test-dir-iterator: do not assume errno values
A few tests printed 'errno' as an integer and compared with
hardcoded integers; this is obviously not portable.
A two things to note are:
- the string obtained by strerror() is not portable, and cannot be
used for the purpose of these tests.
- there unfortunately isn't a portable way to map error numbers to
error names.
As we only care about a few selected errors, just map the error
number to the name before emitting for comparison.
Reported-by: Randall S. Becker <rsbecker@nexbridge.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/helper/test-dir-iterator.c b/t/helper/test-dir-iterator.c
index a5b96cb..c7c3066 100644
--- a/t/helper/test-dir-iterator.c
+++ b/t/helper/test-dir-iterator.c
@@ -4,6 +4,15 @@
#include "iterator.h"
#include "dir-iterator.h"
+static const char *error_name(int error_number)
+{
+ switch (error_number) {
+ case ENOENT: return "ENOENT";
+ case ENOTDIR: return "ENOTDIR";
+ default: return "ESOMETHINGELSE";
+ }
+}
+
/*
* usage:
* tool-test dir-iterator [--follow-symlinks] [--pedantic] directory_path
@@ -31,7 +40,7 @@ int cmd__dir_iterator(int argc, const char **argv)
diter = dir_iterator_begin(path.buf, flags);
if (!diter) {
- printf("dir_iterator_begin failure: %d\n", errno);
+ printf("dir_iterator_begin failure: %s\n", error_name(errno));
exit(EXIT_FAILURE);
}
