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/*----------------------------------------------------------------------
Test program for edm::propagate_const class.
----------------------------------------------------------------------*/
#include <catch.hpp>
#include <memory>
#include "FWCore/Utilities/interface/get_underlying_safe.h"
#include "FWCore/Utilities/interface/propagate_const.h"
namespace {
class ConstChecker {
public:
int value() { return 0; }
int const value() const { return 1; }
};
// used to check that edm::propagate_const<T*> works with incomplete types
class Incomplete;
} // namespace
TEST_CASE("propagate_const basic operations", "[propagate_const]") {
SECTION("test for edm::propagate_const<T*>") {
ConstChecker checker;
edm::propagate_const<ConstChecker*> pChecker(&checker);
REQUIRE(0 == pChecker.get()->value());
REQUIRE(pChecker.get()->value() == pChecker->value());
REQUIRE(pChecker.get()->value() == (*pChecker).value());
REQUIRE(0 == get_underlying_safe(pChecker)->value());
const edm::propagate_const<ConstChecker*> pConstChecker(&checker);
REQUIRE(1 == pConstChecker.get()->value());
REQUIRE(pConstChecker.get()->value() == pConstChecker->value());
REQUIRE(pConstChecker.get()->value() == (*pConstChecker).value());
REQUIRE(1 == get_underlying_safe(pConstChecker)->value());
}
SECTION("test for edm::propagate_const<shared_ptr<T>>") {
auto checker = std::make_shared<ConstChecker>();
edm::propagate_const<std::shared_ptr<ConstChecker>> pChecker(checker);
REQUIRE(0 == pChecker.get()->value());
REQUIRE(pChecker.get()->value() == pChecker->value());
REQUIRE(pChecker.get()->value() == (*pChecker).value());
REQUIRE(0 == get_underlying_safe(pChecker)->value());
const edm::propagate_const<std::shared_ptr<ConstChecker>> pConstChecker(checker);
REQUIRE(1 == pConstChecker.get()->value());
REQUIRE(pConstChecker.get()->value() == pConstChecker->value());
REQUIRE(pConstChecker.get()->value() == (*pConstChecker).value());
REQUIRE(1 == get_underlying_safe(pConstChecker)->value());
}
// test for edm::propagate_const<unique_ptr<T>>
SECTION("test for edm::propagate_const<unique_ptr<T>>") {
auto checker = std::make_unique<ConstChecker>();
edm::propagate_const<std::unique_ptr<ConstChecker>> pChecker(std::move(checker));
REQUIRE(0 == pChecker.get()->value());
REQUIRE(pChecker.get()->value() == pChecker->value());
REQUIRE(pChecker.get()->value() == (*pChecker).value());
REQUIRE(0 == get_underlying_safe(pChecker)->value());
const edm::propagate_const<std::unique_ptr<ConstChecker>> pConstChecker(std::make_unique<ConstChecker>());
REQUIRE(1 == pConstChecker.get()->value());
REQUIRE(pConstChecker.get()->value() == pConstChecker->value());
REQUIRE(pConstChecker.get()->value() == (*pConstChecker).value());
}
SECTION("test for edm::propagate_const<T*> with incomplete types") {
Incomplete* ptr = nullptr;
edm::propagate_const<Incomplete*> pIncomplete(ptr);
REQUIRE(nullptr == pIncomplete.get());
}
}
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