storage: transactional, new storage with transactional capabilities

Signed-off-by: Máximo Cuadros <mcuadros@gmail.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/storage/transactional/index_test.go b/storage/transactional/index_test.go
new file mode 100644
index 0000000..e1c571a
--- /dev/null
+++ b/storage/transactional/index_test.go
@@ -0,0 +1,52 @@
+package transactional
+
+import (
+	. "gopkg.in/check.v1"
+	"gopkg.in/src-d/go-git.v4/plumbing/format/index"
+	"gopkg.in/src-d/go-git.v4/storage/memory"
+)
+
+var _ = Suite(&IndexSuite{})
+
+type IndexSuite struct{}
+
+func (s *IndexSuite) TestSetIndexBase(c *C) {
+	idx := &index.Index{}
+	idx.Version = 2
+
+	base := memory.NewStorage()
+	err := base.SetIndex(idx)
+	c.Assert(err, IsNil)
+
+	temporal := memory.NewStorage()
+	cs := NewIndexStorage(base, temporal)
+
+	idx, err = cs.Index()
+	c.Assert(err, IsNil)
+	c.Assert(idx.Version, Equals, uint32(2))
+}
+
+func (s *IndexSuite) TestCommit(c *C) {
+	idx := &index.Index{}
+	idx.Version = 2
+
+	base := memory.NewStorage()
+	err := base.SetIndex(idx)
+	c.Assert(err, IsNil)
+
+	temporal := memory.NewStorage()
+
+	idx = &index.Index{}
+	idx.Version = 3
+
+	is := NewIndexStorage(base, temporal)
+	err = is.SetIndex(idx)
+	c.Assert(err, IsNil)
+
+	err = is.Commit()
+	c.Assert(err, IsNil)
+
+	baseIndex, err := base.Index()
+	c.Assert(err, IsNil)
+	c.Assert(baseIndex.Version, Equals, uint32(3))
+}