ui: fix ui.configdate for invalid dates

ui: fix ui.configdate for invalid dates

a7dce526c462 introduced util._parsedate with the aim to be used in
ui.configdate but ui.configdate was using util.parsedate instead. It have the
impact of raising an AbortError in case of an invalid date instead of a
ConfigError exception. Fix ui.configdate to use the right function and add a
test for invalid dates.

Thanks to Yuya for the catch!

--- a/mercurial/ui.py	Fri Apr 28 00:01:22 2017 +0900
+++ b/mercurial/ui.py	Tue May 23 15:44:50 2017 +0200
@@ -607,7 +607,7 @@
         (0, 0)
         """
         if self.config(section, name, default, untrusted):
-            return self.configwith(util.parsedate, section, name, default,
+            return self.configwith(util.rawparsedate, section, name, default,
                                    'date', untrusted)
         return default
 

--- a/tests/test-ui-config.py	Fri Apr 28 00:01:22 2017 +0900
+++ b/tests/test-ui-config.py	Tue May 23 15:44:50 2017 +0200
@@ -32,6 +32,9 @@
     'lists.list16="longer quotation" with "no ending quotation',
     'lists.list17=this is \\" "not a quotation mark"',
     'lists.list18=\n \n\nding\ndong',
+    'date.epoch=0 0',
+    'date.birth=2005-04-19T00:00:00',
+    'date.invalid=0'
     ])
 
 print(repr(testui.configitems('values')))
@@ -82,6 +85,9 @@
 print(repr(testui.configlist('lists', 'unknown', 'foo, bar')))
 print(repr(testui.configlist('lists', 'unknown', ['foo bar'])))
 print(repr(testui.configlist('lists', 'unknown', ['foo', 'bar'])))
+print("---")
+print(repr(testui.configdate('date', 'epoch')))
+print(repr(testui.configdate('date', 'birth')))
 
 print(repr(testui.config('values', 'String')))
 
@@ -101,3 +107,7 @@
     testui.configint('values', 'intinvalid')
 except error.ConfigError:
     print('intinvalid')
+try:
+    testui.configdate('date', 'invalid')
+except error.ConfigError:
+    print('dateinvalid')

--- a/tests/test-ui-config.py.out	Fri Apr 28 00:01:22 2017 +0900
+++ b/tests/test-ui-config.py.out	Tue May 23 15:44:50 2017 +0200
@@ -43,7 +43,11 @@
 ['foo', 'bar']
 ['foo bar']
 ['foo', 'bar']
+---
+(0, 0)
+(1113868800, 0)
 None
 True
 boolinvalid
 intinvalid
+dateinvalid