# \[GSoC\] \[PATCH v2 1/4\] t7400: test failure to add submodule in tracked path

- From: Atharva Raykar \<hidden\>
- Date: 2021-07-08 09:55:52 
- List: git
- Page: https://ratatoskr.run/git/2021/07/7894440
- Thread: https://ratatoskr.run/git/2021/07/7894268/t.md

```text
Add a test to ensure failure on adding a submodule to a directory with
tracked contents in the index.

As we are going to refactor and port to C some parts of `git submodule
add`, let's add a test to help ensure no regression is introduced.

Signed-off-by: Atharva Raykar <redacted>
Mentored-by: Christian Couder [ref]
Based-on-patch-by: Shourya Shukla [ref]
Mentored-by: Shourya Shukla [ref]
---
 t/t7400-submodule-basic.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index a924fdb7a6..7aa7fefdfa 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -196,6 +196,17 @@ test_expect_success 'submodule add to .gitignored path with --force' '
 	)
 '
 
+test_expect_success 'submodule add to path with tracked content fails' '
+	(
+		cd addtest &&
+		echo "'\''dir-tracked'\'' already exists in the index" >expect &&
+		mkdir dir-tracked &&
+		test_commit foo dir-tracked/bar &&
+		test_must_fail git submodule add "$submodurl" dir-tracked >actual 2>&1 &&
+		test_cmp expect actual
+	)
+'
+
 test_expect_success 'submodule add to reconfigure existing submodule with --force' '
 	(
 		cd addtest-ignore &&
-- 
2.32.0

```