Example #1
0
// Make sure that the copier routine hashes the content when asked, and pulls
// if it fails to find the block.
func TestLastResortPulling(t *testing.T) {
	db, _ := leveldb.Open(storage.NewMemStorage(), nil)
	m := NewModel(defaultConfig, protocol.LocalDeviceID, "device", "syncthing", "dev", db)
	m.AddFolder(defaultFolderConfig)

	// Add a file to index (with the incorrect block representation, as content
	// doesn't actually match the block list)
	file := protocol.FileInfo{
		Name:     "empty",
		Flags:    0,
		Modified: 0,
		Blocks:   []protocol.BlockInfo{blocks[0]},
	}
	m.updateLocals("default", []protocol.FileInfo{file})

	// Pretend that we are handling a new file of the same content but
	// with a different name (causing to copy that particular block)
	file.Name = "newfile"

	iterFn := func(folder, file string, index int32) bool {
		return true
	}

	// Check that that particular block is there
	if !m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
		t.Error("Expected block not found")
	}

	p := rwFolder{
		folder:    "default",
		dir:       "testdata",
		model:     m,
		errors:    make(map[string]string),
		errorsMut: sync.NewMutex(),
	}

	copyChan := make(chan copyBlocksState)
	pullChan := make(chan pullBlockState, 1)
	finisherChan := make(chan *sharedPullerState, 1)

	// Run a single copier routine
	go p.copierRoutine(copyChan, pullChan, finisherChan)

	p.handleFile(file, copyChan, finisherChan)

	// Copier should hash empty file, realise that the region it has read
	// doesn't match the hash which was advertised by the block map, fix it
	// and ask to pull the block.
	<-pullChan

	// Verify that it did fix the incorrect hash.
	if m.finder.Iterate(folders, blocks[0].Hash, iterFn) {
		t.Error("Found unexpected block")
	}

	if !m.finder.Iterate(folders, scanner.SHA256OfNothing, iterFn) {
		t.Error("Expected block not found")
	}

	(<-finisherChan).fd.Close()
	os.Remove(filepath.Join("testdata", defTempNamer.TempName("newfile")))
}