initial

external/entt/test/lib/locator/shared/lib.cpp

@@ -0,0 +1,11 @@
+#include <entt/core/attribute.h>
+#include <entt/locator/locator.hpp>
+#include "../../../common/boxed_type.h"
+
+ENTT_API void set_up(const entt::locator<test::boxed_int>::node_type &handle) {
+    entt::locator<test::boxed_int>::reset(handle);
+}
+
+ENTT_API void use_service(int value) {
+    entt::locator<test::boxed_int>::value().value = value;
+}

external/entt/test/lib/locator/shared/main.cpp

@@ -0,0 +1,24 @@
+#include <gtest/gtest.h>
+#include <entt/core/attribute.h>
+#include <entt/locator/locator.hpp>
+#include "../../../common/boxed_type.h"
+
+ENTT_API void set_up(const entt::locator<test::boxed_int>::node_type &);
+ENTT_API void use_service(int);
+
+TEST(Lib, Locator) {
+    entt::locator<test::boxed_int>::emplace().value = 4;
+
+    ASSERT_EQ(entt::locator<test::boxed_int>::value().value, 4);
+
+    set_up(entt::locator<test::boxed_int>::handle());
+    use_service(3);
+
+    ASSERT_EQ(entt::locator<test::boxed_int>::value().value, 3);
+
+    // service updates do not propagate across boundaries
+    entt::locator<test::boxed_int>::emplace().value = 4;
+    use_service(3);
+
+    ASSERT_EQ(entt::locator<test::boxed_int>::value().value, 4);
+}