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Iosfwd (#586)

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* Solves #567 with <iosfwd> approach

* adds a little testing to not_null ostream
This commit is contained in:
menete 2017-11-14 17:14:20 +01:00 committed by Neil MacIntosh
parent d10ebc6555
commit 2ad93a38dd
2 changed files with 33 additions and 1 deletions
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2
include/gsl/pointers
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@ -21,7 +21,7 @@
#include <gsl/gsl_assert>
#include <iostream>
#include <iosfwd>
#include <memory>
#include <type_traits>

32
tests/notnull_tests.cpp
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@ -129,6 +129,38 @@ TEST_CASE("TestNotNullConstructors")
std::make_shared<int>(10)); // shared_ptr<int> is nullptr assignable
}
template<typename T>
void ostream_helper(T v)
{
not_null<T*> p(&v);
{
std::ostringstream os;
std::ostringstream ref;
os << p;
ref << &v;
CHECK(os.str() == ref.str());
}
{
std::ostringstream os;
std::ostringstream ref;
os << *p;
ref << v;
CHECK(os.str() == ref.str());
}
}
TEST_CASE("TestNotNullostream")
{
ostream_helper<int>(17);
ostream_helper<float>(21.5f);
ostream_helper<double>(3.4566e-7f);
ostream_helper<char>('c');
ostream_helper<uint16_t>(0x0123u);
ostream_helper<const char*>("cstring");
ostream_helper<std::string>("string");
}
TEST_CASE("TestNotNullCasting")
{
MyBase base;