bug#49463: [core-updates] libdatrie occasionally fails test

[Ludovic Courtès]

Ludovic Courtès <ludo@gnu.org> skribis:

> FAIL: test_serialization
> ========================
>
> => Preparing trie...
> => Saving trie to file...
> => Getting serialized trie size...
> serialized trie size 1376
> => Allocating...
> allocated 0x40ba70
> => Serializing...
> => Serialized...
> Failed to reopen trie file test.tri.
> FAIL test_serialization (exit status: 1)

This is a classical problem of having several tests fiddling with the
same file:

--8<---------------cut here---------------start------------->8---
$ grep --color -nH --null -e 'test\.tri' *.c
test_file.c32:#define TRIE_FILENAME "test.tri"
test_serialization.c34:#define TRIE_FILENAME "test.tri"
--8<---------------cut here---------------end--------------->8---

Fixed by running tests sequentially in commit
5f919605e94b12d7f56656a30f66f205c24cde98.

Ludo’.