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futures.cpp
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29 
30 #include "futures.h"
31 #include <thread>
32 #include <chrono>
33 #include <QEventLoop>
34 #include <QtTest>
35 #include <futures.h>
36 
38 
39 namespace LeechCraft
40 {
41 namespace Util
42 {
43  namespace
44  {
45  auto MkWaiter ()
46  {
47  return [] (int msecs)
48  {
49  return QtConcurrent::run ([msecs]
50  {
51  std::this_thread::sleep_for (std::chrono::milliseconds (msecs));
52  return msecs * 2;
53  });
54  };
55  }
56  }
57 
58  void FuturesTest::testSequencer ()
59  {
60  QEventLoop loop;
61  int res = 0;
62  Sequence (nullptr, MkWaiter (), 50)
63  .Then (MkWaiter ())
64  .Then (MkWaiter ())
65  .Then (MkWaiter ())
66  .Then ([&loop, &res] (int cnt)
67  {
68  res = cnt;
69  loop.quit ();
70  });
71 
72  loop.exec ();
73 
74  QCOMPARE (res, 800);
75  }
76 }
77 }
detail::SequenceProxy< typename detail::Sequencer< Executor, Args...>::RetType_t, Executor, Args...> Sequence(QObject *parent, Executor f, Args...args)
Creates a sequencer that allows chaining multiple futures.
Definition: futures.h:442