tests: use basic format code "%Y" instead of "%s" for test portability On Windows, strftime() doesn't support format code "%s", and it causes "invalid format string" error. https://msdn.microsoft.com/en-us/library/fe06s4ak.aspx test-command-template.t examines not seconds value in UTC, but arithmetic calculation. Therefore, using format code "%Y" instead of "%s" should be reasonable. FYI: - Python standard library reference doesn't list "%s" up in format code list required for "C standard (1989 version)", even though it also mentions that additional format codes are required for "C standard (1999 version)" https://docs.python.org/2.7/library/datetime.html#strftime-and-strptime-behavior - The Open Group Base Specifications Issue 7 (IEEE Std 1003.1-2008, 2016 Edition) doesn't require strftime to support format code "%s" http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html - "man strftime" of (Open/Oracle) Solaris and Mac OS X (= UNIX certified OSs) describes about format code "%s"

--- a/tests/test-command-template.t	Sat Oct 29 03:08:08 2016 +0900
+++ b/tests/test-command-template.t	Sun Oct 30 06:15:07 2016 +0900
@@ -31,10 +31,10 @@
 
 Test arithmetic operators have the right precedence:
 
-  $ hg log -l 1 -T '{date(date, "%s") + 5 * 10} {date(date, "%s") - 2 * 3}\n'
-  1500051 1499995
-  $ hg log -l 1 -T '{date(date, "%s") * 5 + 10} {date(date, "%s") * 3 - 2}\n'
-  7500015 4500001
+  $ hg log -l 1 -T '{date(date, "%Y") + 5 * 10} {date(date, "%Y") - 2 * 3}\n'
+  2020 1964
+  $ hg log -l 1 -T '{date(date, "%Y") * 5 + 10} {date(date, "%Y") * 3 - 2}\n'
+  9860 5908
 
 Test division: