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add and_other and or_other to toml::result

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effectively same as Rust's std::Result::and and or.
This commit is contained in:
ToruNiina
2018-12-17 18:24:13 +09:00
parent 13c1f9c259
commit 7b3684b54e
2 changed files with 67 additions and 0 deletions
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30
tests/test_result.cpp
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@@ -409,3 +409,33 @@ BOOST_AUTO_TEST_CASE(test_or_else)
BOOST_CHECK_EQUAL(mapped.unwrap_err(), "hogehoge");
}
}
BOOST_AUTO_TEST_CASE(test_and_or_other)
{
{
const toml::result<int, std::string> r1(toml::ok(42));
const toml::result<int, std::string> r2(toml::err<std::string>("foo"));
BOOST_CHECK_EQUAL(r1, r1.or_other(r2));
BOOST_CHECK_EQUAL(r2, r1.and_other(r2));
BOOST_CHECK_EQUAL(42, r1.or_other(r2).unwrap());
BOOST_CHECK_EQUAL("foo", r1.and_other(r2).unwrap_err());
}
{
auto r1_gen = []() -> toml::result<int, std::string> {
return toml::ok(42);
};
auto r2_gen = []() -> toml::result<int, std::string> {
return toml::err<std::string>("foo");
};
const auto r3 = r1_gen();
const auto r4 = r2_gen();
BOOST_CHECK_EQUAL(r3, r1_gen().or_other (r2_gen()));
BOOST_CHECK_EQUAL(r4, r1_gen().and_other(r2_gen()));
BOOST_CHECK_EQUAL(42, r1_gen().or_other (r2_gen()).unwrap());
BOOST_CHECK_EQUAL("foo", r1_gen().and_other(r2_gen()).unwrap_err());
}
}