move plumbing from top level package to plumbing (#183)

* plumbing: rename Object -> EncodedObject.

* plumbing/storer: rename ObjectStorer -> EncodedObjectStorer.

* move difftree to plumbing/difftree.

* move diff -> utils/diff

* make Object/Tag/Blob/Tree/Commit/File depend on storer.

* Object and its implementations now depend only on
  storer.EncodedObjectStorer, not git.Repository.
* Tests are decoupled accordingly.

* move Object/Commit/File/Tag/Tree to plumbing/object.

* move Object/Commit/File/Tag/Tree to plumbing/object.
* move checkClose to utils/ioutil.

* move RevListObjects to plumbing/revlist.Objects.

* move DiffTree to plumbing/difftree package.

* rename files with plural nouns to singular

* plumbing/object: add GetBlob/GetCommit/GetTag/GetTree.

1 files changed, 59 insertions, 0 deletions

diff --git a/utils/binary/write_test.go b/utils/binary/write_test.go
new file mode 100644
index 0000000..1380280
--- /dev/null
+++ b/utils/binary/write_test.go
@@ -0,0 +1,59 @@
+package binary
+
+import (
+	"bytes"
+	"encoding/binary"
+
+	. "gopkg.in/check.v1"
+)
+
+func (s *BinarySuite) TestWrite(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int64(42))
+	c.Assert(err, IsNil)
+	err = binary.Write(expected, binary.BigEndian, int32(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = Write(buf, int64(42), int32(42))
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}
+
+func (s *BinarySuite) TestWriteUint32(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int32(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = WriteUint32(buf, 42)
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}
+
+func (s *BinarySuite) TestWriteUint16(c *C) {
+	expected := bytes.NewBuffer(nil)
+	err := binary.Write(expected, binary.BigEndian, int16(42))
+	c.Assert(err, IsNil)
+
+	buf := bytes.NewBuffer(nil)
+	err = WriteUint16(buf, 42)
+	c.Assert(err, IsNil)
+	c.Assert(buf, DeepEquals, expected)
+}
+
+func (s *BinarySuite) TestWriteVariableWidthInt(c *C) {
+	buf := bytes.NewBuffer(nil)
+
+	err := WriteVariableWidthInt(buf, 366)
+	c.Assert(err, IsNil)
+	c.Assert(buf.Bytes(), DeepEquals, []byte{129, 110})
+}
+
+func (s *BinarySuite) TestWriteVariableWidthIntShort(c *C) {
+	buf := bytes.NewBuffer(nil)
+
+	err := WriteVariableWidthInt(buf, 19)
+	c.Assert(err, IsNil)
+	c.Assert(buf.Bytes(), DeepEquals, []byte{19})
+}