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utils: add helpers for assoc-pairs

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Add some unit-test, too.
This commit is contained in:
Dirk-Jan C. Binnema
2022-09-28 22:36:57 +03:00
parent ca04ae4d65
commit 9e60ebb683
2 changed files with 72 additions and 1 deletions
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28
lib/utils/tests/test-utils.cc
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@ -298,6 +298,33 @@ test_error()
g_clear_error(&err);
}
enum struct TestEnum { A, B, C };
constexpr AssocPairs<TestEnum, std::string_view, 3>
test_epairs = {{
{TestEnum::A, "a"},
{TestEnum::B, "b"},
{TestEnum::C, "c"},
}};
static constexpr Option<std::string_view>
to_name(TestEnum te)
{
return to_second(test_epairs, te);
}
static constexpr Option<TestEnum>
to_type(std::string_view name)
{
return to_first(test_epairs, name);
}
static void
test_enum_pairs(void)
{
assert_equal(to_name(TestEnum::A).value(), "a");
g_assert_true(to_type("c").value() == TestEnum::C);
}
int
main(int argc, char* argv[])
@ -317,6 +344,7 @@ main(int argc, char* argv[])
g_test_add_func("/utils/to-from-lexnum", test_to_from_lexnum);
g_test_add_func("/utils/locale-workaround", test_locale_workaround);
g_test_add_func("/utils/error", test_error);
g_test_add_func("/utils/enum-pairs", test_enum_pairs);
return g_test_run();
}