[PATCH 3/3] Add t/t7401 - test submodule interaction with remotes machinery

[Mark Levedahl <mlevedahl@gmail.com>]

This adds a sequence of tests to assure that the following two sequences
work:

	git clone -o frotz <someurl> foo
	cd foo
	git submodule init
	git submodule update

This should result in the top-level project and subproject having "frotz"
as the only defined remote, and should succeed with the
branch.<name>.remote mechanism supplying frotz as the remote.

Then, in the same working directory
	git remote add fork <some url>
	git fetch fork
	git checkout --track -b fork fork/<somebranch>
	git submodule init
	git submodule update

will retrive new submodules from remote "fork", and define fork in the
existing modules.

Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
---
 t/t7401-submodule-remote.sh |  118 +++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 118 insertions(+), 0 deletions(-)
 create mode 100755 t/t7401-submodule-remote.sh

diff --git a/t/t7401-submodule-remote.sh b/t/t7401-submodule-remote.sh
new file mode 100755
index 0000000..e5bef27
--- /dev/null
+++ b/t/t7401-submodule-remote.sh
@@ -0,0 +1,118 @@
+#!/bin/sh
+
+test_description='Porcelain support for submodules with multiple remotes
+
+This test verifies operation of submodules using multiple remotes and
+differing remote per top-level branch.  This includes ability to follow
+the top-level remote.<branch>, and to propagate definition of new remotes
+down to submodules as needed.'
+
+. ./test-lib.sh
+
+# the standard tests all work with one repo, but we need several..
+rm -rf .git
+
+test_expect_success 'Prepare master repository with 1 submodule' '
+	(
+	mkdir master &&
+	cd master &&
+	git init &&
+	echo "on master" > master.txt &&
+	git add master.txt &&
+	git commit -m "Add master.txt" &&
+	mkdir submod1 &&
+	cd submod1 &&
+	git init &&
+	echo "submod1" > submod1.txt &&
+	git add submod1.txt &&
+	git commit -m "Added submod1.txt" &&
+	cd .. &&
+	git submodule add ./submod1 submod1 &&
+	git commit -m "Added submodule submod1"
+	)
+'
+
+test_expect_success 'Clone master as fork' '
+	(
+	git clone master fork &&
+	cd fork &&
+	test "$(git remote)" = "origin" &&
+	git submodule init &&
+	git submodule update &&
+	test -e submod1/.git
+	)
+'
+
+test_expect_success 'Add second submodule in fork' '
+	(
+	cd fork &&
+	mkdir submod2 &&
+	cd submod2 &&
+	git init &&
+	echo "submod2" > submod2.txt &&
+	git add submod2.txt &&
+	git commit -m "Added submod2.txt" &&
+	cd .. &&
+	git submodule add ./submod2 submod2 &&
+	git commit -m "Added submodule submod2 on fork"
+	)
+'
+
+test_expect_success 'Clone master using frotz instead of origin' '
+	(
+	git clone -o frotz master worker &&
+	cd worker &&
+	test "$(git remote)" = "frotz"
+	)
+'
+
+test_expect_success 'Get submodules using frotz instead of origin' '
+	(
+	cd worker &&
+	git submodule init &&
+	git submodule update &&
+	test -e submod1/.git &&
+	cd submod1 &&
+	test "$(git remote)" = "frotz"
+	)
+'
+
+test_expect_success 'submodule update fails on detached head' '
+	(
+	cd worker &&
+	git checkout $(git rev-parse HEAD) &&
+	! git submodule update
+	)
+'
+
+test_expect_success 'submodule update -r remote succeeds on detached head' '
+	(
+	cd worker &&
+	git checkout $(git rev-parse HEAD) &&
+	git submodule update -r frotz
+	)
+'
+
+test_expect_success 'Update using fork to get additional submodule' '
+	(
+	cd worker &&
+	git remote add fork $(pwd)/../fork &&
+	git fetch fork &&
+	git checkout --track -b fork_master fork/master &&
+	git submodule init &&
+	git submodule update &&
+	test -e submod2/.git &&
+	cd submod2 &&
+	test "$(git remote)" = "fork" &&
+	cd ../submod1 &&
+	remotes1=$(git remote) &&
+	case $remotes1 in
+		fork*frotz|frotz*fork)
+			true ;;
+		*)
+			false ;;
+	esac
+	)
+'
+
+test_done
-- 
1.5.4.47.gcca7b3