From: Stephen Colebourne <scolebourne@joda.org> Date: Thu, 25 Jan 2018 16:11:41 +0000 Subject: Re: [tz] Adding a "test" region? | As I have outlined in the other thread, just because a parser can | parse the TZDB source file, does not mean that there is no problem. This is absolutely correct. | The problems occur in the interactions between the many and various | systems in the time stack. A test file plays a relatively small role | in testing the stack. Of course. But the expectation is that you'd also run all of the other tests for all of the other interfaces that you have (I am sure your team of paid professionals has created such tests) with the test time zone. That way you get to discover whether any of your interfaces have problems, before things are being deployed in real timezones, and have time to make corrections. kre