// Copyright 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef MOJO_CORE_TEST_UTILS_H_
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#define MOJO_CORE_TEST_UTILS_H_
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#include "base/macros.h"
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#include "base/time/time.h"
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#include "mojo/public/c/system/types.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace mojo {
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namespace core {
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namespace test {
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MojoDeadline DeadlineFromMilliseconds(unsigned milliseconds);
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// A timeout smaller than |TestTimeouts::tiny_timeout()|, as a |MojoDeadline|.
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// Warning: This may lead to flakiness, but this is unavoidable if, e.g., you're
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// trying to ensure that functions with timeouts are reasonably accurate. We
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// want this to be as small as possible without causing too much flakiness.
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MojoDeadline EpsilonDeadline();
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// |TestTimeouts::tiny_timeout()|, as a |MojoDeadline|. (Expect this to be on
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// the order of 100 ms.)
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MojoDeadline TinyDeadline();
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// |TestTimeouts::action_timeout()|, as a |MojoDeadline|. (Expect this to be on
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// the order of 10 s.)
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MojoDeadline ActionDeadline();
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// Sleeps for at least the specified duration.
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void Sleep(MojoDeadline deadline);
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// Stopwatch -------------------------------------------------------------------
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// A simple "stopwatch" for measuring time elapsed from a given starting point.
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class Stopwatch {
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public:
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Stopwatch();
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~Stopwatch();
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void Start();
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// Returns the amount of time elapsed since the last call to |Start()| (in
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// microseconds).
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MojoDeadline Elapsed();
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private:
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base::TimeTicks start_time_;
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DISALLOW_COPY_AND_ASSIGN(Stopwatch);
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};
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} // namespace test
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} // namespace core
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} // namespace mojo
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#endif // MOJO_CORE_TEST_UTILS_H_
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