t9117: test specifying full url to git svn init -T

According to the documentation, full URLs can be specified in the `-T`
argument to `git svn init`.  However, the canonicalization of such
arguments squashes together consecutive "/"s, which unsurprisingly
breaks http://, svn://, etc URLs.  Add a failing test case to provide
evidence of that.

On systems where Subversion provides svn_path_canonicalize but not
svn_dirent_canonicalize (Subversion 1.6 and earlier?), this test passes,
as svn_path_canonicalize doesn't mangle the consecutive "/"s.

[ew: fixed whitespace]

Signed-off-by: Adam Dinwoodie <adam@dinwoodie.org>
Signed-off-by: Eric Wong <normalperson@yhbt.net>

t/t9117-git-svn-init-clone.sh

@@ -119,4 +119,10 @@ test_expect_success 'clone with -s/-T/-b/-t and --prefix "" still works' '
 	rm -f warning
 	'
 
+test_expect_failure 'init with -T as a full url works' '
+	test ! -d project &&
+	git svn init -T "$svnrepo"/project/trunk project &&
+	rm -rf project
+	'
+
 test_done