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package librsync
import (
"bytes"
"fmt"
"github.com/kch42/golibrsync/librsync/testdata"
"io"
"os"
"testing"
)
func dump(r io.Reader) (string, error) {
path := fmt.Sprintf("%s%cgolibrsync_test", os.TempDir(), os.PathSeparator)
file, err := os.Create(path)
if err != nil {
return "", err
}
defer file.Close()
if _, err = io.Copy(file, r); err != nil {
return "", err
}
return path, nil
}
func TestSignatureDeltaPatch(t *testing.T) {
// Generate signature
orig := bytes.NewReader(testdata.RandomData())
sigbuf := new(bytes.Buffer)
siggen, err := NewDefaultSignatureGen(orig)
if err != nil {
t.Fatalf("could not create a signature generator: %s", err)
}
defer siggen.Close()
if _, err = io.Copy(sigbuf, siggen); err != nil {
t.Fatalf("Creating the signature failed: %s", err)
}
if !bytes.Equal(sigbuf.Bytes(), testdata.RandomDataSig()) {
if path, err := dump(sigbuf); err == nil {
t.Fatalf("Signatures do not match. Generated signature dumped to %s", path)
} else {
t.Fatalf("Signatures do not match. Could not dump signature: %s", err)
}
}
// Loading signature
sig, err := LoadSignature(sigbuf)
if err != nil {
t.Fatalf("Loading signature failed: %s", err)
}
defer sig.Close()
// Generate delta
mutation := bytes.NewReader(testdata.Mutation())
deltabuf := new(bytes.Buffer)
deltagen, err := NewDeltaGen(sig, mutation)
if err != nil {
t.Fatalf("could not create a delta generator: %s", err)
}
defer deltagen.Close()
if _, err = io.Copy(deltabuf, deltagen); err != nil {
t.Fatalf("Creating the delta failed: %s", err)
}
if !bytes.Equal(deltabuf.Bytes(), testdata.Delta()) {
if path, err := dump(deltabuf); err == nil {
t.Fatalf("deltas do not match. Generated delta dumped to %s", path)
} else {
t.Fatalf("deltas do not match. Could not dump delta: %s", err)
}
}
// TODO: Test patching
}
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