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

TEST(Expected, ParseInt) {
    EXPECT_EQ(*cpp23::parse_int("42"), 42);
    EXPECT_EQ(cpp23::parse_int(""), std::unexpected(cpp23::ParseError::EmptyInput));
}

TEST(Expected, SafeSqrt) {
    EXPECT_DOUBLE_EQ(*cpp23::safe_sqrt(9), 3.0);
    EXPECT_FALSE(cpp23::safe_sqrt(-1).has_value());
}

TEST(Expected, ChainParseAndDouble) {
    EXPECT_EQ(*cpp23::chain_parse_and_double("21"), 42);
}