#include "optional.hpp"
#include <gtest/gtest.h>

TEST(Optional, SafeDivide) {
    EXPECT_DOUBLE_EQ(*cpp17::safe_divide(10, 2), 5.0);
    EXPECT_FALSE(cpp17::safe_divide(1, 0).has_value());
}

TEST(Optional, FindUser) {
    EXPECT_EQ(*cpp17::find_user({"Ada", "Grace"}, "Grace"), 1U);
}

TEST(Optional, FirstPositive) {
    EXPECT_EQ(*cpp17::first_positive({-1, 0, 3, 4}), 3);
    EXPECT_FALSE(cpp17::first_positive({-1, -2}).has_value());
}