is_null() [5/24]

template<typename optional_t >

static void xtd::tunit::valid::is_null ( const std::optional< optional_t > &  opt )

inlinestatic

Validates that the optional is std::nullopt.

Parameters

opt	The optional to check is std::nullopt.

Examples

std::optional<std::string> s1;
std::optional<std::string> s2 = "Anything";
xtd::tunit::valid::is_null(s1); // test ok.
xtd::tunit::valid::is_null(s2); // test fails.