fix chaotic: fixup chrono milliseconds convert

Tests: протестировано CI

---

Pull Request resolved: #1195

Co-authored-by: antoshkka <antoshkka@userver.tech>
commit_hash:9a73d342ab276357c57b27707df398165dbff73c

Author: 2 people

chaotic/include/userver/chaotic/io/std/chrono/milliseconds.hpp

@@ -14,10 +14,13 @@ USERVER_NAMESPACE_BEGIN
 namespace chaotic::convert {
 
 template <typename T>
+requires std::is_integral_v<T> || std::is_floating_point_v<T>
 T Convert(std::chrono::milliseconds value, chaotic::convert::To<T>) {
     return utils::numeric_cast<T>(value.count());
 }
 
+std::string Convert(const std::chrono::milliseconds& value, chaotic::convert::To<std::string>);
+
 std::chrono::milliseconds Convert(const std::string& str, chaotic::convert::To<std::chrono::milliseconds>);
 
 std::chrono::milliseconds Convert(std::string_view str, chaotic::convert::To<std::chrono::milliseconds>);

chaotic/integration_tests/schemas/custom_cpp_type.yaml

@@ -28,6 +28,9 @@ definitions:
             integer:
                 type: integer
                 x-usrv-cpp-type: std::chrono::milliseconds
+            ms:
+                type: string
+                x-usrv-cpp-type: std::chrono::milliseconds
             sizet:
                 type: integer
                 minimum: 0

chaotic/integration_tests/tests/render/custom.cpp

@@ -22,6 +22,18 @@ TEST(Custom, Int) {
     EXPECT_EQ(custom2, custom);
 }
 
+TEST(Custom, Ms) {
+    auto json = formats::json::MakeObject("ms", "12ms");
+    auto custom = json.As<ns::ObjWithCustom>();
+    EXPECT_EQ(custom.ms, std::chrono::milliseconds(12));
+
+    auto json_back = formats::json::ValueBuilder{custom}.ExtractValue();
+    EXPECT_EQ(json_back, json);
+
+    const auto custom2 = FromJsonString(ToString(json), formats::parse::To<ns::ObjWithCustom>{});
+    EXPECT_EQ(custom2, custom);
+}
+
 TEST(Custom, String) {
     auto json = formats::json::MakeObject("string", "make love");
     auto custom = json.As<ns::ObjWithCustom>();

chaotic/src/chaotic/io/std/chrono/milliseconds.cpp

@@ -2,10 +2,16 @@
 
 #include <userver/utils/string_to_duration.hpp>
 
+#include <fmt/format.h>
+
 USERVER_NAMESPACE_BEGIN
 
 namespace chaotic::convert {
 
+std::string Convert(const std::chrono::milliseconds& value, chaotic::convert::To<std::string>) {
+    return fmt::format("{}ms", value.count());
+}
+
 std::chrono::milliseconds Convert(const std::string& str, chaotic::convert::To<std::chrono::milliseconds>) {
     return std::chrono::milliseconds{utils::StringToDuration(str)};
 }