)
'
+test_expect_success 'unsetting submodules config from the working tree with "submodule--helper config --unset"' '
+ (cd super &&
+ git submodule--helper config --unset submodule.submodule.url &&
+ git submodule--helper config submodule.submodule.url >actual &&
+ test_must_be_empty actual
+ )
+'
+
+
test_expect_success 'writing submodules config with "submodule--helper config"' '
(cd super &&
echo "new_url" >expect &&