000..dc19d752
--- /dev/null
+++ b/src/seastar/tests/unit/noncopyable_function_test.cc
@@ -0,0 +1,87 @@
+/*
+ * This file is open source software, licensed to you under the terms
+ * of the Apache License, Version 2.0 (the "License").  See the NOTICE file
+ * distributed with this work for additional information regarding copyright
+ * ownership.  You may not use this file except in compliance with the License.
+ *
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+/*
+ * Copyright (C) 2017 ScyllaDB Ltd.
+ */
+
+
+#define BOOST_TEST_MODULE core
+
+#include <boost/test/included/unit_test.hpp>
+#include <seastar/util/noncopyable_function.hh>
+
+using namespace seastar;
+
+BOOST_AUTO_TEST_CASE(basic_tests) {
+    struct s {
+        int f1(int x) const { return x + 1; }
+        int f2(int x) { return x + 2; }
+        static int f3(int x) { return x + 3; }
+        int operator()(int x) const { return x + 4; }
+    };
+    s obj, obj2;
+    auto fn1 = noncopyable_function<int (const s*, int)>(&s::f1);
+    auto fn2 = noncopyable_function<int (s*, int)>(&s::f2);
+    auto fn3 = noncopyable_function<int (int)>(&s::f3);
+    auto fn4 = noncopyable_function<int (int)>(std::move(obj2));
+    BOOST_REQUIRE_EQUAL(fn1(&obj, 1), 2);
+    BOOST_REQUIRE_EQUAL(fn2(&obj, 1), 3);
+    BOOST_REQUIRE_EQUAL(fn3(1), 4);
+    BOOST_REQUIRE_EQUAL(fn4(1), 5);
+}
+
+template <size_t Extra>
+struct payload {
+    static unsigned live;
+    char extra[Extra];
+    std::unique_ptr<int> v;
+    payload(int x) : v(std::make_unique<int>(x)) { ++live; }
+    payload(payload&& x) noexcept : v(std::move(x.v)) { ++live; }
+    void operator=(payload&&) = delete;
+    ~payload() { --live; }
+    int operator()() const { return *v; }
+};
+
+template <size_t Extra>
+unsigned payload<Extra>::live;
+
+template <size_t Extra>
+void do_move_tests() {
+    using payload = ::payload<Extra>;
+    auto f1 = noncopyable_function<int ()>(payload(3));
+    BOOST_REQUIRE_EQUAL(payload::live, 1u);
+    BOOST_REQUIRE_EQUAL(f1(), 3);
+    auto f2 = noncopyable_function<int ()>();
+    BOOST_CHECK_THROW(f2(), std::bad_function_call);
+    f2 = std::move(f1);
+    BOOST_CHECK_THROW(f1(), std::bad_function_call);
+    BOOST_REQUIRE_EQUAL(f2(), 3);
+    BOOST_REQUIRE_EQUAL(payload::live, 1u);
+    f2 = {};
+    BOOST_REQUIRE_EQUAL(payload::live, 0u);
+    BOOST_CHECK_THROW(f2(), std::bad_function_call);
+}
+
+BOOST_AUTO_TEST_CASE(small_move_tests) {
+    do_move_tests<1>();
+}
+
+BOOST_AUTO_TEST_CASE(large_move_tests) {
+    do_move_tests<1000>();
+}
+
-- 
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