tomato/test/lib/emitter/main.cpp

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#include <gtest/gtest.h>
#include <entt/core/attribute.h>
#include "types.h"
ENTT_API void emit(test_emitter &);
TEST(Lib, Emitter) {
test_emitter emitter;
int value{};
ASSERT_EQ(value, 0);
emitter.on<message>([&](message msg, test_emitter &owner) {
value = msg.payload;
owner.erase<message>();
});
emit(emitter);
ASSERT_EQ(value, 42);
}