[RFC PATCH v3 2/2] t7406: add test for non-default branch in submodule

["Eddy Petrișor" <eddy.petrisor@codeaurora.org>]

From: Eddy Petrișor <eddy.petrisor@gmail.com>

If a submodule uses a non-default branch and the branch info is versioned, on
submodule update --recursive --init the correct branch should be checked out.

Signed-off-by: Eddy Petrișor <eddy.petrisor@gmail.com>
---
 t/t7406-submodule-update.sh | 54 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index 6f083c4d6..7b65f1dd1 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -259,6 +259,60 @@ test_expect_success 'submodule update --remote should fetch upstream changes wit
 	)
 '
 
+test_expect_success 'submodule update --remote --recursive --init should fetch module branch from .gitmodules' '
+	git clone . super5 &&
+	git clone super5 submodl2b2 &&
+	git clone super5 submodl1b1 &&
+	cd submodl2b2 &&
+	echo linel2b2 > l2b2 &&
+	git checkout -b b2 &&
+	git add l2b2 &&
+	test_tick &&
+	git commit -m "commit on b2 branch in l2" &&
+	git rev-parse --verify HEAD >../expectl2 &&
+	git checkout master &&
+	cd ../submodl1b1 &&
+	git checkout -b b1 &&
+	echo linel1b1 > l1b1 &&
+	git add l1b1 &&
+	test_tick &&
+	git commit -m "commit on b1 branch in l1" &&
+	git submodule add ../submodl2b2 submodl2b2 &&
+	git config -f .gitmodules submodule."submodl2b2".branch b2 &&
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "add l2 module with branch b2 in l1 module in branch b1" &&
+	git submodule init submodl2b2 &&
+	git rev-parse --verify HEAD >../expectl1 &&
+	git checkout master &&
+	cd ../super5 &&
+	echo super_with_2_chained_modules > super5 &&
+	git add super5 &&
+	test_tick &&
+	git commit -m "commit on default branch in super5" &&
+	git submodule add ../submodl1b1 submodl1b1 &&
+	git config -f .gitmodules submodule."submodl1b1".branch b1 &&
+	git add .gitmodules &&
+	test_tick &&
+	git commit -m "add l1 module with branch b1 in super5" &&
+	git submodule init submodl1b1 &&
+	git clone super5 super &&
+	(
+		cd super &&
+		git submodule update --recursive --init
+	) &&
+	(
+		cd submodl1b1 &&
+		git rev-parse --verify HEAD >../../actuall1 &&
+		test_cmp ../../expectl1 ../../actuall1
+	) &&
+	(
+		cd submodl2b2 &&
+		git rev-parse --verify HEAD >../../../actuall2 &&
+		test_cmp ../../../expectl2 ../../../actuall2
+	)
+'
+
 test_expect_success 'local config should override .gitmodules branch' '
 	(cd submodule &&
 	 git checkout test-branch &&
-- 
2.16.2