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// Copyright (c) 2026 Progmasoft.
// SPDX-License-Identifier: MPL-2.0 WITH AdditionRef-Progmasoft-Exception-1.1
// A test binary whose tests misbehave on purpose. The runner's integration
// tests start it and check what the runner made of each misbehaviour.
#include <Progmasoft/Catch3/Runner.hpp>
#include <Progmasoft/Catch3/TestMacros.hpp>
#include <chrono>
#include <cstdlib>
#include <filesystem>
#include <fstream>
#include <iostream>
#include <optional>
#include <string>
#include <thread>
namespace
{
/// The value of the environment variable `name`, if it is set.
std::optional<std::string>
Environment(const char *name)
{
#if defined(_WIN32)
char *value = nullptr;
std::size_t length = 0;
if (_dupenv_s(&value, &length, name) != 0 || value == nullptr)
{
return std::nullopt;
}
std::string result{ value };
std::free(value);
return result;
#else
const char *value = std::getenv(name);
return value == nullptr ? std::nullopt
: std::optional<std::string>{ value };
#endif
}
/// A directory the integration test gives every run of the fixture, to
/// count attempts across worker processes.
std::filesystem::path
StateDirectory()
{
const auto directory = Environment("CATCH3_FIXTURE_STATE");
return directory ? std::filesystem::path{ *directory }
: std::filesystem::path{};
}
/// How often `name` ran before, counted in a file; increments it.
int
CountRun(const std::string &name)
{
const auto file = StateDirectory() / (name + ".count");
int count = 0;
{
std::ifstream input(file);
input >> count;
}
std::ofstream output(file, std::ios::trunc);
output << count + 1;
return count;
}
bool polluted = false;
} // namespace
TEST_CASE("fixture passes", "[fixture][pass]")
{
REQUIRE(1 + 1 == 2);
}
TEST_CASE("fixture prints", "[fixture][pass]")
{
std::cout << "said through std::cout\n";
std::cerr << "said through std::cerr\n";
CHECK(true);
}
TEST_CASE("fixture fails", "[fixture][fail]")
{
const int expected = 3;
SECTION("in a section")
{
CHECK(1 + 1 == expected);
}
}
TEST_CASE("fixture throws", "[fixture][fail]")
{
throw std::runtime_error("broken on purpose");
}
TEST_CASE("fixture crashes", "[fixture][crash]")
{
SECTION("deep down")
{
CHECK(true);
std::abort();
}
}
TEST_CASE("fixture hangs", "[fixture][hang][!timeout:1]")
{
CHECK(true);
std::this_thread::sleep_for(std::chrono::seconds(60));
}
TEST_CASE("fixture is flaky", "[fixture][flaky]")
{
// Fails the first time it runs, passes afterwards.
REQUIRE(CountRun("flaky") > 0);
}
TEST_CASE("fixture alternates", "[fixture][alternate]")
{
// Fails on every even run: flaky on every run of the runner.
REQUIRE(CountRun("alternates") % 2 == 1);
}
TEST_CASE("fixture innocent one", "[fixture][order]")
{
CHECK(true);
}
TEST_CASE("fixture polluter", "[fixture][order]")
{
polluted = true;
CHECK(true);
}
TEST_CASE("fixture innocent two", "[fixture][order]")
{
CHECK(true);
}
TEST_CASE("fixture victim", "[fixture][order]")
{
REQUIRE_FALSE(polluted);
}
TEST_CASE("fixture base", "[fixture][deps]")
{
FAIL("the base is broken");
}
TEST_CASE("fixture dependent", "[fixture][deps][!depends:fixture base]")
{
CHECK(true);
}
TEST_CASE("fixture temporary directory", "[fixture][temp]")
{
const auto directory = Progmasoft::Catch3::TestTemporaryDirectory();
REQUIRE(std::filesystem::exists(directory));
REQUIRE(std::filesystem::equivalent(std::filesystem::temp_directory_path(),
directory));
std::ofstream(directory / "scratch.txt") << "kept only on failure";
CHECK_FALSE(Environment("CATCH3_FIXTURE_FAIL_TEMP").has_value());
}
TEST_CASE("fixture slow one", "[fixture][slow]")
{
std::this_thread::sleep_for(std::chrono::milliseconds(300));
CHECK(true);
}
TEST_CASE("fixture slow two", "[fixture][slow]")
{
std::this_thread::sleep_for(std::chrono::milliseconds(300));
CHECK(true);
}
TEST_CASE("fixture slow three", "[fixture][slow]")
{
std::this_thread::sleep_for(std::chrono::milliseconds(300));
CHECK(true);
}
TEST_CASE("fixture slow four", "[fixture][slow]")
{
std::this_thread::sleep_for(std::chrono::milliseconds(300));
CHECK(true);
}
TEST_CASE("fixture skips", "[fixture][skip]")
{
SKIP("not on this machine");
}
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