[PATCH] test-lib.sh: unset XDG_CACHE_HOME

[Genki Sky]

git respects XDG_CACHE_HOME for the credential cache. So, we should
unset XDG_CACHE_HOME for the test environment, lest a user's custom one
cause failure in the test.

For example, t/t0301-credential-cache.sh expects a default directory
to be used if it hasn't explicitly set XDG_CACHE_HOME.

Signed-off-by: Genki Sky <s...@genki.is>
---

Notes:

  This is the XDG_CACHE_HOME version of 5adf84ebb ("test-lib.sh: unset
  XDG_CONFIG_HOME", 2012-07-24).

 t/test-lib.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 9af19055b..001ef6b64 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -116,6 +116,7 @@ unset VISUAL EMAIL LANGUAGE COLUMNS $("$PERL_PATH" -e '
        my @vars = grep(/^GIT_/ && !/^GIT_($ok)/o, @env);
        print join("\n", @vars);
 ')
+unset XDG_CACHE_HOME
 unset XDG_CONFIG_HOME
 unset GITPERLLIB
 GIT_AUTHOR_EMAIL=aut...@example.com
--
2.16.1.195.g373da842b