t0001-init: split the existence test from the permission test

The test for correct permissions after init created a deep directory
must be guarded by POSIXPERM. But testing that the deep dirctory exists
is good even on platforms that do not provide the POSIXPERM prerequiste.

Signed-off-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t0001-init.sh

@@ -243,6 +243,12 @@ test_expect_success 'init recreates a new bare directory' '
 '
 
 test_expect_success 'init creates a new deep directory' '
+	rm -fr newdir &&
+	git init newdir/a/b/c &&
+	test -d newdir/a/b/c/.git/refs
+'
+
+test_expect_success POSIXPERM 'init creates a new deep directory (umask vs. shared)' '
 	rm -fr newdir &&
 	(
 		# Leading directories should honor umask while