check-commit: add a test for the patch checking script in contrib

check-commit: add a test for the patch checking script in contrib

This introduces a test for the change introduced in 8f5735b4aca5.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-contrib-check-commit.t	Fri Dec 11 12:21:26 2015 +0000
@@ -0,0 +1,28 @@
+Test the 'check-commit' script
+==============================
+
+Test long lines in header (should not be reported as too long description)
+
+  $ cat > patch-with-long-header.diff << EOF
+  > # HG changeset patch
+  > # User timeless <[e-mail]>
+  > # Date 1448911706 0
+  > #      Mon Nov 30 19:28:26 2015 +0000
+  > # Node ID c41cb6d2b7dbd62b1033727f8606b8c09fc4aa88
+  > # Parent  42aa0e570eaa364a622bc4443b0bcb79b1100a58
+  > # ClownJoke This is a veryly long header that should not be warned about because its not the description
+  > transplant: use Oxford comma
+  > 
+  > diff --git a/hgext/transplant.py b/hgext/transplant.py
+  > --- a/hgext/transplant.py
+  > +++ b/hgext/transplant.py
+  > @@ -599,7 +599,7 @@
+  >              return
+  >          if not (opts.get('source') or revs or
+  >                  opts.get('merge') or opts.get('branch')):
+  > -            raise error.Abort(_('no source URL, branch revision or revision '
+  > +            raise error.Abort(_('no source URL, branch revision, or revision '
+  >                                 'list provided'))
+  >          if opts.get('all'):
+  > EOF
+  $ cat patch-with-long-header.diff | $TESTDIR/../contrib/check-commit