1 files changed, 45 insertions, 0 deletions
diff --git a/xbmc/test/MtTestUtils.h b/xbmc/test/MtTestUtils.h
new file mode 100644
index 0000000..e41dd5e
--- /dev/null
+++ b/xbmc/test/MtTestUtils.h
@@ -0,0 +1,45 @@
+/*
+ *  Copyright (C) 2005-2019 Team Kodi
+ *  This file is part of Kodi - https://kodi.tv
+ *
+ *  SPDX-License-Identifier: GPL-2.0-or-later
+ *  See LICENSES/README.md for more information.
+ */
+
+#pragma once
+
+#include "threads/SystemClock.h"
+
+#include <chrono>
+#include <thread>
+
+namespace ConditionPoll
+{
+/**
+ * This is usually enough time for the condition to have occurred in a test.
+ */
+constexpr unsigned int defaultTimeout{20000};
+
+/**
+ * poll until the lambda returns true or the timeout occurs. If the timeout occurs then
+ * the function will return false. Otherwise it will return true.
+ */
+template<typename L> inline bool poll(unsigned int timeoutMillis, L lambda)
+{
+  XbmcThreads::EndTime<> endTime{std::chrono::milliseconds(timeoutMillis)};
+  bool lastValue = false;
+  while (!endTime.IsTimePast() && (lastValue = lambda()) == false)
+    std::this_thread::sleep_for(std::chrono::milliseconds(50));
+  return lastValue;
+}
+
+/**
+ * poll until the lambda returns true or the defaultTimeout occurs. If the timeout occurs then
+ * the function will return false. Otherwise it will return true.
+ */
+template<typename L> inline bool poll(L lambda)
+{
+  return poll(defaultTimeout, lambda);
+}
+
+}