/
dummies.go
74 lines (59 loc) · 1.47 KB
/
dummies.go
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package internal
import (
"io"
"github.com/pkg/errors"
"gopkg.in/src-d/go-git.v4/plumbing"
"gopkg.in/src-d/go-git.v4/plumbing/object"
)
type dummyIO struct {
}
func (dummyIO) Read(p []byte) (int, error) {
return 0, io.EOF
}
func (dummyIO) Write(p []byte) (int, error) {
return len(p), nil
}
func (dummyIO) Close() error {
return nil
}
type dummyEncodedObject struct {
FakeHash plumbing.Hash
Fails bool
}
func (obj dummyEncodedObject) Hash() plumbing.Hash {
return obj.FakeHash
}
func (obj dummyEncodedObject) Type() plumbing.ObjectType {
return plumbing.BlobObject
}
func (obj dummyEncodedObject) SetType(plumbing.ObjectType) {
}
func (obj dummyEncodedObject) Size() int64 {
return 0
}
func (obj dummyEncodedObject) SetSize(int64) {
}
func (obj dummyEncodedObject) Reader() (io.ReadCloser, error) {
if !obj.Fails {
return dummyIO{}, nil
}
return nil, errors.New("dummy failure")
}
func (obj dummyEncodedObject) Writer() (io.WriteCloser, error) {
if !obj.Fails {
return dummyIO{}, nil
}
return nil, errors.New("dummy failure")
}
// CreateDummyBlob constructs a fake object.Blob with empty contents.
// Optionally returns an error if read or written.
func CreateDummyBlob(hash plumbing.Hash, fails ...bool) (*object.Blob, error) {
if len(fails) > 1 {
panic("invalid usage of CreateDummyBlob() - this is a bug")
}
var realFails bool
if len(fails) == 1 {
realFails = fails[0]
}
return object.DecodeBlob(dummyEncodedObject{FakeHash: hash, Fails: realFails})
}