[CI 01/17] tests: Make sure LANG is set properly for iso9660_test

[Glenn Washburn]

LANG must be set to something that supports international characters,
otherwise xorriso will refuse to include the file with name having
international characters, causing the test to fail. So if LANG is not set,
set it to en_US.UTF-8, a very common UTF-8 locale. And if it is set, but
does not look like a UTF-8 locale, print a warning so the user will have a
clue as to why the iso9660_test might be failing.

Signed-off-by: Glenn Washburn <development@efficientek.com>
---
 tests/iso9660_test.in | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tests/iso9660_test.in b/tests/iso9660_test.in
index 571b938d7..37b1d30af 100644
--- a/tests/iso9660_test.in
+++ b/tests/iso9660_test.in
@@ -7,6 +7,12 @@ if ! which xorriso >/dev/null 2>&1; then
    exit 77
 fi
 
+if [ -z "$LANG" ]; then
+   export LANG=en_US.UTF-8
+elif [ -n "${LANG##*UTF*}" ]; then
+   echo "WARNING: LANG=$LANG appears to not be unicode, international file 
test may fail."
+fi
+
 "@builddir@/grub-fs-tester" joliet
 "@builddir@/grub-fs-tester" rockridge
 "@builddir@/grub-fs-tester" rockridge_joliet
-- 
2.27.0