[PATCH 1/3] Testing: XDG config files: Export a suitable `XDG_CONFIG_HOME' environment variable

The tests in:

  t/t1306-xdg-files.sh

were failing because the git commands were using the environment variable `XDG_CONFIG_HOME' as it was set for the user's usual environment, rather than as set for the testing environment.

This commit provides the quickest, simplest hack to make things work; because there is already the setting and exporting of the environment variable `HOME' in:

  t/test-lib.sh

this commit simply adds to that file the setting and exporting of the variable `XDG_CONFIG_HOME' (based on the variable `HOME' that is provided there).

However, the existing tests [sometimes] don't use these variables explicitly, so the whole structure of this testing rests on the hope that people maintain the conventions captured by the values of these variables; another commit should fix this instability by using these variables explicitly.

(Note: Double quotes are not needed around the value assigned to the variable, as word splitting is not performed).

Signed-off-by: Michael Witten <mfwitten@gmail.com>
---
 t/test-lib.sh | 3 +++
 1 file changed, 3 insertions(+)