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Add one more test for optional

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git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@333252 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marshall Clow
2018-05-25 02:22:54 +00:00
parent 2fac2d790f
commit 756163dbc1
1 changed files with 14 additions and 5 deletions
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19
test/std/utilities/optional/optional.object/optional.object.ctor/deduct.pass.cpp
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@@ -25,20 +25,29 @@ int main()
{ {
// Test the explicit deduction guides // Test the explicit deduction guides
{ {
// optional(T) // optional(T)
std::optional opt(5); std::optional opt(5);
static_assert(std::is_same_v<decltype(opt), std::optional<int>>, ""); static_assert(std::is_same_v<decltype(opt), std::optional<int>>, "");
assert(static_cast<bool>(opt)); assert(static_cast<bool>(opt));
assert(*opt == 5); assert(*opt == 5);
} }
{ {
// optional(T) // optional(T)
std::optional opt(A{}); std::optional opt(A{});
static_assert(std::is_same_v<decltype(opt), std::optional<A>>, ""); static_assert(std::is_same_v<decltype(opt), std::optional<A>>, "");
assert(static_cast<bool>(opt)); assert(static_cast<bool>(opt));
} }
// Test the implicit deduction guides // Test the implicit deduction guides
{
// optional(const optional &);
std::optional<char> source('A');
std::optional opt(source);
static_assert(std::is_same_v<decltype(opt), std::optional<char>>, "");
assert(static_cast<bool>(opt) == static_cast<bool>(source));
assert(*opt == *source);
}
} }