t7300-clean: require POSIXPERM for chmod 0 test

A test case introduced by 91479b9c (t7300: add tests to document
behavior of clean and nested git) uses 'chmod 0' to verify that a
subdirectory that has an unreadable .git file is not removed. This can
work only when the system pays attention to the permissions set with
'chmod'. Therefore, set the POSIXPERM prerequisite on the test case.

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

diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh
index 32e96da7e37e5087a2dedba392cfa304a04beb4f..27557d64f35bf7d53d52ee7583258daa24ef68b7 100755 (executable)
--- a/t/t7300-clean.sh
+++ b/t/t7300-clean.sh
@@ -499,7 +499,7 @@ test_expect_success 'should not clean submodules' '
        test_path_is_missing to_clean
 '
 
-test_expect_success 'should avoid cleaning possible submodules' '
+test_expect_success POSIXPERM 'should avoid cleaning possible submodules' '
        rm -fr to_clean possible_sub1 &&
        mkdir to_clean possible_sub1 &&
        test_when_finished "rm -rf possible_sub*" &&