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An Ingredients List for Testing - Part Seven (of Seven)
Friday, November 12, 2010
By James Whittaker
When to stop testing? It’s the age old testing question that many researchers have tried to quantify. In fact, the best answer requires no science whatsoever: never. Since testing is infinite, we can never really stop. A more practical answer also surfaces in the real world: when the software ships, you’re done. Of course this is only true for the duration of the ship party, after that testing continues on the next version.
At Google we are experimenting with test completeness measures that describe how well actual testing covers the
risk landscape
. In other words, we are measuring the extent to which our testing covers the things that require the most testing. Tests that cover the high risk areas well count for more than tests that cover lower risk features. Testing is, after all, a business of risk mitigation.
The set of tools necessary to accomplish this were described in my GTAC 2010 talk which should appear on YouTube soon and are collectively being called
Google Test Analytics
. More about these tools in future posts.
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An Ingredients List for Testing - Part Seven (of S...
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