[RFC PATCH v2 08/12] t7506: cleanup .gitmodules properly before setting up new scenario

[Antonio Ospite <ao2@ao2.it>]

In t/t7506-status-submodule.sh at some point a new scenario is set up to
test different things, in particular new submodules are added which are
meant to completely replace the previous ones.

However before calling the "git submodule add" commands for the new
layout, the .gitmodules file is removed only from the working tree still
leaving the previous content in current branch.

This can break if, in the future, "git submodule add" starts
differentiating between the following two cases:

  - .gitmodules is not in the working tree but it is in the current
    branch (it may not be safe to add new submodules in this case);

  - .gitmodules is neither in the working tree nor anywhere in the
    current branch (it is safe to add new submodules).

Since the test means to get rid of .gitmodules anyways, let's completely
remove it from the current branch, to actually start afresh in the new
scenario.

This is more future-proof and does not break current tests.

Signed-off-by: Antonio Ospite <ao2@ao2.it>
---
 t/t7506-status-submodule.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/t/t7506-status-submodule.sh b/t/t7506-status-submodule.sh
index b4b74dbe29..af91ba92ff 100755
--- a/t/t7506-status-submodule.sh
+++ b/t/t7506-status-submodule.sh
@@ -325,7 +325,8 @@ test_expect_success 'setup superproject with untracked file in nested submodule'
 	(
 		cd super &&
 		git clean -dfx &&
-		rm .gitmodules &&
+		git rm .gitmodules &&
+		git commit -m "remove .gitmodules" &&
 		git submodule add -f ./sub1 &&
 		git submodule add -f ./sub2 &&
 		git submodule add -f ./sub1 sub3 &&
-- 
2.18.0