package sideband import ( "bytes" "errors" "io" "testing" "github.com/go-git/go-git/v5/plumbing/format/pktline" . "gopkg.in/check.v1" ) func Test(t *testing.T) { TestingT(t) } type SidebandSuite struct{} var _ = Suite(&SidebandSuite{}) func (s *SidebandSuite) TestDecode(c *C) { expected := []byte("abcdefghijklmnopqrstuvwxyz") buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode(PackData.WithPayload(expected[0:8])) e.Encode(ProgressMessage.WithPayload([]byte{'F', 'O', 'O', '\n'})) e.Encode(PackData.WithPayload(expected[8:16])) e.Encode(PackData.WithPayload(expected[16:26])) content := make([]byte, 26) d := NewDemuxer(Sideband64k, buf) n, err := io.ReadFull(d, content) c.Assert(err, IsNil) c.Assert(n, Equals, 26) c.Assert(content, DeepEquals, expected) } func (s *SidebandSuite) TestDecodeMoreThanContain(c *C) { expected := []byte("abcdefghijklmnopqrstuvwxyz") buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode(PackData.WithPayload(expected)) content := make([]byte, 42) d := NewDemuxer(Sideband64k, buf) n, err := io.ReadFull(d, content) c.Assert(err, Equals, io.ErrUnexpectedEOF) c.Assert(n, Equals, 26) c.Assert(content[0:26], DeepEquals, expected) } func (s *SidebandSuite) TestDecodeWithError(c *C) { expected := []byte("abcdefghijklmnopqrstuvwxyz") buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode(PackData.WithPayload(expected[0:8])) e.Encode(ErrorMessage.WithPayload([]byte{'F', 'O', 'O', '\n'})) e.Encode(PackData.WithPayload(expected[8:16])) e.Encode(PackData.WithPayload(expected[16:26])) content := make([]byte, 26) d := NewDemuxer(Sideband64k, buf) n, err := io.ReadFull(d, content) c.Assert(err, ErrorMatches, "unexpected error: FOO\n") c.Assert(n, Equals, 8) c.Assert(content[0:8], DeepEquals, expected[0:8]) } type mockReader struct{} func (r *mockReader) Read([]byte) (int, error) { return 0, errors.New("foo") } func (s *SidebandSuite) TestDecodeFromFailingReader(c *C) { content := make([]byte, 26) d := NewDemuxer(Sideband64k, &mockReader{}) n, err := io.ReadFull(d, content) c.Assert(err, ErrorMatches, "foo") c.Assert(n, Equals, 0) } func (s *SidebandSuite) TestDecodeWithProgress(c *C) { expected := []byte("abcdefghijklmnopqrstuvwxyz") input := bytes.NewBuffer(nil) e := pktline.NewEncoder(input) e.Encode(PackData.WithPayload(expected[0:8])) e.Encode(ProgressMessage.WithPayload([]byte{'F', 'O', 'O', '\n'})) e.Encode(PackData.WithPayload(expected[8:16])) e.Encode(PackData.WithPayload(expected[16:26])) output := bytes.NewBuffer(nil) content := make([]byte, 26) d := NewDemuxer(Sideband64k, input) d.Progress = output n, err := io.ReadFull(d, content) c.Assert(err, IsNil) c.Assert(n, Equals, 26) c.Assert(content, DeepEquals, expected) progress, err := io.ReadAll(output) c.Assert(err, IsNil) c.Assert(progress, DeepEquals, []byte{'F', 'O', 'O', '\n'}) } func (s *SidebandSuite) TestDecodeWithUnknownChannel(c *C) { buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode([]byte{'4', 'F', 'O', 'O', '\n'}) content := make([]byte, 26) d := NewDemuxer(Sideband64k, buf) n, err := io.ReadFull(d, content) c.Assert(err, ErrorMatches, "unknown channel 4FOO\n") c.Assert(n, Equals, 0) } func (s *SidebandSuite) TestDecodeWithPending(c *C) { expected := []byte("abcdefghijklmnopqrstuvwxyz") buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode(PackData.WithPayload(expected[0:8])) e.Encode(PackData.WithPayload(expected[8:16])) e.Encode(PackData.WithPayload(expected[16:26])) content := make([]byte, 13) d := NewDemuxer(Sideband64k, buf) n, err := io.ReadFull(d, content) c.Assert(err, IsNil) c.Assert(n, Equals, 13) c.Assert(content, DeepEquals, expected[0:13]) n, err = d.Read(content) c.Assert(err, IsNil) c.Assert(n, Equals, 13) c.Assert(content, DeepEquals, expected[13:26]) } func (s *SidebandSuite) TestDecodeErrMaxPacked(c *C) { buf := bytes.NewBuffer(nil) e := pktline.NewEncoder(buf) e.Encode(PackData.WithPayload(bytes.Repeat([]byte{'0'}, MaxPackedSize+1))) content := make([]byte, 13) d := NewDemuxer(Sideband, buf) n, err := io.ReadFull(d, content) c.Assert(err, Equals, ErrMaxPackedExceeded) c.Assert(n, Equals, 0) }