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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock is about

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock is about

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock is about

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock is about

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Injecting Clock is about

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. Why do we care? •  You can write tests that do not depend on when they are run – Ward against Daylight Savings transition •  You can write tests for specific timing conditions – Test these “after NN hours” rules •  Offers another way of controlling timezone to be used by some code – More selective than default time zone

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. How does it work?

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. How does it work?

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. How does it work?

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. How does it work?

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© 2014 RichRelevance, Inc. All Rights Reserved. Confidential. How do I test? •  Inject a clock explicitly – Mocked – From a Clock factory