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Tests: Update thread tests and make them pass

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The existing tests have only mildly changed, and there is another test
for joining dead non-detached threads.
This commit is contained in:
kleines Filmröllchen 2022-11-12 14:24:26 +01:00 committed by Andrew Kaster
parent 2fcb713037
commit 5b335e7fba
Notes: sideshowbarker 2024-07-17 07:48:42 +09:00 
Author: https://github.com/kleinesfilmroellchen
Commit: https://github.com/SerenityOS/serenity/commit/5b335e7fba
Pull-request: https://github.com/SerenityOS/serenity/pull/16011
Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 25 additions and 6 deletions
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31
Tests/LibThreading/TestThread.cpp
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@ -8,9 +8,6 @@
#include <LibThreading/Thread.h>
#include <unistd.h>
// FIXME: Enable these tests once they work reliably.
#if 0
TEST_CASE(threads_can_detach)
{
int should_be_42 = 0;
@ -29,10 +26,32 @@ TEST_CASE(threads_can_detach)
TEST_CASE(joining_detached_thread_errors)
{
auto thread = Threading::Thread::construct([]() { return 0; });
Atomic<bool> should_exit { false };
auto thread = Threading::Thread::construct([&]() {
while (!should_exit.load())
usleep(10 * 1000);
return 0;
});
thread->start();
thread->detach();
EXPECT(thread->join().is_error());
// Because of how the crash test forks and removes the thread, we can't use that to verify that join() crashes. Instead, we check the join crash condition ourselves.
EXPECT(!thread->needs_to_be_joined());
// FIXME: Dropping a running thread crashes because of the Function destructor. For now, force the detached thread to exit.
should_exit.store(true);
usleep(20 * 1000);
}
TEST_CASE(join_dead_thread)
{
auto thread = Threading::Thread::construct([&]() { return 0 /*nullptr*/; });
thread->start();
// The thread should have exited by then.
usleep(40 * 1000);
auto join_result = thread->join<int*>();
EXPECT(!join_result.is_error());
EXPECT_EQ(join_result.value(), static_cast<int*>(0));
}
#endif