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test-dir-iterator: do not assume errno values

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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>
This commit is contained in:
Junio C Hamano 2019-07-30 10:45:48 -07:00
parent c4d9c506f7
commit 9042140097
2 changed files with 12 additions and 3 deletions
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11
t/helper/test-dir-iterator.c
View file

@ -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);
}

4
t/t0066-dir-iterator.sh
View file

@ -55,13 +55,13 @@ test_expect_success 'dir-iterator should list files in the correct order' '
test_expect_success 'begin should fail upon inexistent paths' '
test_must_fail test-tool dir-iterator ./inexistent-path \
>actual-inexistent-path-output &&
echo "dir_iterator_begin failure: 2" >expected-inexistent-path-output &&
echo "dir_iterator_begin failure: ENOENT" >expected-inexistent-path-output &&
test_cmp expected-inexistent-path-output actual-inexistent-path-output
'
test_expect_success 'begin should fail upon non directory paths' '
test_must_fail test-tool dir-iterator ./dir/b >actual-non-dir-output &&
echo "dir_iterator_begin failure: 20" >expected-non-dir-output &&
echo "dir_iterator_begin failure: ENOTDIR" >expected-non-dir-output &&
test_cmp expected-non-dir-output actual-non-dir-output
'