test to show current behavior is wrong at parsing an environment file
defining an undefined variable - it must not be defined!
NOTE: this test assume the $HOME variable is always set (see POSIX, this
normally is the case, e.g. the test suite remains stable).
Signed-off-by: Tom Klingenberg <tklingenberg@lastflood.net>
Upstream-commit: 1e89745704
Component: cli