test_i18ngrep "error in tree .*contains duplicate file entries" out
'
+test_expect_success 'tree object with dublicate names' '
+ test_when_finished "remove_object \$blob" &&
+ test_when_finished "remove_object \$tree" &&
+ test_when_finished "remove_object \$badtree" &&
+ blob=$(echo blob | git hash-object -w --stdin) &&
+ printf "100644 blob %s\t%s\n" $blob x.2 >tree &&
+ tree=$(git mktree <tree) &&
+ printf "100644 blob %s\t%s\n" $blob x.1 >badtree &&
+ printf "100644 blob %s\t%s\n" $blob x >>badtree &&
+ printf "040000 tree %s\t%s\n" $tree x >>badtree &&
+ badtree=$(git mktree <badtree) &&
+ test_must_fail git fsck 2>out &&
+ test_i18ngrep "$badtree" out &&
+ test_i18ngrep "error in tree .*contains duplicate file entries" out
+'
+
test_expect_success 'unparseable tree object' '
test_oid_cache <<-\EOF &&
junk sha1:twenty-bytes-of-junk