From 5de7d757a8a56249965cd724e0da26a9818948fc Mon Sep 17 00:00:00 2001
From: sha512sum <linuxnyasha@tutanota.com>
Date: Tue, 27 Feb 2024 22:19:19 +0000
Subject: [PATCH] Custom operator== in GoInterface now takes precedence

---
 include/utempl/go_interface.hpp |  5 +++++
 tests/go_interface.cpp          | 10 +++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/include/utempl/go_interface.hpp b/include/utempl/go_interface.hpp
index a3d7911..11c3301 100644
--- a/include/utempl/go_interface.hpp
+++ b/include/utempl/go_interface.hpp
@@ -85,6 +85,11 @@ struct GoInterface : Value {
         transformer(impl::TryGet<ConstexprString<boost::pfr::get_name<Is, Type>().size() + 1>{boost::pfr::get_name<Is, Type>().begin()}>(other))) && ...);
     }(std::make_index_sequence<boost::pfr::tuple_size_v<Value>>());
   };
+  template <typename T>
+  inline constexpr auto operator==(T&& other) const -> bool 
+        requires (requires(const Value& value){value == other;})  {
+    return static_cast<const Value&>(*this) == other;
+  };
 };
 
 } // namespace utempl
diff --git a/tests/go_interface.cpp b/tests/go_interface.cpp
index 7d5a317..b1f0436 100644
--- a/tests/go_interface.cpp
+++ b/tests/go_interface.cpp
@@ -7,6 +7,13 @@ struct SomeInterface {
 
 struct SomeStruct {
   int field;
+  friend auto operator==(const SomeInterface& a, const SomeStruct& b) -> bool {
+    return false;
+  };
+};
+
+struct SomeStruct2 {
+  int field;
 };
 
 TEST(GoInterface, Basic) {
@@ -18,5 +25,6 @@ TEST(GoInterface, Equal) {
   utempl::GoInterface<SomeInterface> obj(SomeStruct{1});
   EXPECT_EQ(obj, utempl::GoInterface{SomeInterface{1}});
   EXPECT_EQ(obj, SomeInterface{1});
-  EXPECT_EQ(obj, SomeStruct{1});
+  EXPECT_NE(obj, SomeStruct{1});
+  EXPECT_EQ(obj, SomeStruct2{1});
 };