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#define BOOST_TEST_MODULE LazyPointer
#include <boost/test/unit_test.hpp>
#include "lazyPointer.h"
using namespace AdHoc;
class Test {
public:
explicit Test(int v) :
val(v)
{
}
const int val;
};
using TestLazyPointer = LazyPointer<Test>;
using RawLazyPointer = LazyPointer<int, int *>;
/// LCOV_EXCL_START (diagnostics)
BOOST_TEST_DONT_PRINT_LOG_VALUE(TestLazyPointer);
BOOST_TEST_DONT_PRINT_LOG_VALUE(RawLazyPointer);
/// LCOV_EXCL_STOP
static
TestLazyPointer::pointer_type
factory()
{
return std::make_shared<Test>(3);
}
static
TestLazyPointer::pointer_type
paramFactory(const std::string & str)
{
return std::make_shared<Test>(str.length());
}
BOOST_AUTO_TEST_CASE ( islazy )
{
TestLazyPointer p([]{ return factory(); });
BOOST_REQUIRE_EQUAL(false, p.hasValue());
Test * t = p.get();
BOOST_REQUIRE(t);
BOOST_REQUIRE(p);
BOOST_REQUIRE_EQUAL(true, p.hasValue());
BOOST_REQUIRE_EQUAL(p, t);
BOOST_REQUIRE_EQUAL(3, t->val);
BOOST_REQUIRE_EQUAL(3, p->val);
}
BOOST_AUTO_TEST_CASE ( preinit )
{
Test * t = new Test(4);
TestLazyPointer p(t);
BOOST_REQUIRE_EQUAL(true, p.hasValue());
BOOST_REQUIRE_EQUAL(p, t);
BOOST_REQUIRE_EQUAL(4, p->val);
}
BOOST_AUTO_TEST_CASE ( reset )
{
Test * t = new Test(4);
TestLazyPointer p(t);
BOOST_REQUIRE_EQUAL(true, p.hasValue());
BOOST_REQUIRE_EQUAL(4, p->val);
p = nullptr;
BOOST_REQUIRE_EQUAL(true, p.hasValue());
BOOST_REQUIRE_EQUAL(true, !p);
p = []{ return factory(); };
BOOST_REQUIRE_EQUAL(false, p.hasValue());
BOOST_REQUIRE(p.get());
BOOST_REQUIRE_EQUAL(true, p.hasValue());
BOOST_REQUIRE_EQUAL(3, p->val);
}
BOOST_AUTO_TEST_CASE ( nondefault )
{
TestLazyPointer p([]{ return paramFactory("some string"); });
BOOST_REQUIRE_EQUAL(false, p.hasValue());
BOOST_REQUIRE_EQUAL(11, (*p).val);
BOOST_REQUIRE_EQUAL(true, p.hasValue());
}
BOOST_AUTO_TEST_CASE( rawPointerNull )
{
RawLazyPointer null;
BOOST_REQUIRE(null.hasValue());
BOOST_REQUIRE(!null);
BOOST_REQUIRE(!null.get());
}
BOOST_AUTO_TEST_CASE( rawPointerNonNull )
{
RawLazyPointer value(new int(3));
BOOST_REQUIRE(value.hasValue());
BOOST_REQUIRE(value);
BOOST_REQUIRE(value.get());
BOOST_REQUIRE_EQUAL(*value, 3);
int * x = (int *)value;
BOOST_REQUIRE_EQUAL(*x, 3);
delete x;
}
int *
rawFactory(const std::string & s)
{
return new int(s.length());
}
BOOST_AUTO_TEST_CASE( rawPointerFactory )
{
RawLazyPointer value([]{ return rawFactory(std::string("four")); });
BOOST_REQUIRE(!value.hasValue());
BOOST_REQUIRE_EQUAL(*value, 4);
BOOST_REQUIRE(value.hasValue());
delete (int *)value;
}
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