formats: packfile improving test coverage

1 files changed, 23 insertions, 0 deletions

diff --git a/formats/packfile/scanner_test.go b/formats/packfile/scanner_test.go
index d9fe13c..5f80da0 100644
--- a/formats/packfile/scanner_test.go
+++ b/formats/packfile/scanner_test.go
@@ -2,6 +2,7 @@ package packfile
 
 import (
 	"bytes"
+	"io"
 
 	. "gopkg.in/check.v1"
 	"gopkg.in/src-d/go-git.v4/core"
@@ -91,6 +92,28 @@ func (s *ScannerSuite) TestNextObjectHeaderWithOutReadObject(c *C) {
 	c.Assert(n, Equals, f.PackfileHash)
 }
 
+func (s *ScannerSuite) TestNextObjectHeaderWithOutReadObjectNonSeekable(c *C) {
+	f := fixtures.Basic().ByTag("ref-delta").One()
+	r := io.MultiReader(f.Packfile())
+	p := NewScanner(r)
+
+	_, objects, err := p.Header()
+	c.Assert(err, IsNil)
+
+	for i := 0; i < int(objects); i++ {
+		h, _ := p.NextObjectHeader()
+		c.Assert(err, IsNil)
+		c.Assert(*h, DeepEquals, expectedHeadersREF[i])
+	}
+
+	err = p.discardObjectIfNeeded()
+	c.Assert(err, IsNil)
+
+	n, err := p.Checksum()
+	c.Assert(err, IsNil)
+	c.Assert(n, Equals, f.PackfileHash)
+}
+
 var expectedHeadersOFS = []ObjectHeader{
 	{Type: core.CommitObject, Offset: 12, Length: 254},
 	{Type: core.OFSDeltaObject, Offset: 186, Length: 93, OffsetReference: 12},