53b98a8610
{fmt} v10.0.0 introduces formatter for `std::optional`, so there
is no need to test it. furthermore the behavior of this formatter
is different from our homebrew one. so let's skip this test if
{fmt} v10.0.0 or up is used.
Refs #18508
Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
Closes scylladb/scylladb#18509
59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
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/*
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* Copyright (C) 2023-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#define BOOST_TEST_MODULE string_format
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#include <boost/test/unit_test.hpp>
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#include <fmt/format.h>
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#include <fmt/ranges.h>
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#include <fmt/std.h>
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#include "utils/to_string.hh"
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// Test scylla's string formatters and printers defined in utils/to_string.hh
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void verify_parenthesis(std::string_view sv) {
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static std::unordered_map<char, char> paren_map = {{'{', '}'}, {'[', ']'}, {'(', ')'}, {'<', '>'}};
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BOOST_REQUIRE(!sv.empty());
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char open = sv.front();
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char close = sv.back();
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auto it = paren_map.find(open);
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if (it == paren_map.end()) {
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BOOST_FAIL(fmt::format("Unexpected delimiters: '{}' '{}'", open, close));
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}
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BOOST_REQUIRE_EQUAL(close, it->second);
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}
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boost::test_tools::assertion_result use_homebrew_formatter_for_optional(boost::unit_test::test_unit_id) {
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return FMT_VERSION < 100000;
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}
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// {fmt} >= 10.0.0 provides formatter for optional, and its
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// representation is different from our homebrew one:
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// {fmt} homebrew
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// nullopt none {}
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// "hello" hello hello
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//
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// so ignore this test for {fmt} >= 10.0.0
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BOOST_AUTO_TEST_CASE(test_optional_string_format,
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*boost::unit_test::precondition(use_homebrew_formatter_for_optional)) {
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std::optional<std::string> sopt;
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auto s = fmt::format("{}", sopt);
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BOOST_TEST_MESSAGE(fmt::format("Empty opt: {}", s));
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BOOST_REQUIRE_EQUAL(s.size(), 2);
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verify_parenthesis(s);
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sopt.emplace("foo");
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s = fmt::format("{}", sopt);
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BOOST_TEST_MESSAGE(fmt::format("Engaged opt: {}", s));
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}
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