[PATCH v4 1/2] submodule: document handling of relative superproject origin URLs

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These tests document how submodule sync and init handle various
kinds of relative super project origin URLs.  The submodule URL
path is ../subrepo.

6 cases are documented:
  foo
  foo/bar
  ./foo
  ./foo/bar
  ../foo
  ../foo/bar

Signed-off-by: Jon Seymour <jon.seymour@xxxxxxxxx>
---
 t/t7400-submodule-basic.sh | 62 +++++++++++++++++++++++++++++++++++++++++++++
 t/t7403-submodule-sync.sh  | 63 +++++++++++++++++++++++++++++++++++++++++++++-
 2 files changed, 124 insertions(+), 1 deletion(-)

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index 81827e6..97e7a73 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -507,6 +507,68 @@ test_expect_success 'relative path works with user@host:path' '
 	)
 '
 
+test_expect_success 'relative path works with foo' "
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url foo &&
+		echo \"cannot strip one component off url 'foo'\" >expect &&
+		test_must_fail git submodule init 2>actual &&
+		cat actual &&
+		test_cmp expect actual
+	)
+"
+
+test_expect_success 'relative path works with foo/bar' '
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url foo/bar &&
+		git submodule init &&
+		test "$(git config submodule.sub.url)" = foo/subrepo
+	)
+'
+
+test_expect_success 'relative path works with ./foo' '
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url ./foo &&
+		git submodule init &&
+		test "$(git config submodule.sub.url)" = ./subrepo
+	)
+'
+
+test_expect_success 'relative path works with ./foo/bar' '
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url ./foo/bar &&
+		git submodule init &&
+		test "$(git config submodule.sub.url)" = ./foo/subrepo
+	)
+'
+
+test_expect_success 'relative path works with ../foo' '
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url ../foo &&
+		git submodule init &&
+		test "$(git config submodule.sub.url)" = ../subrepo
+	)
+'
+
+test_expect_success 'relative path works with ../foo/bar' '
+	(
+		cd reltest &&
+		cp pristine-.git-config .git/config &&
+		git config remote.origin.url ../foo/bar &&
+		git submodule init &&
+		test "$(git config submodule.sub.url)" = ../foo/subrepo
+	)
+'
+
 test_expect_success 'moving the superproject does not break submodules' '
 	(
 		cd addtest &&
diff --git a/t/t7403-submodule-sync.sh b/t/t7403-submodule-sync.sh
index 3620215..3784c9b 100755
--- a/t/t7403-submodule-sync.sh
+++ b/t/t7403-submodule-sync.sh
@@ -26,7 +26,9 @@ test_expect_success setup '
 	(cd super-clone && git submodule update --init) &&
 	git clone super empty-clone &&
 	(cd empty-clone && git submodule init) &&
-	git clone super top-only-clone
+	git clone super top-only-clone &&
+	git clone super relative-clone &&
+	(cd relative-clone && git submodule update --init)
 '
 
 test_expect_success 'change submodule' '
@@ -86,4 +88,63 @@ test_expect_success '"git submodule sync" should not vivify uninteresting submod
 	)
 '
 
+test_expect_success '"git submodule sync" handles origin URL of the form foo' "
+	(cd relative-clone &&
+	 git remote set-url origin foo
+	 echo \"cannot strip one component off url 'foo'\" > expect &&
+	 test_must_fail git submodule sync 2> actual &&
+	 test_cmp expect actual
+	)
+"
+
+test_expect_success '"git submodule sync" handles origin URL of the form foo/bar' '
+	(cd relative-clone &&
+	 git remote set-url origin foo/bar
+	 git submodule sync &&
+	(cd submodule &&
+	 test "$(git config remote.origin.url)" == "foo/submodule"
+	)
+	)
+'
+
+test_expect_success '"git submodule sync" handles origin URL of the form ./foo' '
+	(cd relative-clone &&
+	 git remote set-url origin ./foo
+	 git submodule sync &&
+	(cd submodule &&
+	 test "$(git config remote.origin.url)" == "./submodule"
+	)
+	)
+'
+
+test_expect_success '"git submodule sync" handles origin URL of the form ./foo/bar' '
+	(cd relative-clone &&
+	 git remote set-url origin ./foo/bar
+	 git submodule sync &&
+	(cd submodule &&
+	 test "$(git config remote.origin.url)" == "./foo/submodule"
+	)
+	)
+'
+
+test_expect_success '"git submodule sync" handles origin URL of the form ../foo' '
+	(cd relative-clone &&
+	 git remote set-url origin ../foo
+	 git submodule sync &&
+	(cd submodule &&
+	 test "$(git config remote.origin.url)" == "../submodule"
+	)
+	)
+'
+
+test_expect_success '"git submodule sync" handles origin URL of the form ../foo/bar' '
+	(cd relative-clone &&
+	 git remote set-url origin ../foo/bar
+	 git submodule sync &&
+	(cd submodule &&
+	 test "$(git config remote.origin.url)" == "../foo/submodule"
+	)
+	)
+'
+
 test_done
-- 
1.7.10.2.594.g24e850d

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