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#include <algorithm>
#include <cassert>
#include <memory>
#include "catch.hpp"
#include "DataFormats/Common/interface/OwnVector.h"
#include "FWCore/Utilities/interface/propagate_const.h"
namespace ownvector_test {
struct Base {
virtual ~Base();
virtual Base* clone() const = 0;
};
Base::~Base() {}
struct Derived : Base {
explicit Derived(int n);
Derived(Derived const& other);
Derived& operator=(Derived const& other);
virtual ~Derived();
void swap(Derived& other);
virtual Derived* clone() const;
edm::propagate_const<int*> pointer;
};
void Derived::swap(Derived& other) { std::swap(pointer, other.pointer); }
Derived::Derived(int n) : pointer(new int(n)) {}
Derived::Derived(Derived const& other) : pointer(new int(*other.pointer)) {}
Derived& Derived::operator=(Derived const& other) {
Derived temp(other);
swap(temp);
return *this;
}
Derived::~Derived() { delete pointer.get(); }
Derived* Derived::clone() const { return new Derived(*this); }
void swap(Derived& a, Derived& b) { a.swap(b); }
void do_assign(edm::OwnVector<Base>& iLHS, edm::OwnVector<Base>& iRHS) { iLHS = iRHS; }
} // namespace ownvector_test
using namespace ownvector_test;
TEST_CASE("test OwnVector", "[OwnVector]") {
SECTION("copy_good_vec") {
// v1 is perfectly fine...
edm::OwnVector<Base> v1;
Base* p = new Derived(100);
v1.push_back(p);
//v1.push_back(new Derived(100));
// But what if we copy him?
edm::OwnVector<Base> v2(v1);
}
SECTION("assign_to_other") {
edm::OwnVector<Base> v1;
Base* p = new Derived(100);
v1.push_back(p);
edm::OwnVector<Base> v2;
v2 = v1;
}
SECTION("assign_to_self") {
// Self-assignment happens, often by accident...
edm::OwnVector<Base> v1;
v1.push_back(new Derived(100));
auto& v2 = v1;
do_assign(v1, v2);
}
SECTION("pop_one") {
edm::OwnVector<Base> v1;
v1.push_back(new Derived(100));
v1.pop_back();
}
SECTION("back_with_null_pointer") {
edm::OwnVector<Base> v;
Base* p = 0;
v.push_back(p);
REQUIRE_THROWS_AS(v.back(), edm::Exception);
}
SECTION("take_an_rvalue") {
edm::OwnVector<Base> v;
v.push_back(new Derived(101));
Derived d(102);
v.push_back(d.clone());
}
SECTION("take_an_lvalue") {
edm::OwnVector<Base> v1;
Base* p = new Derived(100);
v1.push_back(p);
REQUIRE(p == nullptr);
}
SECTION("take_an_auto_ptr") {
edm::OwnVector<Base> v1;
std::unique_ptr<Base> p = std::make_unique<Derived>(100);
v1.push_back(std::move(p));
REQUIRE(p.get() == nullptr);
}
SECTION("set_at_index") {
edm::OwnVector<Base> v1;
Base* p = new Derived(100);
Base* backup = p;
v1.push_back(p);
REQUIRE(p == nullptr);
REQUIRE(&v1[0] == backup);
Base* p2 = new Derived(101);
Base* backup2 = p2;
REQUIRE(backup2 != backup);
v1.set(0, p2);
REQUIRE(p2 == nullptr);
REQUIRE(&v1[0] == backup2);
}
SECTION("insert_with_iter") {
edm::OwnVector<Base> v1;
Base *p[3], *backup[3];
for (int i = 0; i < 3; ++i) {
backup[i] = p[i] = new Derived(100 + i);
}
v1.push_back(p[0]);
v1.push_back(p[2]);
v1.insert(v1.begin() + 1, p[1]);
REQUIRE(p[0] == nullptr);
REQUIRE(p[1] == nullptr);
REQUIRE(p[2] == nullptr);
REQUIRE(&v1[0] == backup[0]);
REQUIRE(&v1[1] == backup[1]);
REQUIRE(&v1[2] == backup[2]);
}
SECTION("no crash") {
edm::OwnVector<Base> vec;
vec.push_back(new Derived(100));
edm::OwnVector<Base>* p = new edm::OwnVector<Base>;
p->push_back(new Derived(2));
delete p;
}
}
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