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5b335e7fba
The existing tests have only mildly changed, and there is another test for joining dead non-detached threads.
58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Spencer Dixon <spencercdixon@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibTest/TestCase.h>
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#include <LibThreading/Thread.h>
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#include <unistd.h>
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TEST_CASE(threads_can_detach)
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{
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int should_be_42 = 0;
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auto thread = Threading::Thread::construct([&should_be_42]() {
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usleep(10 * 1000);
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should_be_42 = 42;
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return 0;
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});
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thread->start();
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thread->detach();
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usleep(20 * 1000);
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EXPECT(should_be_42 == 42);
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}
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TEST_CASE(joining_detached_thread_errors)
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{
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Atomic<bool> should_exit { false };
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auto thread = Threading::Thread::construct([&]() {
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while (!should_exit.load())
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usleep(10 * 1000);
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return 0;
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});
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thread->start();
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thread->detach();
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// 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.
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EXPECT(!thread->needs_to_be_joined());
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// FIXME: Dropping a running thread crashes because of the Function destructor. For now, force the detached thread to exit.
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should_exit.store(true);
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usleep(20 * 1000);
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}
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TEST_CASE(join_dead_thread)
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{
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auto thread = Threading::Thread::construct([&]() { return 0 /*nullptr*/; });
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thread->start();
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// The thread should have exited by then.
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usleep(40 * 1000);
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auto join_result = thread->join<int*>();
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EXPECT(!join_result.is_error());
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EXPECT_EQ(join_result.value(), static_cast<int*>(0));
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}
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