1 files changed, 47 insertions, 0 deletions
diff --git a/formats/idxfile/encoder_test.go b/formats/idxfile/encoder_test.go
new file mode 100644
index 0000000..bfb9f91
--- /dev/null
+++ b/formats/idxfile/encoder_test.go
@@ -0,0 +1,47 @@
+package idxfile
+
+import (
+	"bytes"
+	"io"
+	"os"
+
+	. "gopkg.in/check.v1"
+)
+
+func (s *IdxfileSuite) TestEncode(c *C) {
+	for i, path := range [...]string{
+		"fixtures/git-fixture.idx",
+		"../packfile/fixtures/spinnaker-spinnaker.idx",
+	} {
+		com := Commentf("subtest %d: path = %s", i, path)
+
+		exp, idx, err := decode(path)
+		c.Assert(err, IsNil, com)
+
+		obt := new(bytes.Buffer)
+		e := NewEncoder(obt)
+		size, err := e.Encode(idx)
+		c.Assert(err, IsNil, com)
+
+		c.Assert(size, Equals, exp.Len(), com)
+		c.Assert(obt, DeepEquals, exp, com)
+	}
+}
+
+func decode(path string) (*bytes.Buffer, *Idxfile, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	cont := new(bytes.Buffer)
+	tee := io.TeeReader(f, cont)
+
+	d := NewDecoder(tee)
+	idx := &Idxfile{}
+	if err = d.Decode(idx); err != nil {
+		return nil, nil, err
+	}
+
+	return cont, idx, f.Close()
+}