Method wait

src/core/unit_tests.cpp:1937–1947

		}

		void wait(u32 ms)
		{
			WaitResult wr;
			wr.error = WaitResult::SUCCESS;

			m.lock();
			while (!done && wr.error != WaitResult::TIMEOUT)
				wr = cv.wait(m, ms);
			m.unlock();
			ENSURE(done);
		}

		static void callback(const char *begin, const char *end, void *user_data)
		{