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From Erick Erickson <>
Subject Re: testing with system properties
Date Fri, 10 Aug 2018 00:12:50 GMT
See for an example of:

public TestRule solrTestRules = RuleChain.outerRule(new


On Thu, Aug 9, 2018 at 2:33 PM, Michael Sokolov <> wrote:
> I ran into a need to test some functionality that relies on system
> properties. Writing the test was error-prone because the properties persist
> across the jvm so if you set them in a test they leak across to other tests
> unless you are careful about @After methods. It occurred to me it would be
> nice if LuceneTestCase would detect this and yell. It could save all the
> system properties before each test (or at least each test class) and see if
> they are restored at the end.  I don't know if this arises much in Lucene,
> but maybe in Solr?
> -Mike

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