first commit

libraries/M5Utility/test/optional/emplace.cpp

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+#include <gtest/gtest.h>
+#include <m5_utility/stl/optional.hpp>
+#include <utility>
+#include <tuple>
+
+TEST(Optional, Emplace)
+{
+    m5::stl::optional<std::pair<std::pair<int, int>, std::pair<double, double>>> i;
+    i.emplace(std::piecewise_construct, std::make_tuple(0, 2), std::make_tuple(3, 4));
+    EXPECT_TRUE(i->first.first == 0);
+    EXPECT_TRUE(i->first.second == 2);
+    EXPECT_TRUE(i->second.first == 3);
+    EXPECT_TRUE(i->second.second == 4);
+}
+
+struct A {
+    A()
+    {
+        throw std::exception();
+    }
+};
+
+TEST(Optional, EmplaceWithException)
+{
+    m5::stl::optional<A> a;
+    EXPECT_ANY_THROW(a.emplace());
+}