1 files changed, 114 insertions, 0 deletions
diff --git a/submodule_test.go b/submodule_test.go
new file mode 100644
index 0000000..ed49927
--- /dev/null
+++ b/submodule_test.go
@@ -0,0 +1,114 @@
+package git
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+
+	"github.com/src-d/go-git-fixtures"
+
+	. "gopkg.in/check.v1"
+	"srcd.works/go-git.v4/plumbing"
+)
+
+type SubmoduleSuite struct {
+	BaseSuite
+	Worktree *Worktree
+	path     string
+}
+
+var _ = Suite(&SubmoduleSuite{})
+
+func (s *SubmoduleSuite) SetUpTest(c *C) {
+	path := fixtures.ByTag("submodule").One().Worktree().Base()
+
+	dir, err := ioutil.TempDir("", "submodule")
+	c.Assert(err, IsNil)
+
+	r, err := PlainClone(dir, false, &CloneOptions{
+		URL: fmt.Sprintf("file://%s", filepath.Join(path)),
+	})
+
+	c.Assert(err, IsNil)
+
+	s.Repository = r
+	s.Worktree, err = r.Worktree()
+	c.Assert(err, IsNil)
+
+	s.path = path
+}
+
+func (s *SubmoduleSuite) TearDownTest(c *C) {
+	err := os.RemoveAll(s.path)
+	c.Assert(err, IsNil)
+}
+
+func (s *SubmoduleSuite) TestInit(c *C) {
+	sm, err := s.Worktree.Submodule("basic")
+	c.Assert(err, IsNil)
+
+	_, err = sm.r.Reference(plumbing.HEAD, true)
+	c.Assert(err, Equals, plumbing.ErrReferenceNotFound)
+
+	err = sm.Init()
+	c.Assert(err, IsNil)
+
+	ref, err := sm.r.Reference(plumbing.HEAD, true)
+	c.Assert(err, IsNil)
+	c.Assert(ref.Hash().String(), Equals, "6ecf0ef2c2dffb796033e5a02219af86ec6584e5")
+
+	w, err := sm.r.Worktree()
+	c.Assert(err, IsNil)
+
+	status, err := w.Status()
+	c.Assert(err, IsNil)
+	c.Assert(status.IsClean(), Equals, true)
+}
+
+func (s *SubmoduleSuite) TestUpdate(c *C) {
+	sm, err := s.Worktree.Submodule("basic")
+	c.Assert(err, IsNil)
+
+	_, err = sm.r.Reference(plumbing.HEAD, true)
+	c.Assert(err, Equals, plumbing.ErrReferenceNotFound)
+
+	err = sm.Init()
+	c.Assert(err, IsNil)
+
+	idx, err := s.Repository.Storer.Index()
+	c.Assert(err, IsNil)
+
+	for i, e := range idx.Entries {
+		if e.Name == "basic" {
+			e.Hash = plumbing.NewHash("b029517f6300c2da0f4b651b8642506cd6aaf45d")
+		}
+
+		idx.Entries[i] = e
+	}
+
+	err = s.Repository.Storer.SetIndex(idx)
+	c.Assert(err, IsNil)
+
+	err = sm.Update()
+	c.Assert(err, IsNil)
+
+	ref, err := sm.r.Reference(plumbing.HEAD, true)
+	c.Assert(err, IsNil)
+	c.Assert(ref.Hash().String(), Equals, "b029517f6300c2da0f4b651b8642506cd6aaf45d")
+
+}
+
+func (s *SubmoduleSuite) TestSubmodulesInit(c *C) {
+	sm, err := s.Worktree.Submodules()
+	c.Assert(err, IsNil)
+
+	err = sm.Init()
+	c.Assert(err, IsNil)
+
+	for _, m := range sm {
+		ref, err := m.r.Reference(plumbing.HEAD, true)
+		c.Assert(err, IsNil)
+		c.Assert(ref.Hash(), Not(Equals), plumbing.ZeroHash)
+	}
+}