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package plumbing
import (
"io"
"io/ioutil"
. "gopkg.in/check.v1"
)
type MemoryObjectSuite struct{}
var _ = Suite(&MemoryObjectSuite{})
func (s *MemoryObjectSuite) TestHash(c *C) {
o := &MemoryObject{}
o.SetType(BlobObject)
o.SetSize(14)
_, err := o.Write([]byte("Hello, World!\n"))
c.Assert(err, IsNil)
c.Assert(o.Hash().String(), Equals, "8ab686eafeb1f44702738c8b0f24f2567c36da6d")
o.SetType(CommitObject)
c.Assert(o.Hash().String(), Equals, "8ab686eafeb1f44702738c8b0f24f2567c36da6d")
}
func (s *MemoryObjectSuite) TestHashNotFilled(c *C) {
o := &MemoryObject{}
o.SetType(BlobObject)
o.SetSize(14)
c.Assert(o.Hash(), Equals, ZeroHash)
}
func (s *MemoryObjectSuite) TestType(c *C) {
o := &MemoryObject{}
o.SetType(BlobObject)
c.Assert(o.Type(), Equals, BlobObject)
}
func (s *MemoryObjectSuite) TestSize(c *C) {
o := &MemoryObject{}
o.SetSize(42)
c.Assert(o.Size(), Equals, int64(42))
}
func (s *MemoryObjectSuite) TestReader(c *C) {
o := &MemoryObject{cont: []byte("foo")}
reader, err := o.Reader()
c.Assert(err, IsNil)
defer func() { c.Assert(reader.Close(), IsNil) }()
b, err := ioutil.ReadAll(reader)
c.Assert(err, IsNil)
c.Assert(b, DeepEquals, []byte("foo"))
}
func (s *MemoryObjectSuite) TestSeekableReader(c *C) {
const pageSize = 4096
const payload = "foo"
content := make([]byte, pageSize+len(payload))
copy(content[pageSize:], []byte(payload))
o := &MemoryObject{cont: content}
reader, err := o.Reader()
c.Assert(err, IsNil)
defer func() { c.Assert(reader.Close(), IsNil) }()
rs, ok := reader.(io.ReadSeeker)
c.Assert(ok, Equals, true)
_, err = rs.Seek(pageSize, io.SeekStart)
c.Assert(err, IsNil)
b, err := ioutil.ReadAll(rs)
c.Assert(err, IsNil)
c.Assert(b, DeepEquals, []byte(payload))
// Check that our Reader isn't also accidentally writable
_, ok = reader.(io.WriteSeeker)
c.Assert(ok, Equals, false)
}
func (s *MemoryObjectSuite) TestWriter(c *C) {
o := &MemoryObject{}
writer, err := o.Writer()
c.Assert(err, IsNil)
defer func() { c.Assert(writer.Close(), IsNil) }()
n, err := writer.Write([]byte("foo"))
c.Assert(err, IsNil)
c.Assert(n, Equals, 3)
c.Assert(o.cont, DeepEquals, []byte("foo"))
}
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